CN204224290U - A kind of ultraviolet light-emitting diode water disinfection system - Google Patents
A kind of ultraviolet light-emitting diode water disinfection system Download PDFInfo
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- CN204224290U CN204224290U CN201420627903.8U CN201420627903U CN204224290U CN 204224290 U CN204224290 U CN 204224290U CN 201420627903 U CN201420627903 U CN 201420627903U CN 204224290 U CN204224290 U CN 204224290U
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- emitting diode
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Abstract
The utility model discloses a kind of ultraviolet light-emitting diode water disinfection system, comprises the ultraviolet light-emitting diode module that can produce UV-light, also comprises photochemical catalysis assembly; Described photochemical catalysis assembly comprises just facing at least one piece of photocatalysis board that ultraviolet light-emitting diode module is arranged; Described photocatalysis board front is coated with nano titanium oxide Catalytic Layer.Oxygen in sterilisation system of the present utility model and water body and water react the carboxyl free radical producing high reaction activity and the superoxide ion with strong oxidizing property.The two water body internal diffusion that need sterilizing, by making pathogenic agent inactivation to the protein of pathogenic agent, the oxidation of genetic material, realizes the thorough disinfection of space without dead angle.
Description
Technical field
The utility model relates to ultraviolet disinfection technical field, is specifically related to a kind of ultraviolet light-emitting diode water disinfection system.
Background technology
Ultraviolet lamp is a kind of conventional sterilization equipment, effectively can kill the pathogenic agent such as bacterium, virus, gemma of air and tool surfaces, be widely used in the sterilization in the spaces such as household, medical institutions, sterilisable chamber, sterilizing.But it is existing.Existing ultraviolet lamp mostly is low pressure mercury lamp, and its life-span is short, energy consumption is high and intensity of illumination is low.Ultraviolet light-emitting diode has that long service life, intensity of illumination are high, low power consumption and other advantages, is widely used in sterilization field.Existing ultraviolet lamp of taking is to the technique of water disinfection, and its concrete grammar is that employing is arranged on ultraviolet lamp on the water surface and irradiates water body.But no matter be low pressure mercury lamp or ultraviolet light-emitting diode, its UV-light by transfer of air to water body time, at the intersection (water surface) of air and water, all can suffer a loss because of reflection, the actual UV-light entered in water body is weakened.In addition, the radiation scope of UV-light in water body is very limited, if to large-scale water body disinfection, must correspondingly arrange a large amount of ultraviolet lamp, increases processing cost.Meanwhile, existing technique only can carry out disinfection to the region be exposed under UV-irradiation, and the region that cannot irradiate of UV-light, then without any the effect of sterilization, causes that the space of having sterilized is remaining sterilization " dead angle ".For strengthening sterilisation effect, reduce sterilization " dead angle ", common way arranges ultraviolet lamp for each position of water body, increases disinfection cost but not obvious to the raising of sterilisation effect.Meanwhile, existing ultraviolet lamp its any degradation effect be there is no to the toxic organic compound be suspended in water body, the pathogenic agent killing effect for this simple structure of virus, acellular device is in urgent need to be improved.
Utility model content
In view of this, the utility model discloses a kind of ultraviolet disinfection system carrying out thorough disinfection to water body.
The purpose of this utility model is achieved through the following technical solutions: a kind of ultraviolet light-emitting diode sterilisation system, comprises the ultraviolet light-emitting diode module that can produce UV-light, also comprises photochemical catalysis assembly; Described photochemical catalysis assembly comprises just facing at least one piece of photocatalysis board that ultraviolet light-emitting diode module is arranged; Described photocatalysis board front is coated with nano titanium oxide Catalytic Layer.
