ES2368392B1 - AUTOMATIC DEVICE AND PROCEDURE FOR THE DETECTION AND QUANTIFICATION OF TERMS FROM THE CH4 THAT IS ISSUED. - Google Patents

Abstract

Automatic device and procedure for the detection and quantification of termites from the CH {sub, 4} they emit. # Includes a CH sensor {sub, 4} (10), a temperature sensor (11) and a microprocessor (2 ), which measures the concentration of CH {sub, 4} emitted by termites and room temperature, and stores tables, obtained experimentally, by which it is established from two consecutive values of the concentration of CH {sub, 4 } and the temperature measured, the number of termites, the species of termite and the amount of cellulose consumed by the termites at the time of the second value. The microprocessor (2) compares successive values of CH {sub, 4} and the temperature measured, and determines whether the number of termites and the amount of cellulose consumed increases or decreases and provides their rate of increase or decrease.

Description

Automatic device and procedure for the detection and quantification of termites from the CH4 they emit. Object of the invention

The invention aims to carry out the detection of termites from the measurement of CH4 that they produce in their digestive tract during the breakage of cellulose by symbiotic microorganisms and that evacuate to the environment where they inhabit (wood and derived materials, underground and within tunnels that build). In addition to the detection of termites, the invention automatically quantifies the number of termites present in the medium over time.

Since the emissions of CH4 that termites produce vary mainly with temperature, the measurement of CH4 must be complemented with the measurement of ambient temperature.

It is also the object of the invention to determine the biomass consumed by termites from CH4 and the measured temperature. This determination allows to evaluate the severity of the attack that the termites are carrying out.

It is another object of the invention to provide the device with a configuration that allows it to be inserted in the medium where it is required to verify the presence of termites; and, where appropriate, the quantification and registration over time of both the number of termites and their variation, as well as the biomass they consume. Background of the invention

In the state of the art, the use of apparatus and procedures for the detection of xylophagous insects is known, as is the case of the Spanish Invention Patent with application number 200701318, in which this detection is carried out by means of a sensor based in the emission of light and capture of the reflected light, since said reflected light varies when it hits an insect.

It is also possible to mention the Spanish invention patent with application number P 201130808 that has not been published at the time of the application for the invention and which belongs to the same owner as the present invention, in which a device and method is described that allow automatically and without human intervention during the inspection process, the detection of termites based on the measurement of the concentration of CO2 that they generate in the environment where they live. It also allows you to automatically monitor, without human intervention once installed, the presence of termites in the environment where they live for long periods of time in a reliable way and without disturbing them. It also allows quantifying the number of existing termites or their rate of variation over time, and therefore the danger of their attack, based on said measurement of the concentration of CO2 of thermal origin. Finally, it is possible to determine the effectiveness of an antitermitic treatment based on said measurement of the concentration of CO2 of thermal origin.

The device and procedure of the previous document do not allow to evaluate the amount of biomass consumed by the termites that represents the scope of the attack that they are carrying out, which the invention carries out by measuring the concentration of CH4 that they generate in the environment where they live (wood and derived materials, underground and inside tunnels they build) and by measuring the ambient temperature in that environment. In addition, the emission of CH4 is specific to termites, while other xylophage agents also emit CO2 (woodworm, thick woodworm, rot fungi). Therefore, the detection and quantification of termites is more precise in the present invention than in the device and method of the previous document, based on the concentration of the CO2 of thermal origin.

The present invention, like the previous document, also allows for automatic monitoring, without human intervention once the device is installed, the presence of termites in the environment where they live for long periods of time in a reliable manner and without disturbing them. It also allows quantifying the number of existing termites or their rate of variation over time, and therefore the danger of their attack, all from this measure of the concentration of CH4 of thermal origin and the ambient temperature. Finally, it allows to determine the effectiveness of an antitermitic treatment based on said measurement of the concentration of CH4 of thermal origin and the ambient temperature where they live.

In the state of the art the detection of termites by means of the detection of methane is carried out with trained dogs, which detect the presence of methane and there is no known device that allows the detection of termites from the detection of the methane they generate. Description of the invention

In order to achieve the objectives and solve the aforementioned drawbacks, the invention has developed a new automatic device for the detection and quantification of termites from the measurement of CH4 they emit. CH4 is produced in the digestive tract of termites during cellulose rupture by symbiotic microorganisms. The CH4 produced is expelled abroad and its emission varies considerably with temperature. By measuring the concentration of CH4 and the ambient temperature it is possible to determine the amount of termites.

