EP1420841A2 - Dispositifs utilitaires a memoire - Google Patents

Dispositifs utilitaires a memoire

Info

Publication number
EP1420841A2
EP1420841A2 EP02755265A EP02755265A EP1420841A2 EP 1420841 A2 EP1420841 A2 EP 1420841A2 EP 02755265 A EP02755265 A EP 02755265A EP 02755265 A EP02755265 A EP 02755265A EP 1420841 A2 EP1420841 A2 EP 1420841A2
Authority
EP
European Patent Office
Prior art keywords
circuitry
memory
electronic
product
inhaler
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP02755265A
Other languages
German (de)
English (en)
Inventor
Michael Hennessy Sullivan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ROSTI AS
Original Assignee
ROSTI AS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GB0121147A external-priority patent/GB0121147D0/en
Priority claimed from GB0125654A external-priority patent/GB0125654D0/en
Application filed by ROSTI AS filed Critical ROSTI AS
Publication of EP1420841A2 publication Critical patent/EP1420841A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M15/00—Inhalators
    • A61M15/0065—Inhalators with dosage or measuring devices
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M15/00—Inhalators
    • A61M15/0065—Inhalators with dosage or measuring devices
    • A61M15/0068—Indicating or counting the number of dispensed doses or of remaining doses
    • A61M15/008—Electronic counters
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M15/00—Inhalators
    • A61M15/009—Inhalators using medicine packages with incorporated spraying means, e.g. aerosol cans
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/35—Communication
    • A61M2205/3546—Range
    • A61M2205/3561—Range local, e.g. within room or hospital
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/35—Communication
    • A61M2205/3576—Communication with non implanted data transmission devices, e.g. using external transmitter or receiver
    • A61M2205/3592—Communication with non implanted data transmission devices, e.g. using external transmitter or receiver using telemetric means, e.g. radio or optical transmission
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/50—General characteristics of the apparatus with microprocessors or computers
    • A61M2205/52—General characteristics of the apparatus with microprocessors or computers with memories providing a history of measured variating parameters of apparatus or patient
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/82—Internal energy supply devices
    • A61M2205/8237—Charging means
    • A61M2205/8243—Charging means by induction
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/82—Internal energy supply devices
    • A61M2205/8293—Solar
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2209/00—Ancillary equipment
    • A61M2209/08—Supports for equipment
    • A61M2209/084—Supporting bases, stands for equipment
    • A61M2209/086—Docking stations

Definitions

  • This invention relates to utilitarian devices in which information can be stored, and in which such information can be varied. It has application in storing medical dosages where the use or consumption of those dosages must be monitored. A particular application is in inhalers whose overuse can be damaging to the user's health.
  • a utilitarian device comprises a body having incorporated therein electronic circuitry and a power storage component therefor.
  • the circuitry includes an electronic memory, and means are provided for adding information to the memory as the product is used. These means would normally deliver an electronic signal to the circuitry which is recorded in the memory, and the device may include a mechanism for generating such an electrical signal in response to use of the product.
  • the mechanism is typically a piezoelectric device or a microswitch, and may be operated manually by a user each time the device is used. Alternatively, the mechanism can be installed in the device in such a manner that it is activated automatically when the device is used.
  • a piezoelectric crystal or a proximity detector for example, disposed behind a membrane at a surface of the body, can be very sensitive to changes at the surface.
  • a piezoelectric crystal or a proximity detector for example, disposed behind a membrane at a surface of the body, can be very sensitive to changes at the surface.
  • a device Located in the wall of a duct, such a device can monitor the passage of material along the duct, while itself being fully protected.
  • the power storage component in a product of the invention is typically a rechargeable battery or capacitor. Recharging can be conducted via external connectors, but it is preferred to include in the device an induction generator for sustaining the power storage component for the circuitry, the generator having elements movable relative to one another such that movement of the container provokes such relative movement. Solar cells can also be used.
  • the electronic memory can be used to retain a wide range of information relating to use of the device. Where the device is a container, basic information would of course be the amount of product remaining in the container, but it can also keep a record of the number of times it has been used, when it was last used, and when it should next be used. This is particularly valuable when medicine is required to be taken at regular intervals or according to a predetermined timetable.
  • the memory can provide an indication of whether the user has adhered to such a predetermined timetable.
  • a visual display coupled to the electronic circuitry can be provided on the container to show some or all of this kind of information.
  • the container can though, include means for coupling the circuitry to a separate unit through a docking station in which information stored in the memory can be received, analysed or displayed. In this way, access to information in the memory can be controlled or restricted.
  • Devices of the invention can be designed simultaneously with a stand or docking station to which they can be connected for the transfer of data, to and from the device and/or the transfer of power to the device or a battery therein. This can be particularly valuable when a device is to be re-used. It can be installed on a stand or docking station, stripped of data, and reloaded with new data for an entirely different regime. The removed data can of course be retained, in the base or other equipment connected thereto for storage and/or analysis.
  • the base or docking station can be designed with a mechanism that is uniquely able to activate the circuitry in the device to release data stored and accumulated therein for transfer to external equipment. Stands for the end users of devices according to the invention would of course only perform some of these functions.
  • the device can include a visual display which can show some or all of the information in the memory and typically, such a display will comprise an electroluminescent material disposed behind a window in a wall of the housing. Access can also be had to information in the memory through an infrared or radio frequency window in the wall of the container, and such a window can also be used to deliver data and/or power to the circuitry and/or storage component.
  • the circuitry and more particularly the memory can be programmed with information relating to the use of the medicinal product. Such information can be used to protect against over-use of the device. For example, it can generate a warning signal if the container is sought to be used too soon after a previous use.
  • the invention can readily be applied to a dispensing device in which a mechanism is included for generating a signal each time product is removed. The mechanism then transmits that signal to the memory where that piece of data is retained.
  • This aspect of the invention can be embodied in an inhaler in which a dosage is taken when required, rather than at regular intervals. In such a device it is important not only to know how many dosages have been used, and how many remain, but also how long it is since a supply of inhalant was first accessed.
  • memory can store information relating to the first use and, as appropriate, the time at which each subsequent dosage was taken. In this way, means are provided for at least putting an operator on notice if the device is being over-used.
  • the sensing mechanism is fitted in the inhaler mouthpiece to sense the passage of inhalant therethrough.
  • the mechanism might be a pressure sensor, but a preferred mechanism comprises cross wires traversing the mouthpiece which can not only sense the passage of inhalant, but also give an indication of its quality.
  • cross wires can be used to provide an indication of the proportion of carrier and active ingredient in the suspension which is drawn through the mouthpiece.
  • Portable devices are of course subject to movement as they are carried around, and an induction generator of the kind referred to above will thus generate power by this normal movement.
  • inhalers particularly are deliberately shaken before use to ensure uniform distribution of carrier and active ingredient in the inhalant, and this can ensure the generation of sufficient power to record relevant data from the subsequent use.
  • a device according to the invention can be a disposable unit. Such a unit could have a battery and relatively simple circuitry that would be sufficient for an inhaler of the kind described above.
  • Devices for monitoring less straightforward treatment regimes can include more complex circuitry with memories storing more detailed information.
  • Such devices would normally be reusable, with either a rechargeable component or a solar cell as the power source and/or have means for coupling to an external power source or other equipment.
  • the invention does of course have application in fields other than the monitoring of medical dosages.
  • a wide range of goods may be packaged in products according to the invention, and a wide range of information can be stored in the memory.
  • the quality of an item in the product can be monitored, as can any changes in the product contents.
  • Chemical reactions and temperatures can be monitored, and by coupling the memory to external equipment, the contents of the product can be subject to treatment in response to information derived from the memory.
  • this information is not as accurate or comprehensive as it might be hoped to be as, particularly for packaged products, the history of each individual product in the package may not be the same.
  • the present invention can be used to keep a record of a product's history from a chosen stage.
  • a device of the invention can be applied at a specific point in the manufacture of the product, with the initial data entered in the device being of course directly related to that particular stage. As the product moves through subsequent stages additional information will be entered.
  • the memory device would be accessible, with the ease of access being dependent of course upon the confidentiality of any data in the device, but the stored information would provide a history of the product, and thus important information for a subsequent user.
  • a tag or packaging can include a memory device of the invention, into which the information critical to its safe consumption has been programmed.
  • it can contain a record of when a piece of fruit was picked, and in what state; ie ripe, or green and still to be ripened, and subsequent dates identifying when a product should go on sale and critically of course, when it should be withdrawn from sale after too long on the shelves.
  • a device of the invention can be applied to a factory product at the early stage in its manufacture, and record subsequent stages in its manufacture together with relevant details of its components. With all this information accessible later in the product's life, in the event that a difficulty arises with it diagnosis of that difficulty and selection of a means by which the difficulty can be met will be greatly facilitated.
  • the invention can also be used in connection with packaged products.
  • the memory device being applied to the package rather than the individual products.
  • the device can though, be programmed with information specific to each product in the package, and if there are different criteria that apply to different products within the package, this information can be made available.
  • the invention has particular application to manufactured products.
  • such a product incorporates electronic circuitry forming an accessible memory programmed with data comprising details of its manufacture, and adapted to receive additional data relating to its subsequent history. That additional data can be user instructions and/or data relating to the eventual use of the product.
  • the means by which data relating to the eventual use of the product is entered into the memory can be automatic.
  • the product can include some mechanism by which the history of a product's use is recorded of the kind referred to above. In this way, the product itself can keep a record of its use and more importantly perhaps, of any misuse. In the subsequent analysis of the effectiveness of a product, its use or misuse according to given instructions is of course important.
  • the accessible memory in a device holds data relating to quite different aspects of a product
  • the memory can also be programmed with different levels of access.
  • An eventual user would of course need access to user instructions, and possible data relating to the eventual use or misuse of the product according to such instructions.
  • a supplier would certainly wish to have access to the user instructions and eventual use data in the event of a product provoking a complaint.
  • the manufacturer will of course wish to have access to all data held in the memory for guidance regarding future manufacturing practices. Particularly, the manufacturer will wish to monitor not only the performance of a product, but also the manner in which the performance varies in response to different user instructions and different levels of misuse of the product.
  • Devices of the invention can also be used to record information sensed rather than that which has been deliberately programmed into it. For example, if a product is to be stored in particular conditions such as temperature and humidity, then the memory device applied to it can include appropriate sensors that in effect notify the device if the relevant ambient condition goes beyond a predetermined limit. This information can then be made available to a subsequent handler of the product, who then has the option of making a judgement as to whether the product can be used. This feature does of course apply particularly to pharmaceuticals and medicines, but it can also be of value in the context of factory products which may use for example, a temperature sensitive component.
  • accessible memories can be applied to and sometimes implanted in manufactured products or their packaging in accordance with the invention to provide a history of that product over whatever period is chosen.
  • the memory in a pharmaceutical device can be programmed with basic manufacturing data, distribution details, user instructions and eventual use data, at different stages. If the product is in due course returned to the manufacturer, it will bear a comprehensive history which will be of considerable value in subsequent product development.
  • the memory circuitry can be formed integrally with a component or element of a product of the invention.
  • An example of such a product is an inhaler as described above, having a plastic body into which memory circuitry can be embedded or moulded.
  • the information initially programmed into the device can include details of the inhalant or liquid with which the device is loaded, the date of such loading, and a projected date by which either or all its contents should have been consumed, or if not consumed, should be discarded, as basic manufacturing data. Additional data can be entered subsequently, as described above. When the contents have been used, the product can be returned to the manufacturer to be re-filled. At that time, the memory can be fully read, and then cleared for re-programming when loaded with a fresh charge.
  • a wide variety of information may be programmed into an electronic memory in a manufactured product, packaging or product label.
  • point of sale data can be valuable as can be details of the eventual purchaser or user.
  • the reason or reasons for the acquisition of a product can also be of value. While this may be a little difficult to obtain for general retail products, for pharmaceutical products provision can certainly be made for the doctor or pharmacist to enter into the memory some details at least of the symptoms to be treated.
  • Memory circuitry can, according to the invention be easily applied to products, either physically attached by some conventional mechanism, or implanted in the body of a product or component thereof.
  • Electronic and indeed magnetic circuitry can be easily embedded in plastics materials, while still being programmable with additional data, and accessible to reveal the data it holds.
  • products formed predominantly in plastics materials can be designed and manufactured with devices of the invention as integral components.
  • Other products can easily be adapted to receive such devices, either in a separate housing or compartment, or as an attachment.
  • mechanisms can be incorporated in products to automatically record usage.
  • a treatment device such as a piezoelectric switch or proximity sensor, can be incorporated in many types of dispensers to keep a record of when and what dosage of a prescribed treatment was taken.
  • a treatment device such as a piezoelectric switch or proximity sensor
  • the invention also relates to a method of manufacturing a utilitarian device of the kind described above.