Ultraviolet light-emitting diode module of the present invention and photocatalysis board are all immersed in water body and work, UV-light is only conducted in a kind of medium, the problem of two media intersection light reflection ultraviolet when avoiding prior art medium ultraviolet light to enter water body from air, improves the intensity of water body medium ultraviolet light.Described nano titanium oxide Catalytic Layer can select any one commercially available nano titanium oxide to realize.The UV-irradiation that ultraviolet light-emitting diode module produces is on catalytic plate, nano titanium oxide wherein can produce hole-electron to and be discharged in water body, react the carboxyl free radical producing high reaction activity and the superoxide ion with strong oxidizing property with the oxygen in water body and water.The two is not subject to the restriction of UV-irradiation scope at the water body internal diffusion that need sterilize, by making pathogenic agent inactivation to the protein of pathogenic agent in water body, the oxidation of genetic material, realize the thorough disinfection of water body without dead angle.Meanwhile, the harmful organic substance such as formaldehyde, benzene type organic in described carboxyl free radical and superoxide ion decomposable asymmetric choice net water body, more can the genetic material such as Protein capsid and nucleic acid of Oxidative demage virus, improves sterilisation effect further.
Described ultraviolet light-emitting diode module comprises the skeleton of column, the ultraviolet light-emitting diode assembly be arranged on skeleton upper bottom surface and side; Described photocatalysis board is the reflection cup be arranged on below skeleton.
At the initial stage of UV-irradiation photocatalysis board, the catalytic efficiency of nano titanium oxide is lower, and in this stage, the direct irradiation sterilization of UV-light still has obvious effect.For improving the range of exposures of UV-light, the utility model ultraviolet light-emitting diode module comprises the skeleton of column, and the ultraviolet light-emitting diode assembly that can produce UV-light is arranged on the surface of skeleton, thus improves the lighting angle of ultraviolet light-emitting diode module.Simultaneously the utility model also adopts and to be arranged on below skeleton reflection cup as described photocatalysis board, the area that reflection cup receives UV-light is larger, be conducive to the reaction site increasing nano titanium oxide catalyzed reaction, it be down to minimum on the impact of blocking of UV-light simultaneously.Reflection cup can also reflect UV-light, assemble, thus strengthens the ultraviolet ray intensity be radiated in nano titanium oxide Catalytic Layer.Namely described nano titanium oxide Catalytic Layer is arranged on reflection cup surface.In the utility model, described reflection cup can select any one commercially available reflection cup.In the utility model, described ultraviolet light-emitting diode assembly can select any one to be provided with the electronic component of ultraviolet light-emitting diode, is particularly preferably the flexible circuit board being provided with ultraviolet light-emitting diode.In the present invention, the ultraviolet wavelength that above-mentioned ultraviolet light-emitting diode produces is 280 ~ 500nm.Described skeleton can be made up of metallic substance, to improve the radiating effect of ultraviolet light-emitting diode.
The quantity of described photocatalysis board is 2 ~ 5 pieces, and it is concentric with the bottom surface of described skeleton, and is sleeved on the below of skeleton successively; Its internal diameter of photocatalysis board of inner side is 1.2 ~ 1.5 times of skeleton bottom surface diameter; The difference of the internal diameter of adjacent photocatalysis board is 0.5 ~ 0.9 times of skeleton bottom surface diameter; The height of described photocatalysis board is 0.1 ~ 0.3 times of skeleton height.
The below of described photocatalysis board is also provided with the current generating assembly that can produce current; The high-pressure air source that described current generating assembly comprises an air nozzle and is communicated with air nozzle; Described air nozzle is the ring bodies of the hollow parallel with skeleton bottom surface, and the cross section of ring bodies is the water-drop-shaped shunk gradually from the bottom to top, and the bottom of ring bodies is communicated with described high-pressure air source by pipeline; The middle part of the inner side of described ring bodies offers one and the body concentric opening of ring-type.
