CN202133616U - Plasma atomizer applicable to portable element spectrograph - Google Patents
Plasma atomizer applicable to portable element spectrograph Download PDFInfo
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- CN202133616U CN202133616U CN201120246439U CN201120246439U CN202133616U CN 202133616 U CN202133616 U CN 202133616U CN 201120246439 U CN201120246439 U CN 201120246439U CN 201120246439 U CN201120246439 U CN 201120246439U CN 202133616 U CN202133616 U CN 202133616U
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Abstract
The utility model discloses a plasma atomizer applicable to a portable element spectrograph. The plasma atomizer comprises a plasma flame torch tube, a microwave energy applying device, a plasma triggering device and a plasma flame torch stabilizing chamber, wherein the plasma flame torch tube is composed of a sample conveying inner tube, a central tube coaxially sleeved outside the inner tube and made of conductive metal and an outer tube shell coaxially sleeved outside the central tube; the microwave energy applying device is composed of a microwave source and an antenna connected with the microwave source via a microwave transmission lead; and the antenna is arranged outside the central tube wall near the outlet. The plasma triggering device is connected with a plasma flame torch zone via a lead; the plasma flame torch stabilizing chamber is disposed at the end opening of the plasma flame torch tube; the chamber wall is designed with a waste gas exhaust outlet and a window for arranging a light collection device used as a part of a spectrum measurement processing system. The element spectrograph manufactured by the plasma atomizer of the utility model can achieve online and real-time detection, and is featured by high detection sensitivity, low power consumption, small amount of gas consumption and the like.
Description
Technical field
The utility model relates to element spectral measurement analyser, is specifically related to the plasma atomizer in the portable element spectrometer.
Background technology
Along with the development and the progress of industrial technology, transition metal, REE, actinide, alkaline metal and alkali earth metal are used also more and more widely, and be simultaneously also more and more serious by its pollution that causes.Preparation technology with beryllium is an example, and beryllium is by extracting and be converted into beryllium hydroxide in the beryl, is used to realize synthetic, the ceramic production of metal alloy and oxide, the industry and the military uses such as preparation of pure beryllium.Because the increasing of supervision and to the lifting of beryllium recognizing dangers, at production, purification and the beryllium product of beryllium in industry, commercial use, to beryllium content in the context carry out in time, exactly mensuration seems particularly important.
The enhancing of Along with people's social enviroment protection consciousness and to the lifting of labourer's due care degree, countries in the world are strong for the increasing demand that realizes transition metal, REE, actinide, alkaline metal and alkali earth metal in the monitoring air and water sample in real time.In addition; In industrial processes, can carry out quality control through detection to some element; Can save production cost in a large number, reduce or eliminate the generation of waste product, the coating process in producing like semi-conductor industry; And biomedicine field, environmental area, metallurgical Exploration Domain, space industry etc., all can carry out quality of production control through some element is detected.Therefore, develop highly sensitive, and can be fast, the portable checkout equipment of above-mentioned element in the on-line real time monitoring industrial emissions, become the task of top priority of various countries and the target of chasing for a long time.
United States Patent (USP) (U.S.Pat.No.4; 844; 612 (Durr and Rozain, Jul.4,1989)) disclose and a kind ofly applied excitation energy through electromagnetic field article on plasma body; Utilize electro-induction coupled plasma emission spectrum to realize the sample element is carried out the method for analyzing and testing, can be used for beryllium or other trace elements in the tracer liquid sample.Be used to implement the detector that element detects, comprise that mainly detected sample and plasma keep gas drawing-in system, plasma atomization system and spectral measurement disposal system, wherein plasma atomization system applies electromagnetic field with radio frequency (RF) as the energy of formation plasma; The frequency of RF is 27-28MHz; Because the frequency of RF is low, penetration capacity is not strong, in order to obtain stable plasma torch; Need to use powerful RF to build electromagnetic field; Its power generally must reach 1000-2000W, and the airshed of keeping of plasma also must be big simultaneously, reach 15-25L/min.In view of radio frequency (RF) power of this elements are contained appearance is big, need to be equipped with special-purpose power power-line, it is big that plasma is kept gas flow; The drawing-in system device volume is big; And need the special ventilating system of configuration, therefore, this measuring instrument is the desk-top fixed equipment that use in a kind of laboratory; People can only deliver to the measurement that trace element is carried out in the laboratory with sample, can not be used for online or on-the-spot test sample being detected in real time.Causing the above-mentioned not enough fundamental cause that produces of this elements are contained appearance is its plasma atomizer.
The utility model content
Element detector present situation based on prior art; The purpose of the utility model aims to provide a kind of plasma atomizer that is applicable to portable element spectrometer; Can realize that to satisfy people's preparation online in real time detects; Detection sensitivity is high, the tight demand of the novel element detector economical and practical again, that energy consumption is low.
The plasma atomizer that is applicable to portable element spectrometer that the utility model provides; Comprise plasma torch pipe, microwave energy bringing device, plasma initiating device and plasma torch equalization chamber; Said plasma torch pipe by pipe in the sample delivery, it is coaxial that to be nested with outside interior pipe material be that the middle pipe and the coaxial outer pipe shell that is nested with outside middle pipe of conducting metal constitutes; Perimetrical lumen between the interior Guan Yuzhong pipe is that plasma is kept the letter shoot road; Said microwave energy bringing device is made up of with the antenna that is connected with microwave source through the microwave transmission lead microwave source; The tube wall of pipe was outer near the exit during antenna was arranged on; Said plasma initiating device connects the plasma torch district through lead, and said torch equalization chamber is arranged on the plasma torch pipe port, and locular wall is designed with outlet port and is used to be provided with the window as the light collecting device of a spectral measurement disposal system part.
In order to obtain better technique effect, on the basis of technique scheme, the utility model also can further be taked following technical measures.Following technique measures can be taked separately respectively, also can a plurality of measure combinations take, or takes simultaneously in the lump.
Torch equalization chamber in the plasma atomization system, its locular wall is preferably disposed on the trough place of microwave propagation direction, and chamber radial dimension and axial dimension all are not more than 5 wavelength.According to this characteristics design torch equalization chamber.
In the middle pipe of plasma torch pipe and the perimetrical lumen between the outer pipe shell, be provided with the microwave reflection mirror, the microwave reflection mirror is positioned at the microwave antenna below, so that the microwave energy of antenna emission is reflexed to the plasma torch zone.In the perimetrical lumen in the microwave reflection mirror preferably can move up and down and be arranged on with regulating between pipe and the outer pipe shell.The distance of microwave antenna and microwave reflection mirror is preferably the odd multiple of microwave 1/4 wavelength, like 1/4,3/4,5/4,7/4 λ.Wherein 1/4 λ helps the miniaturization of instrument most.Microwave antenna is the antenna that can coincide with middle pipe outer tube wall, and like the ring body antenna, ring body can be loopful, semi-ring, ring piece etc.The preferential loopful body antenna that fits like a glove with middle pipe outer tube wall that adopts.Antenna and middle pipe port should be tried one's best approaching, transfer to the plasma torch district efficiently with the assurance microwave energy, and avoid microwave in the plasma torch pipe, vertically to transmit the interference that brings.
Under the special demands situation, can on the outer pipe shell housing wall of plasma torch pipe, electronic semi-conductor's cooling piece be set, cool off with article on plasma body torch pipe outer pipe shell.It can certainly be other the type of cooling.
At least one plasma that is evenly equipped with some through holes is set in the perimetrical lumen between middle pipe and interior pipe keeps the gas distributor; The through hole that through hole on the distributor preferably tilts towards direction makes plasma keep gas and is the eddy flow shape and flows out from the plasma torch pipe.
Be designed with the equalizing port that at least one is used for the inside and outside gaseous tension of balance pipe on the tube wall of middle pipe.
Torch equalization chamber over top is designed with the toxic emission chamber, and torch equalization chamber is communicated with the toxic emission chamber through the through hole that is positioned at the center of top place, and outlet port designs on the sidewall of drain chamber.
The window design that is used to be provided with spectral measurement disposal system light collecting device faces the scope of plasma torch at torch equalization chamber sidewall.
The length of plasma torch pipe is preferably designed as the odd of microwave 1/4 wavelength, and is not more than 200cm.Concrete length depends on the requirement that instrument is portable.Generally, the length of plasma torch pipe is 1/4 or 3/4 wavelength, is approximately 5cm to 15cm.
The middle pipe of plasma torch pipe is simultaneously as the conduit of microwave energy, so its material is necessary for the material that can electricity lead, with compatible microwave energy transfer.Its optional material has copper, brass, aluminium, stainless steel, silver, gold and alloy thereof.Inner tube material can be conductor or insulator, comprises copper, brass, aluminium, stainless steel, silver, gold and alloy thereof, and is quartzy, ceramic.Wherein stainless steel has best corrosion resistance and plasma stability with pottery.
Microwave frequency all can be used for exciting and stable plasma between 1000MHz to 10000MHz.Usual range is 2000-3000MHz, and wherein optimum frequency is 2450MHz.Plasma torch is stablized power demand and is generally 50-200W or higher.Any microwave source device that proper frequency scope microwave energy is provided all can be used as the microwave source of the microwave energy bringing device of the utility model.Usually the microwave source that adopts has microwave oscillator, magnetron and klystron generator motor.Wherein magnetron becomes the optimal selection of microwave source with the power bracket of its broad.The microwave transmission lead pass plasma torch pipe outer pipe shell with microwave energy from microwave source transfer to be arranged on the pipe on antenna.The microwave call wire can be concentric cable, waveguide or other suitable device.
The initiation of realization plasma can be kept gas through the plasma of article on plasma tagma scope and apply enough energy to produce kind of an electronics.But the using plasma initiating device reaches plasma slab through conductor with the excitation energy of its generation, keeps exciting of gas to realize the article on plasma body.
The plasma slab flame shape can be flamboyancy or ring-type, all can be used for the measurement to testing sample.The shape of torch depends on the shape of the plasma torch pipe mouth of pipe.
Plasma torch equalization chamber is used to protect the plasma torch district to prevent that air-flow or extraneous gas from getting into and keeping the stable of plasma torch.The material of any anti-plasma high temperature all can be used for plasma torch equalization chamber.
The portable element spectrometer of online detection that the plasma atomizer that adopts the utility model to provide prepares; Have that powerful, easy to carry, compact conformation, flexible operation, support on-the-spotly detect, advantages such as low manufacturing cost and running cost; Can be applied to the occasion that all need carry out on-the-spot or online liquid and gas sample fast measuring very ideally; In a plurality of fields, all has greatly market development potential; Its exclusive advantage will provide great facility for the Government Laboratory that relates to manufacturing, offal treatment, nuclear fuel material recycling with portable, also will help the relevant teaching and the research work of institution of higher learning.
The portable element spectrometer of online detection that the plasma atomizer that the utility model is provided prepares has the industry and the field of big demand:
Semiconductor manufacturing industry
Environmental monitoring
Food & Drink processing
The energy and material science
Petrochemicals is analyzed
Geologic prospecting and exploitation
Nuclear material processing, national security and national defence
Electronics and space industry
Institution of higher learning's teaching and scientific research
The portable element spectrometer of the online detection advantage part of the plasma atomizer preparation that the utility model provides:
Power is low, not equipment which requires cooling.Compare with traditional I CP-AES (power is 1500-2800W), the power of the portable element spectrometer of this online detection significantly descends, and is merely 50-200W.ICP-AES independently water storage device is used for forcing cooling with relevant refrigeration piping, and the portable element spectrometer of this online detection is without any need for external refrigeration equipment.
Gas consumption is low.Common competitive instrument all has bigger gas consumption, is about 15-50L/min, is used to form plasma, plasma protection gas and transmission sample.The gas consumption of the portable element spectrometer of this online detection is lower than 1.0L/min.
Institute takes up space little.Conventional instrument requisite space is all above 1m
3(not comprising atomizing and cooling device).And the portable element spectrometer of this online detection combines behind the atomization plant only 0.06m
3(not needing cooling device), its volume ratio General Instrument has dwindled more than 16 times.
Weight is little.At present available product weight surpasses 180kg (not comprising atomizer and water cooling equipment) mostly.The weight of the portable element spectrometer of this online detection is only about 30kg, than the light 6-12 of similar other instruments doubly.
Cost is low.
