CN203728971U - Static nanofiber generator - Google Patents
Static nanofiber generator Download PDFInfo
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- CN203728971U CN203728971U CN201420054406.3U CN201420054406U CN203728971U CN 203728971 U CN203728971 U CN 203728971U CN 201420054406 U CN201420054406 U CN 201420054406U CN 203728971 U CN203728971 U CN 203728971U
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- spinning head
- electrostatic spinning
- liquid
- liquid feed
- feed device
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Abstract
The utility model relates to a static nanofiber generator which comprises a liquid supplying device, a washing device, a collecting device, a power source generator, blades of a static spinning head, a driving device, a transmission device and a cleaning doctor blade. The transmission device and the liquid supplying device are connected with the blades of the static spinning head, and the transmission device enables the liquid supplying device and the blades of the static spinning head to simultaneously move. By means of the static nanofiber generator, spinning liquid can be continuously conveyed to a spinning generator in a closed body, and the problems that in the using process of an opened-type liquid supplying device, the solution concentration is changed due to solvent evaporation, the fiber quality is accordingly changed, the spinning efficiency is reduced, and processes are terminated are solved. The static nanofiber generator has the function of washing a liquid supplying nozzle and a screw rod, and continuous and normal operation is guaranteed. A heating device is arranged on the liquid supplying device, temperature control operation can be achieved, solidification of the solution before spraying is prevented, the static nanofiber generator is suitable for low-solidifying-point solution materials, and the production efficiency is improved.
Description
Technical field
The utility model relates to a kind of static nanofiber generator, be specifically related to a kind of can be at sealing in the situation that continuous liquid supply, there is the function of cleaning liquid feed device and spinneret simultaneously, can effectively volatility spinning solution be transferred on spinneret, and avoided solution evaporation to cause that fiber quality changes or spinning process stops, and can regulator solution temperature.Mainly be applicable to freezing point lowlyer, or the higher fluid of volatility, efficiently and be in large quantities processed into nanofiber.
Background technology
In order to improve spinning efficiency, needleless electrostatic spinning nano fiber production technology starts to occur recently.The spinneret of these needleless electrostatic spinning apparatus is all in open type liquid feed device, to carry out work mostly.For example Chinese utility model patent ZL201320071914.8, provides a kind of spiral nano-fibre generator.When most of needleless electrostatic spinning static nanofiber generator work, blade is loaded into solution the surface of blade equably along the rotation meeting of axle, in the time that blade is coupled with DC high-voltage, the solution that is loaded into blade surface can generate nanofiber under the effect of electrostatic field.But owing to filling the liquid container that stores up this viscous liquid that is used for spinning in open state, in the time that the nanofiber generator with such is processed more high-volatile solution materials, such as the solution that contains acetone, solvent is volatilization rapidly in the solution tank open, so not only causing solvent excessively to volatilize wastes resource pollution environment, and because the too fast volatilization of solvent causes polymer viscosity variable effect spinning quality.Too much high volatile volatile solvent runs into electrion and can produce as on fire, blast etc. under an encapsulation situations.Unsafe factor.Therefore solution is placed in the liquid bath of sealing, is coated on spinneret blade surface and can effectively controls the volatilization of solvent by infusion hole by demand, avoid or reduce the generation of above-mentioned situation.Clean infusion port by Butterworth Hatch jet cleaning liquid simultaneously, avoid infusion port to stop up; Cleared up solid solution residual on blade by scraping blade, kept the mobility of solution by heater, these measures can effectively ensure the normal work of this needleless electrospinning device.
Therefore the utility model is in order to address the above problem, and makes that production process is more efficient, environmental protection and safety.
Utility model content
The purpose of this utility model is, a kind of static nanofiber generator is provided, be a kind of new needleless static nanofiber generating means, be mainly used in processing the solution material and the subzero solution material that contain volatile solvent and carry out electrostatic spinning nano fiber, enhance productivity.
The technical problem of the required solution of the utility model, can be achieved through the following technical solutions:
A kind of static nanofiber generator, comprise: electrostatic spinning head, it is characterized in that, also comprise: liquid feed device, cleaning device, gathering-device, power source generator, drive unit and transmission device, described transmission device is connected with liquid feed device and electrostatic spinning head, and described transmission device makes liquid feed device and the equidirectional movement simultaneously of electrostatic spinning head.