For improving the velocity of diffusion of described carboxyl free radical and superoxide ion, the utility model is provided with current generating assembly in the below of photocatalysis board, it can produce carboxyl free radical that photocatalysis board produces by current upwards and superoxide ion is taken away, the aerial diffusion of both acceleration.Air nozzle provided by the utility model simultaneously, its cross section is the water-drop-shaped shunk gradually from the bottom to top, and high-pressure air, from the opening ejection inside ring bodies, has higher velocity of flow, makes the inside of ring bodies form a low pressure area.Hydraulic pressure outside ring bodies is entered the low pressure area inside ring bodies by pressure difference, thus increases the discharge (as bernoulli principle) flowing through catalytic plate.Current flow to photocatalysis board place, are subject to the stop of photocatalysis board, turbulization.Turbulent flow contributes to carboxyl free radical and the diffusion of superoxide ion in current.The utility model carboxyl free radical and the superoxide ion rate of diffusion in water body relies on the rate of diffusion of pedesis in water body far above the two, is conducive to improving sterilisation effect of the present utility model.And jet process contributes to increasing water body oxygen level, strengthen sterilisation effect.
Described its raw material of nano titanium oxide Catalytic Layer comprises 0.5 ~ 2.5 part of nanometer anatase titania by weight, 30 ~ 80 parts of concentration are the tetrafluoroethylene concentrated solution of 20%, 2 ~ 10 parts of polyacrylamides, 0.5 ~ 1.1 part of sodium dodecylbenzene, the gold nanorods of 0.01 ~ 0.05 part and 5 ~ 7 parts reflective dose.
Described nanometer anatase titania, tetrafluoroethylene, polyacrylamide, sodium dodecylbenzene, gold nanorods are commercially available prod.Applicant finds, a small amount of gold nanorods exists the catalytic efficiency that significantly can promote nanometer anatase titania.Meanwhile, because nano titanium oxide Catalytic Layer is in the irradiation of UV-light for a long time, very easily aging and break, come off, life-span when affecting of the present utility model.Gold nanorods can reinforced TFE, polyacrylamide stability, the final ageing resistance improving nano titanium oxide Catalytic Layer, extends work-ing life of the present utility model.Sodium dodecylbenzene can promote the mixing of nano titanium oxide, tetrafluoroethylene, polyacrylamide, gold nanorods and reflective dose, makes it the mixed system that formation one is stable, effectively can prevent precipitation or the reunion of nano titanium oxide, gold nanorods.Sodium dodecylbenzene also can reduce the surface tension of obtained nano titanium oxide Catalytic Layer simultaneously, contributes to oxygen, water contact strength with it, improves catalytic efficiency.Can select reflective dose of any one commercially available LED product for reflective dose, it can light reflection ultraviolet, thus strengthens the ultraviolet ray intensity be radiated on photocatalysis board, intensified response speed.
Described nanometer anatase titania particle diameter is 50 ~ 90nm; Described gold nanorods length is 80 ~ 150nm; Described reflective dose for particle diameter be the rutile titanium dioxide of 0.1 ~ 0.25 μm.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the STRUCTURE DECOMPOSITION figure of the utility model ultraviolet light-emitting diode module.
Fig. 3 is the sectional view of the utility model ultraviolet light-emitting diode assembly.
Fig. 4 is the sectional view of the utility model photochemical catalysis assembly.
Fig. 5 is the sectional view of the utility model air nozzle.
Embodiment
The utility model to be described in further detail below in conjunction with accompanying drawing and embodiment for the ease of it will be appreciated by those skilled in the art that:
Embodiment 1
The utility model provides a kind of ultraviolet light-emitting diode sterilisation system, as shown in Figure 1, comprises the ultraviolet light-emitting diode module 1 that can produce UV-light, also comprises photochemical catalysis assembly 2.As shown in Figure 2, described ultraviolet light-emitting diode module comprises the skeleton 11 of column, the ultraviolet light-emitting diode assembly be arranged on skeleton upper bottom surface and side.Described ultraviolet light-emitting diode assembly comprises the side ultraviolet light-emitting diode assembly 12 being wrapped in skeleton side and the upper bottom surface ultraviolet light-emitting diode assembly 13 covering skeleton upper bottom surface.As shown in Figure 3, the described ultraviolet light-emitting diode assembly UV LED chips 122 that comprises flexible circuit board 121 and be communicated with the circuit of flexible circuit board.UV LED chips alleged by the utility model can be that any one includes the electronic component of ultraviolet light-emitting diode.