Help keeping the cleaning of indoor environment.Existing ICP-AES all is equipped with not contact above its plasma chamber ventilating duct (diameter is 15cm) is used for plasma gas is discharged to outdoor.Yet the gas of emptying will not influence the cleaning of indoor environment.The portable element spectrometer of this online detection is because its low-power and low-flow amount only need a filtrator and a simply pipeline.
But nearly all element in the sense cycle table.
Description of drawings
Fig. 1 is the structural representation of the portable element spectrometer of the plasma atomizer preparation that provided by the utility model.Be used for the also detection of body sample.
Fig. 2 is a kind of structural representation of the portable element spectrometer drawing-in system of the plasma atomizer preparation that provided by the utility model, is used for the detection of gaseous sample.
In above-mentioned each accompanying drawing, each shown by reference numeral sign object is respectively: manage among the 1-; Pipe in the 2-; The 3-shaft collar; The 4-outer pipe shell; 5-microwave reflection mirror; 6-electronic semi-conductor cooling piece; The 7-tours antenna; 8-spectral measurement treating apparatus; The 9-convex lens; Toxic emission chambers 10; The 11-plasma torch; The 12-plasma torch; The 13-microwave source; The 14-plasma is kept the gas distributor; The 15-equalizing port; The 16-gasometer; The 17-gasometer; The 18-discharge pump; The 19-atomizer; 20-removal of solvents device; The 21-exsiccator.
Embodiment
Below in conjunction with embodiment the utility model is done further to specify; It is important to point out; Following embodiment only is used for the utility model is done further explanation, can not be interpreted as the restriction to the utility model protection domain, and affiliated art skilled is according to the foregoing invention content; The utility model is made some nonessential improvement and practical implementation is carried out in adjustment, should still belong to the protection domain of the utility model.
Embodiment 1
Present embodiment is the portable element spectrometer that is used for the online detection of fluid sample that is prepared by the plasma atomizer that the utility model provides, mainly by sample drawing-in system, plasma atomization system and spectral measurement disposal system.Wherein plasma atomization system is made up of the equalization chamber and the toxic emission chamber 10 of plasma torch pipe, microwave energy bringing device, microwave reflection mirror 5, plasma initiating device 12, plasma torch.Said plasma torch pipe by manage 2 in the sample delivery, it is coaxial that to be nested with outside interior pipe material be that the middle pipe 1 and the coaxial outer pipe shell 4 that is nested with outside middle pipe of conducting metal constitutes; Perimetrical lumen between the interior Guan Yuzhong pipe is that plasma is kept the letter shoot road; Its import and the plasma in the drawing-in system are kept the gas outlet and are connected, and the import of interior pipe exports with testing sample in the sample drawing-in system and is connected.The tours antenna 7 that said microwave energy bringing device matches by microwave source 13, with middle pipe 1 tube wall with pass the microwave transmission concentric cable that outer pipe shell 4 is connected with tours antenna 7 and constitute, tours antenna is arranged near middle tube wall outer near the exit.Annular space in said microwave reflection mirror 5 can be arranged on through regulating device up or down between pipe and the outer pipe shell; Be positioned at the position of microwave tours antenna below apart from antenna 3/4 microwave wavelength; Said regulating device is made up of with set screw the shaft collar 3 on the pipe shell in being fixed on, and the two ends of screw act on microwave reflection mirror and shaft collar respectively.Said plasma initiating device 12 connects the plasma torch district through lead.Said torch equalization chamber is arranged on the plasma torch pipe port; The locular wall of torch equalization chamber is positioned at the trough place of microwave; The diameter of torch equalization chamber and axial height are a wavelength; Be designed with on the torch equalization chamber sidewall and be used to be provided with window as the convex lens 9 of a spectral measurement disposal system part; Over top is designed with toxic emission chamber 10 in torch equalization chamber, and torch equalization chamber is communicated with the toxic emission chamber through the through hole that is positioned at the center of top place, and outlet port designs on the sidewall of drain chamber.Fluid sample in the said drawing-in system is introduced subsystem; Peristaltic pump 18, atomizer 19, removal of solvents device 20 and exsiccator 21 by the conveying fluid sample that connects successively through pipeline constitute, and the outlet of exsiccator is connected with the interior pipe import of plasma torch pipe; Plasma in the drawing-in system is kept gas introducing subsystem and is provided with two introducing branch roads; The meter 17 of leading up to is connected with the atomizer that liquid test sample article are introduced in the subsystem; Fluid sample is atomized; Another road is kept the conduit entrance of gas conveying annular through meter 16 and the plasma in the plasma torch pipe and is connected, and keeps gas for plasma provides.The spectral measurement disposal system with double lens 9 as as the spectrum gathering-device; By luggable computer control spectral measurement treating apparatus 8; The spectral measurement treating apparatus is the linear CCD detecting device with element pixel, and the software that computing machine uses is 32 commercially available OOIBAS softwares.
Embodiment 2
Present embodiment also is the portable element spectrometer that is used for the online detection of fluid sample that is prepared by the plasma atomizer that the utility model provides; Its structure and embodiment 1 are basic identical; Different is that plasma atomization system is provided with electronic semi-conductor's cooling piece 6 at the outer pipe shell shell wall of plasma torch pipe; Keep at plasma and to be designed with plasma on the gas conveying annular pipeline and to keep gas distributor 14; Be designed with 8 air holes that are uniformly distributed with on the distributor annular disk, on plasma torch pipe inner tubal wall, be designed with 3 equalizing ports 15, with the inside and outside hydrodynamic pressure of pipe in the balance.
Embodiment 3
Present embodiment is the portable element spectrometer that is used for the online detection of gaseous sample that is prepared by the plasma atomizer that the utility model provides, its structure and basic identical with embodiment 1, and different is the sample drawing-in system.The structure of drawing-in system is shown in accompanying drawing 2.Gaseous sample to be measured directly is sent to the interior pipe of plasma torch pipe by air pump; Plasma is kept gas introducing subsystem and still is provided with two introducing branch roads; The meter 17 of leading up to is incorporated the gas testing sample into and is introduced subsystem; The deficiency of make-up gas sample size, another road are kept the conduit entrance of gas conveying annular through meter 16 and the plasma in the plasma torch pipe and are connected, and keep gas for plasma provides.
Embodiment 4
Present embodiment also is the portable element spectrometer that is used for the online detection of gaseous sample that is prepared by the plasma atomizer that the utility model provides; The structure and the embodiment 2 of its plasma atomization system are basic identical, and the structure of its sample drawing-in system and embodiment 3 are basic identical.
Claims (10)
1. plasma atomizer that is applicable to portable element spectrometer; Comprise plasma torch pipe, microwave energy bringing device, plasma initiating device; It is characterized in that being designed with plasma torch equalization chamber; Said plasma torch pipe by pipe in the sample delivery, it is coaxial that to be nested with outside interior pipe material be that the middle pipe and the coaxial outer pipe shell that is nested with outside middle pipe of conducting metal constitutes; Perimetrical lumen between the interior Guan Yuzhong pipe is that plasma is kept the letter shoot road; Said microwave energy bringing device is made up of with the antenna that is connected with microwave source through the microwave transmission lead microwave source, and tube wall was outer near the exit during antenna was arranged on, and said plasma initiating device connects the plasma torch district through lead; Said torch equalization chamber is arranged on the plasma torch pipe port, and locular wall is designed with outlet port and is used to be provided with the window as the light collecting device of a spectral measurement disposal system part.
2. the plasma atomizer that is applicable to portable element spectrometer according to claim 1 is characterized in that the locular wall of torch equalization chamber is arranged on the trough place of microwave propagation direction, and chamber radial dimension and axial dimension all are not more than 5 wavelength.
3. the plasma atomizer that is applicable to portable element spectrometer according to claim 2; It is characterized in that being designed with the toxic emission chamber in torch equalization chamber over top; Torch equalization chamber is communicated with the toxic emission chamber through the through hole that is positioned at the center of top place, and outlet port designs on the sidewall of drain chamber.
4. sidewall faces the scope of plasma torch in the torch chamber for the plasma atomizer that is applicable to portable element spectrometer according to claim 2, the window design that it is characterized in that being used to being provided with spectral measurement disposal system light collecting device.
5. according to the described plasma atomizer that is applicable to portable element spectrometer of one of claim 1 to 4; It is characterized in that being provided with the microwave reflection mirror, be positioned at the odd-multiple position of microwave 1/4 wavelength, microwave antenna below at the middle pipe of plasma torch pipe and the annular space between the outer pipe shell.
6. the plasma atomizer that is applicable to portable element spectrometer according to claim 5 is characterized in that the microwave reflection mirror can move up and down the annular space that is arranged between interior pipe and the outer pipe shell with regulating.
7. according to the described plasma atomizer that is applicable to portable element spectrometer of one of claim 1 to 4, it is characterized in that the outer pipe shell housing wall of plasma torch pipe is provided with electronic semi-conductor's cooling piece.
8. according to the described plasma atomizer that is applicable to portable element spectrometer of one of claim 1 to 4, it is characterized in that in the middle pipe of plasma torch pipe and the perimetrical lumen between the interior pipe, being provided with at least one plasma that is evenly equipped with some through holes keeps the gas distributor.
9. according to the described plasma atomizer that is applicable to portable element spectrometer of one of claim 1 to 4, it is characterized in that being designed with the equalizing port that at least one is used for the inside and outside gaseous tension of balance pipe on the tube wall of plasma torch tube-in-tube.
10. according to the described plasma atomizer that is applicable to portable element spectrometer of one of claim 1 to 4, it is characterized in that the length of plasma torch pipe is the odd of microwave 1/4 wavelength, and be not more than 200cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120246439U CN202133616U (en) | 2011-07-13 | 2011-07-13 | Plasma atomizer applicable to portable element spectrograph |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120246439U CN202133616U (en) | 2011-07-13 | 2011-07-13 | Plasma atomizer applicable to portable element spectrograph |
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| CN202133616U true CN202133616U (en) | 2012-02-01 |
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| CN201120246439U Expired - Lifetime CN202133616U (en) | 2011-07-13 | 2011-07-13 | Plasma atomizer applicable to portable element spectrograph |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103913224A (en) * | 2013-01-06 | 2014-07-09 | 北京瑞利分析仪器有限公司 | Multi-dimensional adjusting mechanism for atomizer of portable atomic absorption spectrometer |
| CN103983620A (en) * | 2013-02-07 | 2014-08-13 | 北京瑞利分析仪器有限公司 | Closed type atomization system |
| CN106304602A (en) * | 2016-09-26 | 2017-01-04 | 吉林大学 | A kind of microwave coupling plasma resonant |
| CN107991289A (en) * | 2017-11-17 | 2018-05-04 | 浙江全世科技有限公司 | A kind of plasma height adjuster and method |
| CN114845454A (en) * | 2022-03-24 | 2022-08-02 | 吉林大学 | Microwave coupling plasma and high-temperature flame fusion excitation source |
-
2011
- 2011-07-13 CN CN201120246439U patent/CN202133616U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103913224A (en) * | 2013-01-06 | 2014-07-09 | 北京瑞利分析仪器有限公司 | Multi-dimensional adjusting mechanism for atomizer of portable atomic absorption spectrometer |
| CN103913224B (en) * | 2013-01-06 | 2016-06-22 | 北京瑞利分析仪器有限公司 | The atomizer multidimensional governor motion of portable Atomic Absorption Spectrometer |
| CN103983620A (en) * | 2013-02-07 | 2014-08-13 | 北京瑞利分析仪器有限公司 | Closed type atomization system |
| CN106304602A (en) * | 2016-09-26 | 2017-01-04 | 吉林大学 | A kind of microwave coupling plasma resonant |
| CN106304602B (en) * | 2016-09-26 | 2018-07-20 | 吉林大学 | A kind of microwave coupling plasma resonant |
| CN107991289A (en) * | 2017-11-17 | 2018-05-04 | 浙江全世科技有限公司 | A kind of plasma height adjuster and method |
| CN114845454A (en) * | 2022-03-24 | 2022-08-02 | 吉林大学 | Microwave coupling plasma and high-temperature flame fusion excitation source |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170320 Address after: 610000 Wuhou District North Road, Sichuan, Chengdu No. 65 KELONG Patentee after: Ai Li Chengdu science and Technology Co., Ltd. Address before: Shuangliu County Sichuan Road Chengdu City, Sichuan province 610064 2 No. 2 Patentee before: Duan Yixiang |
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| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120201 |
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| CX01 | Expiry of patent term |