There is also the circumstance that there is a correlation between the bioconversion of cellulose to CH4, so that from the measurement of the concentration of CH4 and the measured temperature it is also possible to determine the amount of cellulose or wood consumed by termites . The invention employs a microprocessor that converts the CH4 readings and the measured temperature at all times into the amount of cellulose or wood consumed by the termites, which is very important in order to assess the severity of an attack on structural elements of wood and derivatives.

For this, the device of the invention is housed in a medium where the detection and quantification of termites is required and is characterized in that it comprises a CH4 sensor and an ambient temperature sensor, which are connected to a microprocessor that is configured to such that it measures the concentration of CH4 emitted by termites, as well as the ambient temperature. In addition, the microprocessor stores tables, obtained experimentally, that relate the concentration of CH4 and the ambient temperature, with the number of termites and with the amount of cellulose consumed by the termites. In addition, by means of the tables, from a first measurement of CH4 and the ambient temperature, as well as from a second measurement of CH4 and the ambient temperature, carried out after a period of time from said first measurement; an equivalence is established between said second measure of CH4 and the ambient temperature with the number of termites present at that time in said medium, as well as the amount of cellulose consumed.

In addition, the microprocessor is configured in such a way that it stores the concentration of CH4 and the measured temperature and the equivalent of the number of termites present, as well as the amount of cellulose consumed, carrying out this storage in previously established periods of time. It is also con fi gured in such a way that it compares the different measurements made, so that it determines the evolution of the number of termites and the amount of cellulose consumed in the medium where the device of the invention is installed. Thus, it can be known if over time the population of termites and cellulose consumption increases or decreases, and their corresponding rates of increase or decrease.

Also, the microprocessor stores a threshold of a previously established number of termites, above which it generates an alarm.

The microprocessor is equipped with wireless communication means with a remote center to send the information obtained in the device of each measurement made.

Consequently, both the evolution of the number of termites and cellulose consumed, and the possible alarms can be transmitted to the remote center, so that this data can be known remotely and without the need for an operator to travel to the place where it is located installed the device of the invention. Accordingly, the invention detects wood degradation by termites early and automatically.

The invention can also be used to establish the effectiveness of anti-thermitic treatments, which are normally applied by cellulose baits impregnated with anti-thermitic substances (as inhibitors of chitin synthesis). Inserting the device of the invention in furniture, floors, walls or ceilings of wood or derived materials (boards, glued laminated wood, etc.) of homes or buildings where antitermitic treatments are applied, or inserting it in the cebaderos (which are usually closed boxes ) or by placing it directly within them, the effectiveness of the treatment over time can be determined; since the invention determines the number of termites still surviving at all times in the furniture, floor, wall, ceiling or bait and allows estimating how long it will take until its complete disappearance. This time estimate is made by comparing successive values of the number of termites and the amount of cellulose consumed, a procedure that allows determining the rate of decrease in the number of termites and the cellulose consumed. All of this is carried out without opening the baits or disturbing the termites; In addition, these data can be known in a remote center, with the advantages that this entails, as already described above.

In one embodiment of the invention it is envisioned that the invention comprises a termite bait, for example, a cellulose bait impregnated with antitermitic substances (as inhibitors of chitin synthesis), so that the device itself also acts as a bait, everything said in the previous paragraph is applicable on the determination of the effectiveness of the antitermitic treatment.

In the preferred embodiment of the invention, the device comprises a housing inside which the microprocessor and the corresponding power supply are housed, so that the housing is attached to a tubular body that is open at its end to allow the entry of termites, and inside which the CH4 sensor, the temperature sensor and the bait are located. The tubular body also has a configuration planned to be inserted in the environment where it is required to verify the presence and evolution of termites, such as wood and derived materials, underground and inside tunnels built by these insects. The union of the housing to the tubular body is through a joint that prevents the exchange of gases between the medium and the outside.