In the present embodiment, described photochemical catalysis assembly comprises just facing to one piece of photocatalysis board 21 that ultraviolet light-emitting diode module is arranged.This photocatalysis board 21 is specially the reflection cup for being arranged on below skeleton, and its going to the bottom with skeleton is concentric and parallel.As shown in Figure 3, described photocatalysis board 21 front is coated with nano titanium oxide Catalytic Layer 22, and this layer thickness is 0.2 times of photocatalysis board thickness.
More concrete, described its raw material of nano titanium oxide Catalytic Layer comprises 1.2 parts of nanometer anatase titanias by weight, 40 parts of concentration are the tetrafluoroethylene concentrated solution of 20%, 5 parts of polyacrylamides, 0.8 part of sodium dodecylbenzene, the gold nanorods of 0.03 part and 4 parts reflective dose.
Described nanometer anatase titania particle diameter is 80 ~ 90nm; Described gold nanorods length is 100 ~ 150nm; Described reflective dose for particle diameter be the rutile titanium dioxide of 0.25 μm.
In the present embodiment, the raw material of the nano titanium oxide Catalytic Layer such as described anatase titanium dioxide, gold nanorods is commercially available prod.
In the present embodiment, the preparation method of above-mentioned nano titanium oxide Catalytic Layer is as follows:
By nanometer anatase titania, tetrafluoroethylene concentrated solution, polyacrylamide, sodium dodecylbenzene mixing, and in rotary shaker, shake 1 hour with 120 turns/min after being heated to 30 ~ 40 DEG C, add gold nanorods post-heating to 50 DEG C, shake 30min with 100 turns/min, after adding described reflective dose, shake 10min with 100 turns/min.Mixture is coated on photocatalysis board front, dries 3 hours with 50 DEG C, after being cooled to room temperature, photocatalysis board is immersed in 30S in the water of 0 DEG C, after drying, just obtains the nano titanium oxide Catalytic Layer of the present embodiment.
Soaking 30S in the water of 0 DEG C, the stress between nano titanium oxide Catalytic Layer and photocatalysis board contact surface can be eliminated, strengthening the weathering resistance of nano titanium oxide Catalytic Layer.
As shown in Figure 4, the below of photocatalysis board described in the present embodiment is also provided with the current generating assembly that can produce current; The high-pressure air source that described current generating assembly comprises an air nozzle 31 and is communicated with air nozzle; Described air nozzle 31 is the ring bodies of the hollow parallel with skeleton 11 bottom surface, and the cross section of ring bodies is the water-drop-shaped shunk gradually from the bottom to top, and the bottom 311 of ring bodies is communicated with described high-pressure air source by pipeline 32; The middle part of the inner side of described ring bodies offers one and the body concentric opening 312 of ring-type.
In the present embodiment, described high-pressure air source can select any one commercially available high-pressure pump, compressor to realize, as impeller pump, reciprocation pump etc.
Embodiment 2
The present embodiment provides a kind of ultraviolet light-emitting diode sterilisation system, and its its raw material of nano titanium oxide Catalytic Layer comprises 0.5 part of nanometer anatase titania by weight, 80 parts of concentration are the tetrafluoroethylene concentrated solution of 20%, 2 parts of polyacrylamides, 1.1 parts of sodium dodecylbenzenes, the gold nanorods of 0.01 part and 7 parts reflective doses.
Described nanometer anatase titania particle diameter is 70nm; Described gold nanorods length is 90nm; Described reflective dose for particle diameter be the rutile titanium dioxide of 0.1 μm.
All the other structures are consistent with embodiment 1.
Embodiment 3
The present embodiment provides a kind of ultraviolet light-emitting diode sterilisation system, and it does not comprise current generating assembly.All the other structures are consistent with embodiment 1.
Embodiment 4
The present embodiment provides a kind of ultraviolet light-emitting diode sterilisation system, and it does not comprise current generating assembly.All the other structures are consistent with embodiment 1.