  • circuitry including the electronic memory is located in a mould cavity, and a plastics element injection moulded therein around the circuitry.
  • the plastics element is then incorporated in the device housing, although it will be appreciated that in some circumstances the plastics element can constitute the entire housing, both in effect being simultaneously injection moulded in the same cavity.
  • the electronic circuitry is typically printed on a normally flexible substrate, which can be readily suspended in a cavity in which plastics material can be injection moulded.
  • Other elements described above, batteries, disclosure (display) devices and connections for external electrical contacts can also be readily incorporated in the injection moulding process.
  • Figure 1 is a cross-sectional view of an inhaler mounted on a stand
  • Figure 2 is an end view of the assembly of Figure 1 ; and Figure 3 is a schematic representation of the electronic elements and circuitry in the inhaler and stand of Figures 1 and 2.
  • the inhaler shown in Figure 1 comprises a main body 2 and a mouthpiece 4. It is operated in the usual way by depression of a plunger 6 or suction to discharge a suspension of inhalant and carrier through the mouthpiece.
  • the housing is moulded in a plastics material such as polypropylene or ABS, and in a panel such as panel 8 of the housing circuitry including an electronic memory is embedded.
  • the circuitry is coupled to a battery 10, also embedded in the inhaler housing 2 with an induction generator 12 for charging the battery.
  • a typical magnetic induction generator unit is based on omnidirectional magnetic coils and is relatively cheap to produce.
  • the electronic circuit and memory are based on application specific integrated circuits (ASICs) which are also inexpensive components.
  • the induction generator will generate power during normal handling of the inhaler by virtue of its general movement and deliberate shaking prior to use.
  • the generator is normally oriented to form movement substantially parallel to the line of action of the plunger 6, as this will be the way in which the inhaler will be shaken naturally during everyday use.
  • the inhaler may itself be a modular construction, with the housing 2, the mouthpiece 4 and the front panel 8 being separate components.
  • the housing 2, for holding the plunger or canister 6, and the mouthpiece 4 may be disposable items, with the front panel 8 containing the electronic hardware, being retained for multiple use.
  • the unit 14 in the illustrated embodiment provides a simple indication of the quantity of inhalant retained in the housing.
  • the unit 16 provides rather more sophisticated information relating to the use to which the inhaler has been put. Of course, both units will only display information provided to them from the electronic memory and which the memory is programmed to display but typically, the unit 16 will indicate when a dose was last taken, and when the next dose should be taken. It can also normally show the amount of power remaining in the circuitry.
  • Each display unit typically comprises an electroluminescent system.
  • the stand 18 has a recess formed to complement the base of the inhaler, with an infrared (IR) or radio frequency (RF) window 20 which, when the inhaler is installed on the stand, in juxtaposition to a corresponding window 22 at the base of the panel 8 of the inhaler.
  • IR infrared
  • RF radio frequency
  • the stand itself will be connected to external equipment such as a PC which, through the windows 20, 22, can receive information from the electronic memory in the inhaler itself, and similarly program the circuitry to follow a new routine. Data may thus be transmitted, to or from the electronic circuitry.
  • Such windows can also be used to deliver either some initial power to the circuitry, or to charge or secure that sufficient charge has been applied to the circuitry to sustain its performance over a predetermined period.
  • the battery or power source for sustaining the memory and operating an electroluminescent display system may take the form of a capacitor and we have found a 1 F capacitor to be sufficient for this purpose.
  • Such capacitor can provide the required peak energy of around 5V at 2.5mA continuously for 1.5 hours.
  • short event use such capacitor can provide enough power to operate the circuitry and an electroluminescent display unit without charge for a period of three to four days.
  • Inhalers are normally used and carried around on a daily basis, and such normal movements will of course activate the induction generator to charge the battery. The system described does provide for long term operation.
  • Figures 3 and 4 show the basic circuitry in an inhaler and stand of the kind shown in Figure 1 formed with complementary l/R windows.
  • An EEProm memory 24 is coupled to a driver 26 in the dose counter 28.
  • the counter 28 includes a microcontroller which receives information from a dose detection circuit 30 activated by a sensor 32 which monitors actual use of the inhaler and/or responds directly to the operation of a switch 34 by the user taking a dose.
  • the counter 28 is powered by the battery 10 sustained by the induction generator 12.
  • An IR driver 36 is disposed at a surface of the body 2 to form a window (22) through which to communicate with complementary circuitry 38 in the stand.
  • the driver 36 includes both a transmitter 40 and a receiver 42.
  • the circuitry 38 comprises a microprocessor 44 for translating between
  • the microprocessor therefore includes an RS232 level converter 46 with an external connection to a PC 48, and an IR driver 50 with an IR receiver 52 and an IR transmitter 54 which, when the inhaler is located in the stand, are in respective juxtaposition to the transmitter 40 and receiver 42 of the dose counter.
  • An EEProm memory can register and store data at different interface levels. For an inhaler or medical dosage container, three different interfaces are recommended; production, distribution and usage. Production data is entered once, and becomes a permanent record in the memory. It will normally only be retrieved or erased is the memory is completely reset, for example when the device is returned to the manufacturer for re-use. Distribution data is entered at subsequent stages, and this can include user instructions from a prescribing medical professional or a pharmacy for an OTC product. This data too will normally only be erased when the memory is completely reset, and be retrievable with the production data upon recycling. Usage data is of course entered, either actively or passively, by the eventual user. Some of this data can be available to the user with the user instructions, but it will all be recorded for retrieval upon subsequent recycling of the device. In this way a device of the invention can in effect carry its entire history and provide invaluable data for manufacturers and medical practitioners.
  • the stand illustrated can be provided with the inhaler for the user to recharge the battery and/or monitor his or her use of the device by connecting the unit to a PC.
  • the manufacturer will of course have multiple stands for initial charging and programming, and for handling recycled units.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Pulmonology (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Hematology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Biophysics (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)
  • Electrotherapy Devices (AREA)