Furthermore, the invention relates to a process in which once the device is housed in the middle, its housing and its O-ring prevent the exchange of gases between the medium and the outside. Then, the CH4 sensor and the temperature sensor take a first initial measurement of the concentration of this gas and the ambient temperature, which the microprocessor stores, and after a con fi gurable time T, take a second measurement of the concentration of CH4 and the ambient temperature, which it also stores so that from both measurements it calculates the number of termites existing at once, and the amount of cellulose consumed, by means of the table already commented on the device. Thereafter, the device records and compares consecutive values of CH4 and ambient temperature measured, spaced a time T. Any significant variation of the concentration of CH4 within the medium must be caused by termites, since the emission of CH4 is specific to the Termites In addition, since they are social insects, their total CH4 emission is significant and detectable.

The procedure provides for the generation of an alarm when the number of termites exceeds a previously established threshold.

According to the description of the device, the procedure also comprises communicating to a remote center the information selected between the concentration of CH4 obtained in each measurement, the measured temperature, the equivalent of the number of termites detected, the amount of cellulose consumed, the comparison of the different measures carried out, an alarm generated and any combination of the previous ones.

Next, in order to facilitate a better understanding of this descriptive report and forming an integral part thereof, a series of fi gures are attached in which the object of the invention has been represented by way of illustration and not limitation. Brief statement of the figures

Figure 1.- Shows a perspective view of the device of the invention applied on a piece of wood, such as a beam, a floor, a door, furniture, etc.

Figure 2.- Shows a sectional view of the device of the previous figure, in which it is found with the housing cover removed. Description of the preferred embodiment

A description of the invention based on the aforementioned figures is made below.

As already mentioned, in the digestive tract of termites methane (CH4) is produced during the breakage of cellulose by symbiotic microorganisms. Therefore, there is a circumstance that termites expel CH4 outside, and consequently by measuring the concentration of CH4, the amount of termites can be determined.

In addition, CH4 emissions from termites vary considerably with temperature. For example, a rise of 5 ° C can cause a rise of CH4 of 30% for the most common species in Europe (Reticulitermes lucifugus). Therefore, the ambient temperature must be measured to accurately obtain the number of termites from the CH4 they emit.

There is also the circumstance that there is a correlation between the bioconversion of cellulose to CH4, so that from the measurement of the concentration of CH4 it is possible to determine the amount of cellulose or wood consumed by termites.

Therefore, the device of the invention comprises a housing 1 in which a control electronics of the conventional type based on a microprocessor 2 and a power supply 3 are housed, so that the housing 1 is connected to a tubular body 4 by means of a O-ring 5 and a bast press 6, to allow inside a CH4 sensor 10 and an ambient temperature sensor 11, so that they are connected to the microprocessor 2. The tubular body 4 is open at its end to allow termite entry inside, and is also configured to allow insertion into a medium 7 in which termites conventionally inhabit, such as wood 7. Once the device is housed in the middle 7, its housing 1 and its O-ring 5 prevent the exchange of gases between the medium and the outside.

The tubular body 4 has a cylindrical configuration to facilitate its insertion in the wood 7.

The microprocessor 2 is configured so that it measures the concentration of CH4 emitted by the termites that inhabit the wood 7, as well as the ambient temperature, from the signals provided by the respective sensors 10, and 11. This calculated measure of CH4 corresponds to the concentration of CH4 accumulated after a certain time from the moment the device is housed in wood 7.

In addition, the microprocessor 2 stores tables, previously obtained experimentally, by means of which it is established, from two consecutive values of the concentration of CH4 and the measured ambient temperature, corresponding to the instants t and t + T (where T is a settable time), the number of termites present at time t + T and the amount of cellulose consumed. Therefore, an equivalence is established between CH4, the ambient temperature measured at a given time, with the number of termites that currently inhabit the tubular body 4 and with the amount of cellulose consumed. That is, concentration margins of CH4 are established as a function of temperature, each of which corresponds to a number of termites and a quantity of cellulose consumed, so that from the concentration of CH4 and the temperature measured, The microprocessor 2 obtains the number of termites present in the wood 7 where the device has been installed, as well as the amount of cellulose consumed. Comparing over time this number of termites, microprocessor 2 calculates the rate of increase or decrease of the population of said termites, as well as the rate of cellulose consumed.

In addition, the microprocessor 2 is provided with a display screen (not shown in the figures) in which the different values of the concentration of CH4, room temperature, the number of termites and the amount of cellulose consumed set out in the table are shown, as well as the different operating data of the device.

The microprocessor 2 is provided with wireless communication means with a remote center to send the information, both of the concentration of CH4, measured ambient temperature, as well as the number of termites detected and the rate of variation of this number along the time, and the amount of cellulose consumed, for which said microprocessor 2 is connected to the corresponding antenna 9.

In addition, the microprocessor 2 is configured to store the concentration of CH4, the measured ambient temperature, the amount of cellulose consumed and the equivalent of the number of termites, of the different measurements performed, so that the programming of the microprocessor 2 establishes that said measurements are carry out in previously fixed periods of time, and also makes the comparison of the different measures carried out to establish the evolution of the amount of cellulose consumed and the number of termites generated by the CH4 and the ambient temperature measured.

On the other hand, the microprocessor 2 stores a threshold of a number of previously established termites, above which it generates an alarm, which emits locally and also sends to the remote center, where it is conveniently signaled. Accordingly, the invention detects wood degradation by termites early and automatically.

The con fi guration described has the great advantage of allowing to study in laboratory conditions how many termites survive at all times in a colony without disturbing it, which is very important for wood protection tests, such as those dictated by UNE 56.411-EN standards. 118 (Determination of preventive efficacy against Reticulitermes Santonensis de Feytaud termites), UNE EN 118 (Determination of preventive effectiveness against Reticulitermes species (European termites)) and UNE EN 117 (Determination of the effectiveness threshold against Reticulitermes species ( European termites)). This monitoring of the termite population is also very useful for termite farms for fish farms and bioenergy.

If the wood 7 is being subjected to an antitermitic treatment, which is usually done by cellulose baits impregnated with antitermitic substances (such as inhibitors of chitin synthesis), with the device of the invention the effectiveness of the antitermitic treatment can be determined; that is, if the number of termites inside wood 7 and the amount of cellulose consumed decreases or not, and at what rate it does. For example, when the number of termites and the amount of cellulose consumed obtained from the calculated CH4 concentration are null for several consecutive periods of time, the device will warn that there is no longer any thermic activity (the treatment has been effective and may be terminated). If, for example, the number of termites and the amount of cellulose consumed decrease over time, the device will warn that the thermal activity is decreasing (the treatment is being effective but has not yet been completed). Finally, if the number of termites and the amount of cellulose consumed increase over time, the device will warn that the thermic activity increases (the treatment is not effective). Finally, if the number of termites and the cellulose consumed are kept constant, the device will warn that the thermal activity is maintained (the treatment is not effective). Thus, with the results obtained it can be known if the treatment is being effective without displacing any technician to verify it; and in addition the device allows to obtain an estimate of how much time will pass until the complete eradication of the termites, since it provides the rate of decrease of the number of termites and the cellulose consumed. All this is carried out without opening the baits or disturbing the termites. All of the above is equally valid if the device of the invention is inserted into wooden floors, walls or ceilings or derived materials (boards, glued laminated wood, etc.) of homes or buildings subjected to antitermitic treatments, or if it is inserted into cebaderos (which are usually closed boxes) or placed directly inside them.

In addition, the device of the invention provides that a bait 8 is included inside the tubular body 4, for example a cellulose bait impregnated with antitermitic substances (such as chitin synthesis inhibitors), so that the device itself also acts as a bait, everything said in the previous paragraph on the determination of the efficacy of antitermitic treatment is applicable.

The invention also refers to a process whose execution is derived from the described operation of the device, and whose phases were described in the description section of the invention.

Claims (12)

1. Automatic device for the detection and quantification of termites from the CH4 they emit, which is housed in a medium (7) in which the detection and quantification of termites is required; characterized in that it comprises:

-

a CH4 sensor (10),

-

an ambient temperature sensor (11),

-

a microprocessor (2) that is connected to the CH4 sensor (10) and the ambient temperature sensor (11);

the microprocessor being configured in such a way that it measures the concentration of the CH4 emitted by the termites and the ambient temperature, and in which tables are stored, obtained experimentally that relate the concentration of CH4 and the temperature measured with the number of termites and with the amount of cellulose consumed by termites, and by which it is determined, from a first measurement of CH4 and ambient temperature, as well as a second measurement of CH4 and the ambient temperature made after a period of time since said first measure, an equivalence between said second measure of CH4 and the ambient temperature with the number of termites present at that time in said medium (7), as well as with the amount of cellulose consumed.

2.

Automatic device for the detection and quantification of termites from the CH4 they emit, according to claim 1, characterized in that the microprocessor (2) is configured such that it stores the concentration of the measured CH4 and temperature and the equivalent of the number of termites and the amount of cellulose consumed from different measurements performed in previously established periods of time; and it is also set up in such a way that it compares the different measures performed, to determine the evolution of the number of termites in the medium (7) and the amount of cellulose consumed.

3.

Automatic device for the detection and quantification of termites from the CH4 they emit, according to claim 1, characterized in that the microprocessor (2) stores a threshold of a number of termites, previously established, above which it generates an alarm.

Four.

Automatic device for the detection and quantification of termites from CH4 emitting, according to claims 1, 2 or 3, characterized in that the microprocessor (2) comprises wireless communication means with a remote center to send the selected information between the concentration of the CH4 and the ambient temperature obtained in each measurement, the equivalent of the number of termites detected, the amount of cellulose consumed, the comparison of the different measurements performed, an alarm generated and any combination of the above.

5.

Automatic device for the detection and quantification of termites from the CH4 they emit, according to claim 1, characterized in that it is applied to furniture, floors, ceilings and walls of a material selected from wood and its derivative materials where antitermitic treatments are applied; also applied in the antitermitic baits to determine the effectiveness of a treatment at

over time

6.

Automatic device for the detection and quantification of termites from the CH4 they emit, according to claim 1, characterized in that it comprises a bait (8) that is impregnated with a pesticide.

7.

Automatic device for the detection and quantification of termites from the CH4 they emit, according to any one of the preceding claims, characterized in that it comprises a housing

(1) inside which the microprocessor (2), the corresponding power supply (3) is housed; said housing (1) being attached to a tubular body (4), open at its end to allow termite entry; inside which is located the CH4 sensor (10), the ambient temperature sensor (11), and the bait (8); and which also has a configuration planned to be inserted in the medium (7); and realizing the union of the casing (1) to the tubular body by means of a joint (5) that prevents the exchange of gases between the medium (7) and the outside. 8. Procedure for the detection and quantification of termites from the CH4 they emit, characterized in that it comprises the following phases:

-

make a first measurement of CH4 and room temperature, in a medium (7) where it is desired to perform the detection and quantification of termites,

-

Perform a second measurement of CH4 and room temperature after a period of time since the first measurement was taken,

-

determine the number of termites present and the cellulose consumed in the medium (7), from the first and second measurement of CH4 and the ambient temperature, by means of tables, obtained experimentally, that establish an equivalence between the first and second measurement CH4 and the temperature with the number of termites and with the amount of cellulose consumed, at the time of making the second measurement of CH4 and the ambient temperature in said medium (7).

9. Method for the detection and quantification of termites from the CH4 they emit, according to claim 8, characterized in that it further comprises:

-

perform a plurality of measurements of CH4 and ambient temperature spaced a time T, and

-

record and compare consecutive values of CH4 and the ambient temperature measured, as well as the values of termites obtained and the amount of cellulose consumed, detecting and quantifying said number of termites and the amount of cellulose consumed.

10.

Procedure for the detection and quantification of termites from the CH4 they emit, according to claim 8, characterized in that it comprises generating an alarm when the number of termites exceeds a previously established threshold.

eleven.

Procedure for the detection and quantification of termites from the CH4 emitted according to claims 8 or 9, characterized in that it comprises communicating to a remote center the information

selected between the concentration of CH4 and the cellulose temperature consumed, the comparison of the different ambient temperature obtained in each measurement, the equi - ments carried out, an alarm generated and any value of the number of termites detected, the amount of any combination of the previous ones . SPANISH OFFICE OF THE PATENTS AND BRAND Application no .: 201131283 SPAIN Date of submission of the application: 27.07.2011 Priority Date: REPORT ON THE STATE OF THE TECHNIQUE 51 Int. Cl.: A01M1 / 00 (2006.01) RELEVANT DOCUMENTS

Category

Documents cited Claims Affected

X

US 6150944 A (RELATIVE SOLUCIONS CORPORATION, METAIRIE) 21.11.2000 1-5

Y

6-11

Y

ES 2324445 B1 (AIDIMA) 05.05.2010 6-11

TO

ES 2275432 B1 (TERMITANIA) 16.03.2008 1-11

TO

US 6374536 B1 (LAWRENCE WASHBURN et al.) 04/23/2002 1-11

TO

ES 2265111 T3 (ECOLAB) 01.02.2007 1-11

TO

Biological energy production from biomass by wood-feeding termites (Dr. JIANZHONG SUN et al.) 30.07. 2008 1-11

TO

Green house gas emissions from termite ecosystem (GOMATI VELU et al.) 02.02.2011 1-11

Category of the documents cited X: of particular relevance Y: of particular relevance combined with other / s of the same category A: reflects the state of the art O: refers to unwritten disclosure P: published between the priority date and the date of priority submission of the application E: previous document, but published after the date of submission of the application

This report has been prepared • for all claims • for claims no:

Date of realization of the report 26.10.2011

Examiner G. Foncillas Garrido Page 1/4

REPORT OF THE STATE OF THE TECHNIQUE Application number: 201131283 Minimum documentation sought (classification system followed by classification symbols) A01M Electronic databases consulted during the search (name of the database and, if possible, terms of search used) INVENES, EPODOC State of the Art Report Page 2/4  WRITTEN OPINION Application number: 201131283 Date of Completion of Written Opinion: 10.26.2011 Statement

Novelty (Art. 6.1 LP 11/1986)

Claims Claims 1-11 IF NOT

Inventive activity (Art. 8.1 LP11 / 1986)

Claims Claims 1-11 IF NOT

The application is considered to comply with the industrial application requirement. This requirement was evaluated during the formal and technical examination phase of the application (Article 31.2 Law 11/1986).  Opinion Base.- This opinion has been made on the basis of the patent application as published. State of the Art Report Page 3/4  WRITTEN OPINION Application number: 201131283 1. Documents considered.- The documents belonging to the state of the art taken into consideration for the realization of this opinion are listed below.

Document

Publication or Identification Number publication date

D01

US 6150944 A (RELATIVE SOLUCIONS CORPORATION, METAIRIE) 21.11.2000

D02

ES 2324445 B1 (AIDIMA) 05.05.2010

2. Statement motivated according to articles 29.6 and 29.7 of the Regulations for the execution of Law 11/1986, of March 20, on Patents on novelty and inventive activity; quotes and explanations in support of this statement Claim 1 The document closest to the object of the invention is D01; It presents a device for the detection and warning of the existence of termites through sensors; which indicate the existence or increase of gases produced by termites or of variations in the temperature of the analyzed area. The system (column 2, line 50-column 5, line 55) comprises a gas sensor (200) and a temperature sensor (270) (Figure 1, 3a and 3b) connected to a processor (300) that analyzes the information received by said sensors. The processor (300) comprises (column 3, line 44-column 4, line 13) a computer for processing the information received and also incorporates a remote communications system between said sensor (200) and the processor (300) The difference with the object of the request focuses on the comparison of the data obtained from different samples, with tables obtained experimentally and thus be able to calculate the number of termites present at that time in said medium, However, such consideration does not establish any contribution. Differences are established regarding the design of the system, not establishing these characteristics, technical considerations that allow the solution to a technical problem. It is considered well known as it is shown in the report on the state of the art, gases produced by insects, in particular, by termites, such as carbon dioxide or methane, as well as sensors that detect these gases. Therefore, said claim is new (Article 6 LP) but lacks inventive activity (Article 8 LP). Claims 2-5 In D01, the use of a warning system (400) is indicated (column 3, line 7-column 3, line 20), which is activated when preset gas levels are detected. The use of wireless communications between sensors and a remote center is considered common knowledge, not establishing in any way contribution to the state of the art at hand. Therefore, said claim is new (Article 6 LP) but lack inventive activity (Article 8 LP). Claims 6-7 In D02 (Figure 2), the use of a bait (12) to attract insects into a housing is indicated. On the other hand, a housing (8) is also established, which is sealed so that a hermetic seal of such that the passage of air into said housing is prevented. Finally, an access (14) is included that allows the access of insects to its interior where the sensor and the sensor are located. bait. It would be obvious to a person skilled in the art, the combination of D01 and D02 based on obtaining the object of the present application. Said claim is new (Article 6 LP) but lacks inventive activity (Article 8 LP). Claims 8-11 Based on what is stated in previous claims, and taking into account documents D01 and D02, the Claims 8 to 11 are new (Article 6 LP) but lack inventive activity (Article 8 LP). State of the Art Report Page 4/4