Comparative example 1
This comparative example provides a kind of ultraviolet light-emitting diode sterilisation system, and it comprises the rectilinear line plate that is provided with ultraviolet light-emitting diode.
Comparative example 2
This comparative example provides a kind of ultraviolet light-emitting diode sterilisation system, its its raw material of nano titanium oxide Catalytic Layer comprises 2.5 parts of nanometer anatase titanias by weight, 80 parts of concentration is 20% tetrafluoroethylene concentrated solution, 5 parts of polyacrylamides.All the other structures are consistent with embodiment 1.
Sterilisation effect test experiments
Multiple pond filling pending water is set, each ultraviolet light-emitting diode sterilisation system is placed in each basin bottom.Between sterilisation system and pond wall, erect a light barrier, this light barrier is parallel with the wall in pond, makes the UV-light of sterilisation system cannot irradiate the back side of light barrier.Each pond medium ultraviolet optical energy irradiation to region and the light barrier back side respectively draw the water of 10mL, and to add respectively in the sterilized water of 1L, after concussion 30min, get 0.1mL suspension, with the microorganism concn of this suspension of coating method dosage.
The yield of radiation of sterilisation system to water body is made to reach 8 ~ 15mj/cm
2, wavelength is in 440 ~ 580nm, process 200min.Each secret room medium ultraviolet optical energy irradiation to region and the light barrier back side respectively draw the water of 10mL, and to add respectively in the sterilized water of 1L, after concussion 30min, get 0.1mL suspension, with the microorganism concn of this suspension of coating method dosage.
Its result is as shown in table 1.
Table 1 colony count cartogram
To organic substance decomposing performance test in water body
In water body, add formaldehyde, make water body concentration of formaldehyde reach 5mg/m
3(adopting GBT15516-1995 test).Sterilisation system yield of radiation is made to reach 8 ~ 15mj/cm
2, wavelength is in 440 ~ 580nm, process 500min.Concentration of formaldehyde in test water again, its result is as shown in table 2.
Table 2 concentration of formaldehyde cartogram
| Group | Air formaldehyde concentration (mg/cm 3) |
| Embodiment 1 | 1.3 |
| Embodiment 2 | 1.2 |
| Embodiment 3 | 2.3 |
| Embodiment 4 | 1.9 |
| Comparative example 1 | 5 |
| Comparative example 2 | 4.1 |
Nano titanium oxide Catalytic Layer ageing resistance is tested
Under nanometer titanium dioxide layer on photocatalysis board being exposed to the UV-irradiation of wavelength 300 ~ 500nm, yield of radiation is 50j/cm
2, process 300 hours.Observe the appearance change of nano titanium oxide Catalytic Layer, and adopt diameter to be the stainless steel syringe needle of 0.2mm, with the pressure of 20Kpa delineation nano titanium oxide Catalytic Layer, observe the dropping situations of nano titanium oxide Catalytic Layer.Its result is as shown in table 3:
Table 3 nano titanium oxide Catalytic Layer ageing resistance test result
| group | test result |
| embodiment 1 | color is pure white, surfacing leakless.Without coming off after delineation. |
| embodiment 2 | color is pure white, surfacing leakless.Without coming off after delineation. |
| embodiment 3 | color is pure white, surfacing leakless.Without coming off after delineation. |
| embodiment 4 | color is pure white, surfacing leakless.Without coming off after delineation. |
| comparative example 2 | color is beige, and surface exists fine cracks.Powdery substance is had to come off through delineation. |
Sterilisation effect test in feculent water body
Arrange multiple pond filling pending water, its shape is the rectangle of 2m × 2m × 2m.Embodiment 1 and the sterilisation system of embodiment 4 are separately positioned on each basin bottom.In pending water body, add white bole makes its turbidity reach 8NTU.Draw the water of 10mL from the side wall surface that pond 1m is high, and add respectively in the sterilized water of 1L, after concussion 30min, get 0.1mL suspension, with the microorganism concn of this suspension of coating method dosage.The yield of radiation of sterilisation system to water body is made to reach 8 ~ 15mj/cm
2, wavelength is in 340 ~ 500nm, after process 200min, draws the water of 10mL, and add respectively in the sterilized water of 1L from the side wall surface that pond 1m is high, after concussion 30min, get 0.1mL suspension, with the microorganism concn of this suspension of coating method dosage.Its result is as table 4.