Abstract

L'invention concerne un dispositif utilitaire comprenant un élément dans lequel sont incorporés des circuits électroniques et un composant de stockage d'énergie pour ces circuits. Les circuits comprennent une mémoire électronique, et des moyens permettant d'introduire des informations dans cette mémoire pendant de l'utilisation du dispositif. Un générateur à induction peut également être incorporé à l'élément pour maintenir la charge du composant de stockage d'énergie. On peut introduire des informations dans la mémoire à n'importe quelle étape depuis la fabrication du dispositif jusqu'à son utilisation finale, de manière à créer un historique effectif du dispositif dans la mémoire. Dans une forme de réalisation particulière, ce dispositif est un inhalateur permettant à l'utilisateur final de conserver un enregistrement pratique des activités.
EP02755265A 2001-08-31 2002-08-30 Dispositifs utilitaires a memoire Withdrawn EP1420841A2 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
GB0121147 2001-08-31
GB0121147A GB0121147D0 (en) 2001-08-31 2001-08-31 Utilarian products
GB0125654 2001-10-25
GB0125654A GB0125654D0 (en) 2001-10-25 2001-10-25 Electronic memory devices
PCT/GB2002/003959 WO2003020349A2 (fr) 2001-08-31 2002-08-30 Dispositifs utilitaires a memoire

Publications (1)

Publication Number Publication Date
EP1420841A2 true EP1420841A2 (fr) 2004-05-26

Family

ID=26246492

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02755265A Withdrawn EP1420841A2 (fr) 2001-08-31 2002-08-30 Dispositifs utilitaires a memoire

Country Status (2)

Country Link
EP (1) EP1420841A2 (fr)
WO (1) WO2003020349A2 (fr)

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