Wherein, described liquid feed device can be placed in the left of electrostatic spinning head lobe sheet, right-hand and below; Described liquid feed device is sealed body structure, be provided with infusion hole and inlet, the fluid direction of described infusion hole is aimed at electrostatic spinning head, solution is delivered on the blade of electrostatic spinning head, one end of described inlet is connected with liquid container, and the described inlet other end is connected with infusion hole.
Wherein, described cleaning device arranges clean-out opening, and the fluid direction of described clean-out opening is aimed at infusion hole, by cleaner with injection liquid, infusion hole is cleared up, and avoids infusion hole to stop up.
Wherein, described electrostatic spinning head touches with cleaning scraping blade, and described cleaning scraping blade is located at infusion hole two ends, and described cleaning scraping blade is removed the solid residue on electrostatic spinning head in time, prevents that electrostatic spinning head lobe sheet from being covered and affecting spinning by liquid residue.
Wherein, in described liquid feed device, heater is set, by heater regulator solution temperature, avoids solution solidifies; Described heater comprises: heating tube, transfer tube and heater, and heating tube is connected with transfer tube, and the transfer tube other end is connected with heater, makes heat conduct to liquid feed device by the heating of the liquid to transfer tube or gas.
Because heater is located in liquid feed device, can pass through heater regulator solution temperature.Further, described heating tube is screw type, snakelike or linear pattern.Preferably screw type.
Wherein, described drive unit is arranged at liquid feed device periphery, the projection interlock of the groove of liquid feed device and electrostatic spinning head lobe sheet, drive unit drives liquid feed device moving belt sound Electrospun head to do rotation in the same way, or described drive unit is connected with electrostatic spinning head, the projection of electrostatic spinning head lobe sheet and the groove interlock of liquid feed device, drive unit drives the rotation of electrostatic spinning head to drive liquid feed device to do equidirectional movement again.
Wherein, described drive unit adopts linear electric motors or adopts electric rotating machine, and described transmission device adopts screw drive or slide bar gear drive.
Wherein, described gathering-device is metal material, and described gathering-device is connected with the negative pole of power source generator; Described electrostatic spinning head is connected with the positive pole of power source generator, and described electrostatic spinning head can clockwise or rotate counterclockwise; Described electrostatic spinning head is connected with transmission device, can drive mutually the other side to move.
Wherein, described liquid feed device is connected with liquid container, and described liquid container comprises: feed pipe, liquid raising device, solution chamber, solvent compartment and central control system;
Described feed pipe comprises solution suction pipe and solvent suction pipe, described solution chamber is connected with liquid raising device by solution suction pipe, described solvent compartment is connected with liquid raising device by solvent suction pipe, described liquid raising device is transferred to infusion hole by solution by solution suction pipe, described liquid raising device is transferred to clean-out opening by solvent by solvent suction pipe, described liquid raising device is connected with central control system, to reach the control to feed flow flow pressure.
The beneficial effects of the utility model:
1, adopt coating feed by infusion hole, can effectively avoid solvent evaporation in solution, reduce the pollution to environment, reduce costs and improve the quality of products.
2, can clear up infusion port at any time by lancing door, avoid infusion hole to stop up, affect production and processing.
3, be designed with cleaning scraping blade, can clear up the solution of residual one-tenth solid on electrostatic spinning head, carry out recycling by gathering-device.
4, in liquid feed device, be provided with heater, can regulate solution temperature, avoid some subzero solution to affect production and processing because variations in temperature becomes solid in process.
Brief description of the drawings
Fig. 1 is overall structure figure of the present utility model.
Fig. 2 is the liquid-container structure figure of the utility model embodiment 1.
Fig. 3 is main TV structure figure of the present utility model.
Fig. 4 is plan structure figure of the present utility model.
Fig. 5 A is drive unit structure chart while being installed on liquid feed device.
Fig. 5 B is drive unit structure chart while being connected with electrostatic spinning head.
Fig. 5 C is drive unit structure chart while being connected with transmission device.
Fig. 6 is the heater structure chart of the utility model embodiment 1.
Reference numeral:
Liquid feed device 100, infusion hole 110, spreader 130 and coating hole 131.
Cleaning device 200, clean-out opening 220 and solvent shower nozzle 221.
Heater 140, heating tube 141, transfer tube 142 and heater 143.
Gathering-device 300, power source generator 400 and electrostatic spinning head 500.
Liquid container 600, feed pipe 610, solution suction pipe 611, solvent suction pipe 612, liquid raising device 620, solution chamber 630, solvent compartment 640 and central control system 650.
Drive unit 700, linear electric motors.
Transmission device 800, pulley 810 and screw rod 820.Cleaning scraping blade 900.
Detailed description of the invention
Below in conjunction with specific embodiment, the utility model is done to progressive explanation.Should be understood that following examples are only for the utility model is described but not for limiting scope of the present utility model.
Embodiment 1
Fig. 1 is overall structure figure of the present utility model.Fig. 2 is the liquid-container structure figure of the utility model embodiment 1.Fig. 3 is main TV structure figure of the present utility model.Fig. 4 is plan structure figure of the present utility model.Fig. 5 A is drive unit structure chart while being installed on liquid feed device.Fig. 5 B is drive unit structure chart while being connected with electrostatic spinning head.Fig. 5 C is drive unit structure chart while being connected with transmission device.Fig. 6 is the heater structure chart of the utility model embodiment 1.
As shown in Figure 1, a kind of static nanofiber generator, comprises electrostatic spinning head 500, comprising: liquid feed device 100, transmission device 800, gathering-device 300, power source generator 400 and drive unit 700.
Liquid feed device 100 is connected with liquid container 600, and liquid solution is stored in liquid container 600.
As shown in Figure 2, liquid feed device 100 is connected with liquid container 600, wherein liquid container 600 comprises: feed pipe 610, liquid raising device 620, solution chamber 630, solvent compartment 640 and central control system 650, and spinning solution is equipped with in solution chamber 630, and cleaning solvent is equipped with in solvent compartment 640.
Feed pipe 610 comprises solution suction pipe 611 and solvent suction pipe 612, solution chamber 630 is connected with liquid raising device 620 by solution suction pipe 611, liquid raising device 620 is transferred to infusion hole 110 by solution by solution suction pipe 611, then utilizes liquid level difference, makes solution pass through infusion hole 110 and flows out.
Solvent compartment 640 is connected with liquid raising device 620 by solvent suction pipe 612, and liquid raising device 620 is transferred to clean-out opening 220 by solvent by solvent suction pipe 612, then utilizes liquid level difference, makes solvent pass through clean-out opening hole 220 and flows out.
Liquid raising device 620 is also connected with the central control system 650 of controlling liquid supply speed.In the present embodiment, what liquid feed device 100 adopted is electronic pump, and liquid raising device 620 also can replace by mechanical pump.
Electrostatic spinning head 500 can be spiral spinneret, can be also spring spinneret, in the present embodiment, be adopt be spiral spinneret.Electrostatic spinning head 500 is connected with the positive pole of power source generator 400, electrostatic spinning head 500 can be clockwise or inverse clock rotate, gathering-device 300 is connected with the negative pole of power source generator 400, produces an electric field by power source generator 400.
Electrostatic spinning head 500 is by clockwise or be rotated counterclockwise the solution that liquid feed device 100 is sprayed and be loaded into the surface of the rotational structure of electrostatic spinning head 500.When the blade rotation that is loaded with solution is during to top, in the effect of electric field, solution is spun into nanofiber, and deposits on gathering-device 300, gathering-device 300 is metal material, gathering-device 300 is connected with the negative pole of power source generator 400.Wherein the blade of electrostatic spinning head 500 can be designed to geometry.Cross section can be other shapes such as circle, ellipse, rectangle.The solute that gathering-device 300 is cleared up for receiving cleaning blade 900.
As shown in Figure 3 and Figure 4, transmission device 800 is connected with liquid feed device 100 and electrostatic spinning head 500, and transmission device 800 makes liquid feed device 100 and 500 transmissions simultaneously of electrostatic spinning head.
Transmission device 800 is made up of pulley 810 and screw rod 820, by the rotation of screw rod 820, liquid feed device is moved left and right, and carries out position adjustment by pulley 810.And the form of transmission device 800 is not limited to screw drive, he can also be slide bar transmission.Electrostatic spinning head 500 is also connected with transmission device 800, therefore in the time that transmission device 800 moves, transmission device 800 can drive liquid feed device 100 rectilinear movements and electrostatic spinning head 500 to rotate simultaneously, electrostatic spinning head 500 is screw type spinnerets, liquid feed device 100 is to contact interconnection system with electrostatic spinning head 500, and what liquid feed device 100 adopted is screw drive, if electrostatic spinning head 500 drives like this, will drive liquid feed device 100 front and back repeatedly to move, vice versa, by liquid feed device 100 is driven, electrostatic spinning head 500 also can move thereupon, can ensure liquid feed device 100 and electrostatic spinning head 500 synchronisms.
As shown in Fig. 5 A, Fig. 5 B and Fig. 5 C, drive unit 700 is located at liquid feed device 100 peripheries, the projection interlock of the groove of liquid feed device 100 and electrostatic spinning head 500 blades, drive unit 700 drives liquid feed device 100 to drive electrostatic spinning head 500 to do equidirectional movement again, in embodiment 1, the motor that drive unit 700 adopts drives.By linear electric motors being installed on liquid feed device 100, make liquid feed device 100 can make rectilinear movement, thereby drive electrostatic spinning head 500, drive unit 700 can adopt linear electric motors.
Drive unit 700 can also be connected with electrostatic spinning head 500, by slide bar or other type of drive, form annexation with electrostatic spinning head 500, the projection of electrostatic spinning head 500 blades and the groove interlock of liquid feed device 100, drive unit 700 drives electrostatic spinning head 500 to drive liquid feed device 100 to do equidirectional movement again.Drive unit 700 can adopt electric rotating machine.
Liquid feed device 100 comprises: infusion hole 110, inlet 120, clean-out opening 220, cleaning scraping blade 900 and heater 140, and liquid feed device can be placed in the left of electrostatic spinning head 500 blades, right-hand and below, and wherein preferred embodiment is to be positioned at below; The fluid direction of infusion hole 110 is aimed at electrostatic spinning head 500, solution is delivered on the blade of electrostatic spinning head 500, and one end of inlet 120 is connected with liquid container 600, and inlet 120 other ends are connected with infusion hole 110.The fluid direction of clean-out opening 220 is aimed at infusion hole 110, cleaning scraping blade 900 is connected with liquid feed device 100, can remove in time the solid residue on electrostatic spinning head 500, prevent that electrostatic spinning head 500 from cannot conduct electricity, heater 140 is located in liquid feed device 100, can pass through heater 140 regulator solution temperature.
Infusion hole 110 is provided with spreader 130, and spreader 130 is provided with coating hole 131, and spreader 130 is a kind of special nozzle that design for electrostatic spinning, and object is in order more uniformly solution to be coated on the blade of electrostatic spinning head 500.Wherein, coating hole 131 quantity can be single can be also a plurality of, in the present embodiment, spreader 130 and infusion hole 110 are to removably connect, can need to change spreader 130 according to different, what spreader 130 in the present embodiment adopted is single hole spreader 130, be coated with hole 131 for single, and the shape in coating hole 131 is also not limited only to circle, can adopt the design such as square, rhombus according to the characteristic of different solutions.Meanwhile, spreader 130 is with the blade pitch of electrostatic spinning head 500 from regulating, and infusion hole 110 can be a plurality of, can be also single, is single design in the present embodiment.
Clean-out opening 220 is provided with solvent shower nozzle 221, and the quantity of solvent shower nozzle 221 can be single, can be also a plurality of, is two solvent shower nozzles 221 in the present embodiment.The position of infusion hole 110 is arranged at infusion hole 110 both sides, and the fluid direction of solvent shower nozzle 221 is the position at spreader 130 places, and clean-out opening 220 can be cleaned solvent accurately to the solution adhering on spreader 130.
Cleaning scraping blade 900 is located at liquid feed device 100 belows, distance between cleaning scraping blade 900 and the blade of electrostatic spinning head 500 can regulate, cleaning scraping blade 900 can be cleared up the dry and hard thing of the solution adhering on the blade of electrostatic spinning head 500, can ensure constantly that blade normally moves.