Table 4 colony count cartogram
Be more than wherein specific implementation of the present invention, it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these apparent replacement forms all belong to protection scope of the present invention.
Claims (4)
1. a ultraviolet light-emitting diode sterilisation system, comprises the ultraviolet light-emitting diode module (1) that can produce UV-light, it is characterized in that: also comprise photochemical catalysis assembly (2); Described photochemical catalysis assembly comprises just facing at least one piece of photocatalysis board (21) that ultraviolet light-emitting diode module is arranged; Described photocatalysis board front is coated with nano titanium oxide Catalytic Layer (22).
2. system according to claim 1, is characterized in that: described ultraviolet light-emitting diode module comprises the skeleton (11) of column, the ultraviolet light-emitting diode assembly be arranged on skeleton upper bottom surface and side; Described photocatalysis board (21) is for being arranged on the reflection cup below skeleton.
3. system according to claim 2, is characterized in that: the quantity of described photocatalysis board is 2 ~ 5 pieces, and it is concentric with the bottom surface of described skeleton, and is sleeved on the below of skeleton successively; Its internal diameter of photocatalysis board of inner side is 1.2 ~ 1.5 times of skeleton bottom surface diameter; The difference of the internal diameter of adjacent photocatalysis board is 0.5 ~ 0.9 times of skeleton bottom surface diameter; The height of described photocatalysis board is 0.1 ~ 0.3 times of skeleton height.
4. system according to claim 2, is characterized in that: the below of described photocatalysis board is also provided with the current generating assembly that can produce current; The high-pressure air source that described current generating assembly comprises an air nozzle (31) and is communicated with air nozzle; Described air nozzle (31) is the ring bodies of the hollow parallel with skeleton (11) bottom surface, the cross section of ring bodies is the water-drop-shaped shunk gradually from the bottom to top, and the bottom (311) of ring bodies is communicated with described high-pressure air source by pipeline (32); The middle part of the inner side of described ring bodies offers one and the body concentric opening of ring-type (312).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420627903.8U CN204224290U (en) | 2014-10-24 | 2014-10-24 | A kind of ultraviolet light-emitting diode water disinfection system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420627903.8U CN204224290U (en) | 2014-10-24 | 2014-10-24 | A kind of ultraviolet light-emitting diode water disinfection system |
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| CN204224290U true CN204224290U (en) | 2015-03-25 |
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| CN201420627903.8U Withdrawn - After Issue CN204224290U (en) | 2014-10-24 | 2014-10-24 | A kind of ultraviolet light-emitting diode water disinfection system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104291411A (en) * | 2014-10-24 | 2015-01-21 | 深圳莱特光电有限公司 | Water sterilization system for ltraviolet light-emitting diodes |
-
2014
- 2014-10-24 CN CN201420627903.8U patent/CN204224290U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104291411A (en) * | 2014-10-24 | 2015-01-21 | 深圳莱特光电有限公司 | Water sterilization system for ltraviolet light-emitting diodes |
| CN104291411B (en) * | 2014-10-24 | 2016-03-02 | 深圳莱特光电股份有限公司 | A kind of ultraviolet light-emitting diode water disinfection system |
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| CP01 | Change in the name or title of a patent holder |
Address after: 518000, 95, Fifth Industrial Zone, Mashan village, Gongming Town, Shenzhen, Guangdong, Baoan District Patentee after: SHENZHEN LIGHT ELECTRONICS CO., LTD. Address before: 518000, 95, Fifth Industrial Zone, Mashan village, Gongming Town, Shenzhen, Guangdong, Baoan District Patentee before: Shenzhen LIGHT Electronics Co., Ltd. |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20150325 Effective date of abandoning: 20160302 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20150325 Effective date of abandoning: 20160302 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |