CN207614814U - Remove the device of colloidal sol intermediate ion - Google Patents
Remove the device of colloidal sol intermediate ion Download PDFInfo
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- CN207614814U CN207614814U CN201721466374.8U CN201721466374U CN207614814U CN 207614814 U CN207614814 U CN 207614814U CN 201721466374 U CN201721466374 U CN 201721466374U CN 207614814 U CN207614814 U CN 207614814U
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- Prior art keywords
- warehouse
- accommodating chamber
- colloidal sol
- intermediate ion
- liquid
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Abstract
The utility model provides a kind of device of removal colloidal sol intermediate ion, wherein the device of removal colloidal sol intermediate ion includes：First warehouse, the first accommodating chamber for accommodating liquid is formed with inside the first warehouse, and the first warehouse is equipped with the liquid outlet of the inlet communicated with the first accommodating chamber and discharge liquid；Second warehouse, second warehouse is arranged in the first accommodating chamber of the first warehouse, the second accommodating chamber for accommodating liquid is formed with inside second warehouse, the side wall of the second warehouse is equipped with filter membrane, and the liquid ions under electric field action in the second accommodating chamber can pass through filter membrane to enter in the first accommodating chamber；Positive and negative electrode, positive and negative electrode are separately mounted in the first warehouse, and one end of positive and negative electrode is stretched into the first accommodating chamber of the first warehouse and the other end with DC power supply for connecting.The device of removal colloidal sol intermediate ion according to the present utility model, can remove effectively the foreign ion in oxide sol, and process cycle is shorter, reproducible, at low cost.
Description
Technical field
The utility model is related to technical field of material, more particularly, to a kind of device of removal colloidal sol intermediate ion.
Background technology
Porous nanometer material such as silica, titanium oxide, zirconium oxide etc., it is heat-insulated, keep the temperature and urge due to having a good insulation
The superior functions such as change, always are the hot spot of research.Mostly using sol-gal process prepares various porous nanometer materials at present, is
Saving cost, can contain when using inorganic salts as presoma, in the colloidal sol of preparation there are many aqueous impurities ion, as sodium from
The presence of son, chlorion, potassium ion etc., these inorganic ions has a great impact to the performance of prepared porous material, often
The minimizing technology of rule is that above-mentioned colloidal sol is carried out multiple exchange processing using amberplex.However, purifying in this way
When, it is not only time-consuming longer, so that entire manufacturing cycle is significantly increased and is difficult to ensure that impurity ion content is reduced to suitable model
In enclosing, the ion exchange resin price used during this is costly and Repeatability is poor, and service efficiency is low, is not suitable for big rule
Mould uses.
Application No. is 200810121218.8, a kind of entitled " the removal side of water-solubility impurity ion in nano-oxide
Nano-oxide dispersion liquid is placed on the diaphragm side with agitation by the Chinese utility model application of method ", and the other side of diaphragm is put
There is the deionized water with ion exchange resin, the water-solubility impurity ion of diaphragm is constantly will transmit through using ion exchange resin
It removes, treated nano-oxide, the content of water-solubility impurity ion is less than 0.001%.Although adopting this method raising
Efficiency, but process cycle is still relatively long, poor repeatability, is not suitable for a wide range of use.
Application No. is 201310738614.5, in entitled " method of contaminated ion in removal water body or porous media "
State's utility model application discloses a kind of method removing contaminated ion in water body or porous media, using two super capacitors
Electrode be positive and negative anodes, using porous media or water body as electrolyte, using the negative and positive in electrode adsorption porous media or water body from
Son is realized by taking out electrode and discharging by the purpose of ion remaval.The efficiency of this method is higher, but its clean-up effect relies on
In used electrode, it is electrically operated to be repeated charge and discharge, and poor controllability.
On the other hand, foreign particle is often introduced by aerogel material when using inorganic salts as presoma
In obtained aeroge, so as to get material property decline, in order to avoid this phenomenon, usually using at ion exchange resin
Several days are managed with the foreign ion in removing system, but this method keeps entire manufacturing cycle elongated and increases cost, reduces
Efficiency.Therefore, be urgently desirable to develop it is a kind of foreign ion in colloidal sol can be made quickly to remove, and it is at low cost, it is efficient
Method.
Utility model content
In view of this, the utility model provides a kind of device of removal colloidal sol intermediate ion.
In order to solve the above technical problems, the utility model uses following technical scheme：
Device according to the removal colloidal sol intermediate ion of the utility model first aspect embodiment includes：
First warehouse, the first accommodating chamber for accommodating liquid is formed with inside first warehouse, and first warehouse is equipped with
The liquid outlet of the inlet and discharge liquid that are communicated with first accommodating chamber；
Second warehouse, second warehouse is arranged in first accommodating chamber of the first warehouse, in second warehouse
Portion is formed with the second accommodating chamber for accommodating liquid, and the side wall of second warehouse is equipped with filter membrane, described second under electric field action
Liquid ions in accommodating chamber can pass through the filter membrane to enter in first accommodating chamber；
Positive and negative electrode, the positive and negative electrode are separately mounted in first warehouse, and one end of the positive and negative electrode is stretched into
In first accommodating chamber of first warehouse and the other end with DC power supply for connecting.
Preferably, the filter membrane is made of polymer chemistry synthetic material or natural macromolecular material.
Preferably, the filter membrane has the aperture of predetermined size.
Preferably, the filter membrane be arranged second warehouse side wall with the electrode opposite position at.
Preferably, first warehouse is internally provided with the support plate for being used to support second warehouse, and the support plate will
First accommodating chamber is divided into upper chamber and lower chambers, the support plate be equipped with through-hole be connected to the upper chamber and it is described under
Chamber.
Preferably, the device of the removal colloidal sol intermediate ion further includes agitating device, and the agitating device is arranged described
The bottom chamber of first accommodating chamber.
Preferably, first warehouse is equipped with upper cover, and the upper cover is for sealing the inlet.
Preferably, the upper lid is equipped with the breather valve that can be opened and closed.
Preferably, second warehouse and the first warehouse size are 20%-80%.
Further, second warehouse and the first warehouse size are 45%-65%.
Preferably, first warehouse and second warehouse are made of insulating materials.
Further, the insulating materials includes ceramics, plastics or glass.
Preferably, the positive and negative electrode is graphite electrode.
The above-mentioned technical proposal of the utility model has the beneficial effect that：
According to the utility model embodiment removal colloidal sol intermediate ion device, by be arranged the first warehouse, the second warehouse,
The connection structure of positive and negative electrode and each component can simply and effectively remove the foreign ion in oxide sol, and locate
The reason period is shorter, reproducible, at low cost.Foreign ion in aerogel material preparation process can be not only removed, but also is overcome
The shortcomings that conventional method is of high cost, and time-consuming, can adapt to the large-scale industrial production of aerogel material.
Description of the drawings
Fig. 1 is the structural schematic diagram of the device of the removal colloidal sol intermediate ion of the utility model embodiment.
Reference numeral：
Remove the device 100 of colloidal sol intermediate ion；
First warehouse 10；Inlet 11；Liquid outlet 12；First accommodating chamber 13；Upper chamber 131；Lower chambers 132；Upper cover 14；
Breather valve 141；
Second warehouse 20；Second accommodating chamber 21；Filter membrane 22；
Positive and negative electrode 30；
Support plate 40；
Agitating device 50.
Specific implementation mode
It is new below in conjunction with this practicality to keep the purpose, technical scheme and advantage of the utility model embodiment clearer
The technical solution of the utility model embodiment is clearly and completely described in the attached drawing of type embodiment.Obviously, described
Embodiment is a part of the embodiment of the utility model, instead of all the embodiments.Based on described the utility model
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained, shall fall within the protection scope of the present invention.
The device of the removal colloidal sol intermediate ion according to the utility model embodiment is specifically described in conjunction with attached drawing first below
100。
As shown in Figure 1, including the first warehouse according to the device 100 of the removal colloidal sol intermediate ion of the utility model embodiment
10, the second warehouse 20 and positive and negative electrode 30.
Specifically, be formed with inside the first warehouse 10 accommodate liquid the first accommodating chamber 13, the first warehouse 10 be equipped with
The liquid outlet 12 of inlet 11 that first accommodating chamber 13 communicates and discharge liquid, the second warehouse 20 are arranged the of the first warehouse 10
In one accommodating chamber 13, the second accommodating chamber 21 for accommodating liquid is formed with inside the second warehouse 20, the side wall of the second warehouse 20 is equipped with
Filter membrane 22, the liquid ions under electric field action in the second accommodating chamber 21 can pass through filter membrane 22 to enter in the first accommodating chamber 13,
Positive and negative electrode 30 is separately mounted in the first warehouse 10, and the first accommodating chamber 13 of the first warehouse 10 is stretched into one end of positive and negative electrode 30
The interior and other end with DC power supply for connecting.
In other words, the first warehouse 10 is internally provided with the first accommodating chamber 13, and the first warehouse 10 is equipped with 11 He of inlet simultaneously
Liquid outlet 12, sol solution can be entered by inlet 11 in the first accommodating chamber 13, will by liquid outlet 12 after treatment
Solution is discharged.Second warehouse 20 can be put into the first accommodating chamber 13 of the first warehouse 10 by inlet 11, in the second warehouse 20
Portion is equipped with the second accommodating chamber 21, and the second accommodating chamber 21 is for containing sol liquid or other liquid, in the side wall of the second warehouse 20
It is equipped with filter membrane 22.First warehouse 10 is internally provided with positive and negative electrode 30, after positive and negative electrode 30 is connect with DC power supply and with
One accommodating chamber 13 is electrically connected with the liquid formation in the second accommodating chamber 21, and the liquid ions in the second accommodating chamber 21 are in electric field at this time
Under effect, zwitterion passes through positive and negative electrode 30 of the filter membrane 22 respectively into the first accommodating chamber 13 to move, to be accommodated second
Ion remaval in chamber 21 in liquid.30 external 220V DC power supplies of preferred positive and negative electrode in the embodiments of the present invention,
Its operating voltage is adjustable, maximum current≤2A, and suitable voltage can also be connected according to actual conditions or adjusts operating current
Size.
The liquid outlet 12 of the utility model can be controlled by valve, and valve is made of plastics dielectric material, such as poly- third
Alkene plastics are made.
As a result, according to the device 100 of the removal colloidal sol intermediate ion of the utility model embodiment, by the way that the first warehouse is arranged
10, the second warehouse 20 being arranged in the first warehouse 10,20 side wall of the second warehouse is equipped with filter membrane 22, is equipped with just in the first warehouse 10
Negative electrode 30, positive and negative electrode 30 make to be formed with electric field in the first warehouse 10 and the second warehouse 20 in the case where powering on, electricity
Field provides power for Ion transfer, and the zwitterion in liquid in the second warehouse 20 is moved to the first warehouse 10 by filter membrane 22
Positive and negative electrode 30 at, and then eliminate the ion in the second warehouse 20 in liquid, which is not only simple in structure, and can make
Foreign ion quickly removes in colloidal sol, at low cost, efficient.
Preferred embodiment according to the present utility model, filter membrane 22 is by polymer chemistry synthetic material or natural macromolecular material
It is made, filter membrane 22 has the aperture of predetermined size, soluble small molecular or ion can be allowed to penetrate by the filter membrane 22, cannot allow and receive
Rice oxide or colloid macromolecules penetrate, and the aperture of filter membrane 22 can be selected according to actual conditions, if aperture is preferably 20nm,
That is the colloidal sol molecule of 20nm or more cannot penetrate filter membrane 22, and charged ion can pass freely through filter membrane 22, to by colloidal sol and molten
Ion isolation in glue.
One embodiment according to the present utility model, filter membrane 22 be arranged the second warehouse 20 side wall it is corresponding with electrode
At position, filter membrane 22 is correspondingly arranged with positive and negative electrode 30 and moves out convenient for ion, improves ion remaval efficiency.
One embodiment according to the present utility model, the first warehouse 10 are internally provided with the support for being used to support the second warehouse 20
Plate 40, support plate 40 divide the first accommodating chamber 13 for upper chamber 131 and lower chambers 132, and support plate 40 is equipped with through-hole to be connected to
Upper chamber 131 and lower chambers 132.
That is, be equipped with support plate 40 in the first accommodating chamber 13 of the first warehouse 10, support plate 40 can support the
Two warehouses 20, while the first accommodating chamber 13 being divided for upper chamber 131 and lower chambers 132, the through-hole in support plate 40 is by upper chamber
131 are connected to lower chambers 132, to keep upper chamber 131 consistent with the liquid component in lower chambers 132.The reality of the utility model
It applies support plate 40 in example to be made of alumina ceramic material, after a period of use, cleaning can be convenient for.
A kind of device 100 of removal colloidal sol intermediate ion of the utility model further includes agitating device 50, and agitating device 50 is set
It sets in the lower chambers 132 of the first accommodating chamber 13 and is oppositely arranged with liquid outlet 12.Further agitating device 50 includes power
Source and the blade being connect with power source, in 132 internally-powered source driving blade rotation of lower chambers so that the first accommodating chamber 13 and second
Ion in accommodating chamber 21 in liquid accelerates movement, substantially increases the speed of deionization.The preferred implementation of the utility model
The revolution of agitating device 50 can be adjusted in example, and the range of speeds is preferably 60-2000r/min.
Preferably, as shown in Figure 1, the first warehouse 10 be equipped with upper cover 14, specifically, the upper cover 14 by electrically non-conductive material for example
Plastics are made, and complete warehouse is formed with the first warehouse 10, and whole device is made to be in a kind of atmospheric pressure environment.Upper cover 14 is for sealing
Inlet 11, the second warehouse 20 can be put into the first accommodating chamber 13 by inlet 11.Upper cover 14 is equipped with and can open and close
The breather valve 141 closed, under normal conditions due to self gravitation effect, breather valve 141 is in air-tight state, can prevent dust etc.
Alien material enters device, and liquid splash in the anti-locking apparatus operational process of energy.When generation gas makes pressure increase in device,
Breather valve 141 can under pressure be automatically opened to reduce the pressure in device, be played a protective role.
In some specific implementation modes of the utility model, the second warehouse 20 is with 10 size of the first warehouse
20%-80%, it is preferable that the second warehouse 20 and 10 size of the first warehouse are 30%-70%, more preferably 45%-65%,
The space use ratio that the first accommodating chamber 13 and the second accommodating chamber 21 can be preferably utilized by the ratio, with when shorter
Ion in the second accommodating chamber 21 of interior removal in liquid.
Preferably, the first warehouse 10 and the second warehouse 20 are made of insulating materials.Insulating materials include ceramics, plastics or
Glass.
In one embodiment of the utility model, the first warehouse 10 is made of polypropylene plastics, both can guarantee entire
Device does not generate leaky, and has certain intensity, ensures that foreign ion removal process can be smooth at a certain temperature
Progress.Second warehouse 20 uses polytetrafluoroethylplastic plastic, has preferable corrosion resistance and has certain intensity, convenient for clear
It washes, it can be used repeatedly.
In one embodiment of the utility model, positive and negative electrode 30 is graphite electrode, cheap, reduces cost.
In the following, describing to remove colloidal sol intermediate ion using the device 100 of above-mentioned removal colloidal sol intermediate ion in conjunction with Fig. 1
Method, this approach includes the following steps：
The oxide sol of impure ion is added and by the second warehouse in S1 in the second accommodating chamber 21 of the second warehouse 20
20 are placed in inside the first accommodating chamber 13 of the first warehouse 10；
Specifically, the sol solution containing foreign ion of certain volume is poured into the second warehouse 20, and will be equipped with molten
Second warehouse 20 of sol solution is built in the support plate 40 in the first accommodating chamber 13 of the first warehouse 10.
The oxide sol of impure ion is added, so that the liquid in the first accommodating chamber 13 in S2 in the first accommodating chamber 13
Liquid level of the liquid level of body not higher than the liquid in the second accommodating chamber 21；
Specifically, the colloidal sol identical with 20 ingredient of the second warehouse that certain volume is injected into the first warehouse 10, makes liquid level
The upper surface that the second warehouse 20 cannot be submerged covers 10 upper cover 14 of the first warehouse.
Positive and negative electrode 30 is separately connected the positive and negative anodes of DC power supply to be powered to oxide sol by S3；
S4 closes power supply after powering on the predetermined time, opens the liquid in leakage fluid dram the first accommodating chamber 13 of exclusion,
Recycling is located at the oxide sol in the second accommodating chamber 21.
Preferably, step S2- step S4 are repeated, until the conductivity of the oxide sol in the second accommodating chamber 21 is predetermined
In range.
Preferably, it is stirred while energization to oxide sol in step S3.Specifically, pass through agitating device
Liquid in first accommodating chamber 13 is stirred.
The method for specifically describing the removal colloidal sol intermediate ion according to the utility model embodiment with reference to specific embodiment.
Embodiment 1
Using the device of removal colloidal sol intermediate ion shown in FIG. 1 to miscellaneous in the silica sol containing sodium ion and chlorion
Matter ion remaval, detailed process are as follows：
Before experiment, sol solution conductivity is tested using MP256 conductivity measurements, and record data.
Device as shown in Figure 1 opens the first warehouse upper cover, takes out the second warehouse, is poured into the second accommodating chamber certain
Then the silica sol of volume is put back to the second warehouse in the first warehouse, then poured into the first accommodating chamber of the first warehouse
The silica sol solution of certain volume prevents liquid level from submerging the upper end of the second warehouse, covers the upper cover of the first warehouse.
Graphite electrode is connect with DC power supply, is turned on the power switch, adjusting current output value is 1.2A, and device is made to start
Operation.
Agitating device switch is opened, suitable rotating speed is adjusted, reaches churned mechanically effect.
After 30min, DC power supply and agitating device are closed, liquid outlet is then opened, the liquid in the first warehouse is discharged,
The first warehouse upper cover is opened, the second warehouse is taken out, sol solution electricity in the second accommodating chamber is tested using MP256 conductivity measurements
Conductance.
After repeating the above process three times, obtained conductivity data is as shown in table 1 below.
The silica sol conductivity after different time is handled of table 1
As can be seen that after certain time is handled, conductive sol rate hereinafter, almost non-conductive, shows molten in 1us/cm
Foreign ion in glue is substantially eliminated.
Embodiment 2
It using the device of removal colloidal sol intermediate ion as shown in Figure 1 prepared by zirconia aerogels material, is prepared
Foreign ion in colloidal sol is removed in the process.Detailed process is as follows：
The preparation of zirconia sol：With inorganic precursor ZrOCl2For presoma, acetic acid is chelating agent, prepares ZrO2Colloidal sol,
1) 0.3gNaOH is dissolved in 20ml deionized waters, 1.6ml acetic acid is then added under stirring is made buffer solution, stirs
96ml ethanol solutions are added under state, 6gZrOCl2 is finally added into solution, stirring 30min is placed on 1.5h in 50 DEG C of baking ovens
It can be prepared by zirconia sol.
Before experiment, sol solution conductivity is tested using MP256 conductivity measurements, and record data.
As shown in Figure 1, opening the first warehouse upper cover, the second warehouse is taken out, is poured on certain volume into the second accommodating chamber
Zirconia sol obtained is stated, then puts back to the second warehouse in the first warehouse, then is fallen into the first accommodating chamber of the first warehouse
The zirconia sol solution for entering certain volume prevents liquid level from submerging the second warehouse, covers the first warehouse upper cover.
Graphite electrode is connect with DC power supply, is turned on the power switch, adjusting current output value is 1.2A, and device is made to start
Operation.
Agitating device is opened, suitable rotating speed is adjusted, reaches churned mechanically effect.
After 30min, DC power supply and agitating device are closed, opens liquid outlet, the liquid in the first warehouse is discharged, is opened
First warehouse upper cover takes out the second warehouse, and the sol solution conductance in the second accommodating chamber is tested using MP256 conductivity measurements
Rate.
After repeating the above process three times, obtained conductivity data is as shown in table 2 below.
The zirconia sol conductivity after different time is handled of table 2
It can be seen that after certain time is handled, conductive sol rate hereinafter, almost non-conductive, shows molten in 1us/cm
Foreign ion in glue is substantially removed.
To sum up, according to the utility model embodiment removal colloidal sol intermediate ion device, by be arranged the first warehouse,
The connection structure of second warehouse, positive and negative electrode and each component, and by the device come the method for removing colloidal sol intermediate ion, it can
Simply and effectively to remove the foreign ion in oxide sol, and process cycle is shorter, reproducible, at low cost, overcomes
The shortcomings that conventional method is of high cost, and time-consuming can adapt to the large-scale industrial production of aerogel material.
The above is preferred embodiments of the present invention, it is noted that for the ordinary skill of the art
For personnel, under the premise of not departing from principle described in the utility model, it can also make several improvements and retouch, these improvement
The scope of protection of the utility model is also should be regarded as with retouching.
Claims (9)
1. a kind of device of removal colloidal sol intermediate ion, which is characterized in that including：
First warehouse is formed with the first accommodating chamber for accommodating liquid inside first warehouse, and first warehouse is equipped with and institute
State the liquid outlet of inlet and discharge liquid that the first accommodating chamber communicates；
Second warehouse, second warehouse are arranged in first accommodating chamber of the first warehouse, shape inside second warehouse
At having the second accommodating chamber for accommodating liquid, the side wall of second warehouse to be equipped with filter membrane, described second accommodates under electric field action
The liquid ions of intracavitary can pass through the filter membrane to enter in first accommodating chamber；
Positive and negative electrode, the positive and negative electrode are separately mounted in first warehouse, and one end of the positive and negative electrode is stretched into described
In first accommodating chamber of the first warehouse and the other end with DC power supply for connecting.
2. the device of removal colloidal sol intermediate ion according to claim 1, which is characterized in that the filter membrane has predetermined size
Aperture.
3. the device of removal colloidal sol intermediate ion according to claim 1, which is characterized in that filter membrane setting is described the
The side wall of two warehouses at the electrode opposite position.
4. the device of removal colloidal sol intermediate ion according to claim 1, which is characterized in that first warehouse is internally provided with
It is used to support the support plate of second warehouse, first accommodating chamber is divided into upper chamber and lower chambers by the support plate, institute
Support plate is stated equipped with through-hole to be connected to the upper chamber and the lower chambers.
5. the device of removal colloidal sol intermediate ion according to claim 1, which is characterized in that further include agitating device, it is described
The bottom chamber in first accommodating chamber is arranged in agitating device.
6. the device of removal colloidal sol intermediate ion according to claim 1, which is characterized in that first warehouse is equipped with upper
Lid, the upper cover is for sealing the inlet.
7. the device of removal colloidal sol intermediate ion according to claim 6, which is characterized in that the upper lid is equipped with and can open
The breather valve for opening and closing.
8. the device of removal colloidal sol intermediate ion according to claim 1, which is characterized in that second warehouse and described the
One warehouse size is 20%-80%.
9. the device of removal colloidal sol intermediate ion according to claim 8, which is characterized in that second warehouse and described the
One warehouse size is 45%-65%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721466374.8U CN207614814U (en) | 2017-11-07 | 2017-11-07 | Remove the device of colloidal sol intermediate ion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721466374.8U CN207614814U (en) | 2017-11-07 | 2017-11-07 | Remove the device of colloidal sol intermediate ion |
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| Publication Number | Publication Date |
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| CN207614814U true CN207614814U (en) | 2018-07-17 |
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ID=62827934
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107737569A (en) * | 2017-11-07 | 2018-02-27 | 上海亚澎新材料科技有限公司 | Remove the device and method of colloidal sol intermediate ion |
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2017
- 2017-11-07 CN CN201721466374.8U patent/CN207614814U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107737569A (en) * | 2017-11-07 | 2018-02-27 | 上海亚澎新材料科技有限公司 | Remove the device and method of colloidal sol intermediate ion |
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| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200403 Address after: Room 108-109, building A1, no.756, Kuntai Road, Yushan Town, Kunshan City, Suzhou City, Jiangsu Province Patentee after: Kunshan Youchao Puli New Material Technology Co., Ltd. Address before: 314006 3FA03-06-119, 705 Asia Pacific Road, Nanhu District, Zhejiang, Jiaxing Patentee before: YOUPENG (JIAXING) NEW MATERIALS TECHNOLOGY Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180717 Termination date: 20191107 |