As shown in Figure 6, heater 140 is located at liquid feed device 100 inside, and its Main Function is regulator solution temperature on request.In actual production process, the control of solution temperature is very important, if the freezing point of solution is very low, so at normal temperatures, just probably at the interior caking of liquid feed device 100, not only cannot normally carry out transfusion work, also likely stops up infusion hole 110.Heater 140 can adopt the various ways such as electrical heating, chemical heat, liquid heating, adopts liquid heating in the present embodiment.Heater 140 comprises: heating tube 141, transfer tube 142 and heater 143.Heating tube 141 is located at liquid feed device 100 inside, can be screw type, can be snakelike can be also linear pattern etc., the present embodiment adopt be spiral setting.Heating tube 141 is connected with transfer tube 142, the transfer tube other end is connected with heater 143, make heat conduct to liquid feed device 100 by the heating of the liquid to transfer tube 142, then by the temperature that regulates heating tube 141 interior liquid, the solution in liquid feed device 100 is carried out to temperature adjusting.
Embodiment 2
The quantity in coating hole 131 can be a plurality of, in the present embodiment, spreader 130 and infusion hole 110 are to removably connect, can need to change spreader 130 according to different, what spreader 130 in the present embodiment adopted is three hole spreaders 130, being coated with hole 131 is three, and is coated with the square that is shaped as in hole 131.Meanwhile, spreader 130 is with the blade pitch of electrostatic spinning head 500 from regulating, and infusion hole 110 can be a plurality of, is three designs (accompanying drawing does not illustrate) in the present embodiment.
All the other are with embodiment 1.
Embodiment 1 relatively, the present embodiment can be coated with by multiple spot, is coated with more even.Transfusion is cleaned more thorough.
Above detailed description of the invention of the present utility model is illustrated, but the utility model is as limit, only otherwise depart from aim of the present utility model, the utility model can also have various variations.
Claims (9)
1. a static nanofiber generator, comprising: electrostatic spinning head (500), it is characterized in that, and also comprise:
Liquid feed device (100), cleaning device (200), gathering-device (300), power source generator (400), drive unit (700) and transmission device (800), described transmission device (800) is connected with liquid feed device (100) and electrostatic spinning head (500), and described transmission device (800) makes liquid feed device (100) and electrostatic spinning head (500) equidirectional movement simultaneously.
2. a kind of static nanofiber generator according to claim 1, is characterized in that: described liquid feed device can be placed in the left of electrostatic spinning head (500) blade, right-hand and below; Described liquid feed device (100) is sealed body structure, be provided with infusion hole (110) and inlet (120), the fluid direction of described infusion hole (110) is aimed at electrostatic spinning head (500), solution is delivered on the blade of electrostatic spinning head (500), one end of described inlet (120) is connected with liquid container (600), and described inlet (120) other end is connected with infusion hole (110).
3. a kind of static nanofiber generator according to claim 1, it is characterized in that: described cleaning device (200) arranges clean-out opening (220), the fluid direction of described clean-out opening (220) is aimed at infusion hole (110), by cleaner with injection liquid, infusion hole (110) is cleared up, avoided infusion hole (110) to stop up.
4. a kind of static nanofiber generator according to claim 1, it is characterized in that: the blade of described electrostatic spinning head (500) touches with cleaning scraping blade (900), described cleaning scraping blade (900) is located at infusion hole (110) two ends, and described cleaning scraping blade (900) is removed the solid residue on electrostatic spinning head (500) in time.
5. a kind of static nanofiber generator according to claim 1, is characterized in that: in described liquid feed device, heater is set, by heater (140) regulator solution temperature, avoids solution solidifies; Described heater (140) comprising: heating tube (141), transfer tube (142) and heater (143) heating tube (141) are connected with transfer tube (142), the transfer tube other end is connected with heater (143), makes heat conduct to liquid feed device (100) by the heating of the liquids and gases to transfer tube (142).
6. a kind of static nanofiber generator according to claim 1, it is characterized in that: described drive unit (700) is arranged at liquid feed device (100) periphery, the projection interlock of the groove of liquid feed device (100) and electrostatic spinning head (500) blade, drive unit (700) drives liquid feed device (100) moving belt sound Electrospun head (500) to do rotation in the same way, or described drive unit (700) is connected with electrostatic spinning head (500), the projection of electrostatic spinning head (500) blade and the groove interlock of liquid feed device (100), drive unit (700) drives electrostatic spinning head (500) rotation to drive liquid feed device (100) to do equidirectional movement again.
7. a kind of static nanofiber generator according to claim 1, it is characterized in that: described drive unit (700) adopts linear electric motors or adopts electric rotating machine, and described transmission device (800) adopts screw drive or slide bar gear drive.
8. a kind of static nanofiber generator according to claim 1, is characterized in that: described gathering-device (300) is metal material, and described gathering-device (300) is connected with the negative pole of power source generator (400);
Described electrostatic spinning head (500) is connected with the positive pole of power source generator (400), and described electrostatic spinning head (500) can clockwise or rotate counterclockwise; Described electrostatic spinning head (500) is connected with transmission device (800), can drive mutually the other side to move.
9. a kind of static nanofiber generator according to claim 1, it is characterized in that: described liquid feed device (100) is connected with liquid container (600), and described liquid container (600) comprising: feed pipe (610), liquid raising device (620), solution chamber (630), solvent compartment (640) and central control system (650);
Described feed pipe (610) comprises solution suction pipe (611) and solvent suction pipe (612), described solution chamber (630) is connected with liquid raising device (620) by solution suction pipe (611), described solvent compartment (640) is connected with liquid raising device (620) by solvent suction pipe (612), described liquid raising device (620) is transferred to infusion hole (110) by solution by solution suction pipe (611), described liquid raising device (620) is transferred to clean-out opening (220) by solvent by solvent suction pipe (612), described liquid raising device (620) is also connected with the central control system (650) of controlling liquid supply speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420054406.3U CN203728971U (en) | 2014-01-27 | 2014-01-27 | Static nanofiber generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420054406.3U CN203728971U (en) | 2014-01-27 | 2014-01-27 | Static nanofiber generator |
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| Publication Number | Publication Date |
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| CN203728971U true CN203728971U (en) | 2014-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420054406.3U Expired - Fee Related CN203728971U (en) | 2014-01-27 | 2014-01-27 | Static nanofiber generator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103774250A (en) * | 2014-01-27 | 2014-05-07 | 上海云同纳米科技中心(普通合伙) | Electrostatic nanofiber generator |
| CN104120499A (en) * | 2014-07-25 | 2014-10-29 | 北京化工大学 | Hairbrush feeding type needle-free electrostatic spinning device and method |
| CN107313118A (en) * | 2017-07-25 | 2017-11-03 | 苏州大学 | It is constant to continue liquid feed device |
-
2014
- 2014-01-27 CN CN201420054406.3U patent/CN203728971U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103774250A (en) * | 2014-01-27 | 2014-05-07 | 上海云同纳米科技中心(普通合伙) | Electrostatic nanofiber generator |
| CN104120499A (en) * | 2014-07-25 | 2014-10-29 | 北京化工大学 | Hairbrush feeding type needle-free electrostatic spinning device and method |
| CN104120499B (en) * | 2014-07-25 | 2016-06-01 | 北京化工大学 | A kind of hairbrush feeding type is without pin electrostatic spinning apparatus and method |
| CN107313118A (en) * | 2017-07-25 | 2017-11-03 | 苏州大学 | It is constant to continue liquid feed device |
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Owner name: SHANGHAI YUNTONG NANO MATERIAL TECHNOLOGY CO., LTD Free format text: FORMER OWNER: SHANGHAI YUNTONG NANO TECHNOLOGY CENTER (GENERAL PARTNERSHIP) Effective date: 20150727 |
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| TR01 | Transfer of patent right |
Effective date of registration: 20150727 Address after: 201201 Shanghai Guo Shou Jing Road, Zhangjiang Science Park No. 351 Building No. 2 room A654-01 Patentee after: Shanghai Yuntong Nano Materials Technology Co., Ltd. Address before: 202178 No. 10, 258 Changjiang street, Changjiang Farm, Chongming County, Shanghai, 2052 Patentee before: SHANGHAI YUNTONG NANO TECHNOLOGY CENTER |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140723 Termination date: 20190127 |
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| CF01 | Termination of patent right due to non-payment of annual fee |