CN211676731U - Natural gas filtering and separating device - Google Patents
Natural gas filtering and separating device Download PDFInfo
- Publication number
- CN211676731U CN211676731U CN202020039709.3U CN202020039709U CN211676731U CN 211676731 U CN211676731 U CN 211676731U CN 202020039709 U CN202020039709 U CN 202020039709U CN 211676731 U CN211676731 U CN 211676731U
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- China
- Prior art keywords
- air inlet
- gas outlet
- gas
- valve
- filtering
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 238000001914 filtration Methods 0.000 title claims abstract description 50
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 50
- 239000003345 natural gas Substances 0.000 title claims abstract description 25
- 239000007789 gas Substances 0.000 claims abstract description 75
- 239000000463 material Substances 0.000 claims abstract description 38
- 238000000926 separation method Methods 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 238000006243 chemical reaction Methods 0.000 claims description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 12
- 239000000919 ceramic Substances 0.000 claims description 12
- 239000000835 fiber Substances 0.000 claims description 12
- 239000004973 liquid crystal related substance Substances 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 12
- 239000003365 glass fiber Substances 0.000 claims description 11
- 229910001220 stainless steel Inorganic materials 0.000 claims description 9
- 239000010935 stainless steel Substances 0.000 claims description 9
- 238000002955 isolation Methods 0.000 claims description 7
- 239000011148 porous material Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 239000010865 sewage Substances 0.000 claims 5
- 230000000694 effects Effects 0.000 abstract description 3
- 238000010992 reflux Methods 0.000 abstract description 3
- 230000008929 regeneration Effects 0.000 abstract description 3
- 238000011069 regeneration method Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 230000003750 conditioning effect Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000009298 carbon filtering Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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Landscapes
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The utility model discloses a natural gas filtering separation device, it includes filtering separation device body, electrical control structure, the structure of giving vent to anger, inlet structure, filtering separation device body includes separator barrel, upper cover seal structure, and electrical control structure, inlet structure are installed to its right side from the top down, and the structure of giving vent to anger is installed on the right side, it is internal that separator barrel is arranged in to the structure of giving vent to anger, inlet structure part. The beneficial effects of the utility model are that: the three-layer filter layer structural design, the filter effect is good, and from taking back flush equipment, filtering material regeneration is convenient, long service life, and the design of gaseous one-way check valve can effectually prevent because of the harm of gas reflux to filtering separation device that reasons such as gas-supply pipe damage caused.
Description
Technical Field
The utility model relates to a natural gas filtering and separating device belongs to natural gas transmission equipment technical field.
Background
Natural gas is widely used as a clean energy source, and after being mined, the natural gas needs to be filtered by a filtering device to be conveyed to a user for use. However, in the process of filtering natural gas, substances such as dust, slag, iron filings and the like carried by the natural gas can remain in the filtering and separating device in the filtering and separating process, so that the filtering and separating device needs to be cleaned regularly, but the cleaning process is too complicated and harmful to human bodies. Meanwhile, the filtering and separating device is easy to leak after being used for a long time, and the existing filtering and separating device generally has the problem that the cleaning force is not enough and the leakage is caused.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in providing a natural gas filtering separation device, its three-layer filter layer structural design, the filter effect is good, and from taking back flush equipment, and filter material regeneration is convenient, long service life, and the design of gaseous single-pass check valve can effectually prevent because of the harm of gas reflux to filtering separation device that reasons such as gas-supply pipe damage caused.
The utility model discloses a following scheme realizes: the utility model provides a natural gas filtering separation device, its includes filtering separation device body, electrical control structure, the structure of giving vent to anger, inlet structure, filtering separation device body includes separator barrel, upper cover seal structure, and electrical control structure, inlet structure are installed to its right side from the top down, and the structure of giving vent to anger is installed on the right side, it is internal that separator barrel is arranged in to the structure of giving vent to anger, inlet structure part.
The separator barrel includes barrel shell, blowdown solenoid valve, water distribution board, active carbon filtering material layer, ceramic fiber filtering material layer, glass fiber filtering material layer, the barrel shell is stainless steel construction's cylinder, and its inside from the top down installs water distribution board, glass fiber filtering material layer, ceramic fiber filtering material layer, active carbon filtering material layer in proper order, and the blowdown solenoid valve is installed to its bottom, the blowdown solenoid valve communicates with the barrel shell is inside and blow off pipe, ceramic fiber filtering material layer filtering pore diameter is less than the filtering pore diameter on active carbon filtering material layer, is greater than the filtering pore diameter on glass fiber filtering material layer.
The upper cover sealing structure comprises a high-pressure pump, a rubber sealing isolation layer and a circular arc-shaped upper cover, the circular arc-shaped upper cover is of a stainless steel structure and is arranged at the top of the cylinder shell, the rubber sealing isolation layer is located between the circular arc-shaped upper cover and the cylinder shell, the high-pressure pump is arranged at the top end of the circular arc-shaped upper cover and is connected with an external water source and a water distribution plate through a liquid guide pipe.
The air inlet structure comprises an air inlet pipe joint, an air inlet gas one-way valve, an air inlet waterproof electromagnetic circuit breaking valve, an air inlet pipe and an air inlet pressure monitor, wherein the air inlet pipe joint is connected with the air inlet gas one-way valve, the air inlet pressure monitor is installed in the air inlet pipe joint, the air inlet gas one-way valve is connected with the air inlet waterproof electromagnetic circuit breaking valve, the air inlet waterproof electromagnetic circuit breaking valve is connected with the air inlet pipe, the air inlet pipe penetrates through the barrel shell and is partially arranged in the barrel shell, and the air inlet pressure monitor can monitor the air pressure in the air inlet pipe joint in real time.
The gas outlet structure comprises a gas outlet pipe joint, a gas outlet one-way valve, a gas outlet waterproof electromagnetic circuit breaking valve, a gas outlet pipe and a gas outlet pressure monitor, the gas outlet pipe joint is connected with the gas outlet one-way valve, the gas outlet pressure monitor is installed in the gas outlet one-way valve, the gas outlet one-way valve is connected with the gas outlet waterproof electromagnetic circuit breaking valve, the gas outlet waterproof electromagnetic circuit breaking valve is connected with the gas outlet pipe, the gas outlet pipe transversely penetrates through the cylinder shell and is partially arranged in the cylinder shell, and the gas outlet pressure monitor can monitor the gas pressure in the gas outlet pipe joint.
The electric control structure includes battery structure, microprocessor, signal conversion and conditions structure, electric control structure shell, liquid crystal control display screen, electric control structure shell is stainless steel square box, and its lower bottom surface is equipped with power source, openly installs the liquid crystal control display screen, and its internally mounted has battery structure, microprocessor, signal conversion and conditions the structure, the battery structure passes through wire and microprocessor, power source connection, microprocessor is through wire and signal conversion and conditions the structural connection, signal conversion is conditioned the structure and is connected through wire and waterproof electromagnetism shut-off valve of giving vent to anger, the pressure monitor of giving vent to anger, the waterproof electromagnetism shut-off valve of admitting air, the pressure monitor of admitting air, high-pressure pump, blowdown solenoid valve, liquid crystal control display screen and device external equipment are connected.
The utility model has the advantages that:
1. the utility model relates to a natural gas filtering separation device, its three-layer filter layer structural design, the filter effect is good, and from taking back flush equipment, and filtering material regeneration is convenient, long service life, and the design of gaseous one-way check valve can effectually prevent because of the harm of the gas reflux that reasons such as gas-supply pipe damage caused to filtering separation device.
Drawings
Fig. 1 is a schematic front view of the natural gas filtering and separating device of the present invention.
Fig. 2 is a schematic view of the front cross-sectional structure of the natural gas filtering and separating device of the present invention.
In the figure: 1 is a filtering and separating device body, 2 is an electrical control structure, 3 is an air outlet structure, 4 is an air inlet structure, 5 is an air outlet pipe joint, 6 is an air outlet gas one-way valve, 7 is an air outlet waterproof electromagnetic circuit-breaking valve, 8 is an air outlet pipe, 9 is an air outlet pressure monitor, 10 is an air inlet pipe joint, 11 is an air inlet gas one-way valve, 12 is an air inlet waterproof electromagnetic circuit-breaking valve, 13 is an air inlet pipe, 14 is an air inlet pressure monitor, 15 is a separating device cylinder, 16 is an upper cover sealing structure, 17 is a high-pressure pump, 18 is a liquid conduit, 19 is a rubber sealing and isolating layer, 20 is a circular arc-shaped upper cover, 21 is a cylinder shell, 22 is a battery structure, 23 is a microprocessor, 24 is a signal conversion and conditioning structure, 25 is a lead, 26 is an electrical control structure shell, 27 is a power supply interface, 28 is a blow-off electromagnetic valve, 29 is a blow-off pipe, 32 is a ceramic fiber filter material layer, 33 is a glass fiber filter material layer, and 34 is a liquid crystal control display screen.
Detailed Description
The present invention will be further described with reference to fig. 1 and 2, but the scope of the present invention is not limited to the contents.
In which like parts are designated by like reference numerals. It is noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component, and the drawings are in greatly simplified form and employ non-precise ratios, merely for the purpose of facilitating and distinctly aiding in the description of the embodiments of the present invention.
In the following description, for purposes of clarity, not all features of an actual implementation are described, well-known functions or constructions are not described in detail since they would obscure the invention with unnecessary detail, it being understood that in the development of any actual embodiment, numerous implementation details must be set forth in order to achieve the developer's specific goals, such as compliance with system-related and business-related constraints, changing from one implementation to another, and it being recognized that such development efforts may be complex and time consuming, but would nevertheless be a routine undertaking for those of ordinary skill in the art.
The utility model provides a natural gas filtering separation device, its includes filtering separation device body 1, electrical control structure 2, gives vent to anger structure 3, inlet structure 4, filtering separation device body 1 includes separator barrel 15, upper cover seal structure 16, and electrical control structure 2, inlet structure 4 are installed from the top down to its right side, and outlet structure 3 is installed on the right side, and outlet structure 3, inlet structure 4 part are arranged in separator barrel 15.
The separating device barrel 15 comprises a barrel shell 21, a blowdown electromagnetic valve 28, a water distribution plate 30, an activated carbon filter material layer 31, a ceramic fiber filter material layer 32 and a glass fiber filter material layer 33, wherein the barrel shell 21 is cylindrical and is of a stainless steel structure, the water distribution plate 30, the glass fiber filter material layer 33, the ceramic fiber filter material layer 32 and the activated carbon filter material layer 31 are sequentially arranged in the barrel shell from top to bottom, the blowdown electromagnetic valve 28 is arranged at the bottom of the barrel shell, the blowdown electromagnetic valve 28 is communicated with the interior of the barrel shell 21 and a blowdown pipe 29, and the diameter of a filter pore of the ceramic fiber filter material layer 32 is smaller than that of the filter pore of the activated carbon filter material layer 31 and larger than that of.
The upper cover sealing structure 16 comprises a high-pressure pump 17, a rubber sealing isolation layer 19 and an arc-shaped upper cover 20, the arc-shaped upper cover 20 is of a stainless steel structure and is arranged at the top of the cylinder shell 21, the rubber sealing isolation layer 19 is positioned between the arc-shaped upper cover 20 and the cylinder shell 21, the high-pressure pump 17 is arranged at the top end of the arc-shaped upper cover 20 and is connected with an external water source and a water distribution plate 30 through a liquid conduit 18.
The air inlet structure 4 comprises an air inlet pipe joint 10, an air inlet gas one-way valve 11, an air inlet waterproof electromagnetic circuit-breaking valve 12, an air inlet pipe 13 and an air inlet pressure monitor 14, the air inlet pipe joint 10 is connected with the air inlet gas one-way valve 11, the air inlet pressure monitor 14 is installed in the air inlet pipe joint, the air inlet gas one-way valve 11 is connected with the air inlet waterproof electromagnetic circuit-breaking valve 12, the air inlet waterproof electromagnetic circuit-breaking valve 12 is connected with the air inlet pipe 13, the air inlet pipe 13 penetrates through the cylinder shell 21 and is partially arranged in the cylinder shell 21, and the air inlet pressure monitor 14 can monitor the air.
The gas outlet structure 3 comprises a gas outlet pipe joint 5, a gas outlet one-way valve 6, a gas outlet waterproof electromagnetic circuit breaking valve 7, a gas outlet pipe 8 and a gas outlet pressure monitor 9, the gas outlet pipe joint 5 is connected with the gas outlet one-way valve 6, the gas outlet pressure monitor 9 is installed in the gas outlet one-way valve 6, the gas outlet one-way valve 6 is connected with the gas outlet waterproof electromagnetic circuit breaking valve 7, the gas outlet waterproof electromagnetic circuit breaking valve 7 is connected with the gas outlet pipe 8, the gas outlet pipe 8 transversely penetrates through the cylinder shell 21 and is partially arranged in the cylinder shell 21, and the gas outlet pressure monitor 9 can monitor the gas.
The electrical control structure 2 comprises a battery structure 22, a microprocessor 23, a signal conversion conditioning structure 24, an electrical control structure shell 26 and a liquid crystal control display screen 34, wherein the electrical control structure shell 26 is a stainless steel square box, a power interface 27 is arranged on the lower bottom surface of the electrical control structure shell, the liquid crystal control display screen 34 is arranged on the front surface of the electrical control structure shell, the battery structure 22, the microprocessor 23 and the signal conversion conditioning structure 24 are arranged in the electrical control structure shell, the battery structure 22 is connected with the microprocessor 23 and the power interface 27 through leads 25, the microprocessor 23 is connected with the signal conversion conditioning structure 24 through leads 25, and the signal conversion conditioning structure 24 is connected with a waterproof air outlet electromagnetic circuit breaker 7, an air outlet pressure monitor 9, a waterproof air inlet electromagnetic circuit breaker 12, an air inlet pressure monitor 14, a high-pressure pump 17, a blowdown electromagnetic valve 28, the liquid crystal control.
Example 1: the natural gas enters the filtering and separating device body 1 from the air inlet structure 4, is filtered by the activated carbon filtering material layer 31, the ceramic fiber filtering material layer 32 and the glass fiber filtering material layer 33, and then flows out from the air outlet structure 3 after passing through the water distribution plate 30.
Example 2: the natural gas flow through the utility model discloses the in-process, the natural gas atmospheric pressure that intake pressure monitor 14, pressure monitor 9 of giving vent to anger monitored through intake pipe joint 10 and outlet duct joint 5 respectively in real time to the data that will monitor transmit to signal conversion and condition 24 processing back to microprocessor 23 further processing storage with the form of signal of telecommunication, on data signal transmission after being handled by microprocessor 23 displayed on liquid crystal display control 34, with the form of digit or characters shows.
Example 3: if the pressure value that pressure monitor 14, the pressure monitor 9 of giving vent to anger monitored surpasses the settlement the utility model discloses when the maximum pressure value of permission, perhaps pressure value fluctuation range surpasses the settlement range, microprocessor 23 control give vent to anger waterproof electromagnetism shut-off valve 7, the waterproof electromagnetism shut-off valve 12 of admitting air cuts off the gas circuit.
Example 4: accessible liquid crystal control display screen 34 sets for the utility model discloses an each electrical equipment parameter.
Example 5: microprocessor 23 can record the utility model discloses the natural gas time has been filtered, if reach and set for after the back flush procedure interval time of start-up, the washing procedure is put to automatic start, at first the control waterproof electromagnetism cut-off valve 7 of giving vent to anger, waterproof electromagnetism cut-off valve 12 cuts off the gas circuit admits air, control blowdown solenoid valve 28 is opened, let separator barrel 15 and blow off pipe 29 intercommunication, start high-pressure pump 17, outside cleaning water reachs water distributor 30 after passing through the pressurization of high-pressure pump 17, water distributor 30 is with the even blowout of water, to active carbon filter material layer 31, ceramic fiber filter material layer 32, glass fiber filter material layer 33 washes, waste water after the washing flows out from blow off pipe 29, rubber seal isolation layer 19 can seal separator barrel 15 upper portion, prevent to get into in the circular arc shape of face upper cover 20.
The internal structure, operation principle and operation process of the microprocessor 23 and the signal conversion and conditioning structure 24 are well known in the art and will not be described herein.
Although the invention has been shown and described in detail with respect to the preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. A natural gas filtering and separating device is characterized in that: the gas-liquid separation device comprises a filtering and separating device body (1), an electrical control structure (2), a gas outlet structure (3) and a gas inlet structure (4), wherein the filtering and separating device body (1) comprises a separating device cylinder body (15) and an upper cover sealing structure (16), the electrical control structure (2) and the gas inlet structure (4) are installed on the right side of the filtering and separating device body from top to bottom, the gas outlet structure (3) is installed on the right side, and the gas outlet structure (3) and the gas inlet structure (4) are partially arranged in the separating device cylinder body (15).
2. The natural gas filtering and separating device according to claim 1, wherein: the separation device barrel (15) comprises a barrel shell (21), a sewage discharge electromagnetic valve (28), a water distribution plate (30), an active carbon filter material layer (31), a ceramic fiber filter material layer (32) and a glass fiber filter material layer (33), wherein the barrel shell (21) is in a cylindrical shape with a stainless steel structure, a water distribution plate (30), a glass fiber filter material layer (33), a ceramic fiber filter material layer (32) and an active carbon filter material layer (31) are sequentially arranged in the filter material layer from top to bottom, the bottom of the sewage discharge electromagnetic valve (28) is provided with the sewage discharge electromagnetic valve (28), the sewage discharge electromagnetic valve (28) is communicated with the interior of the cylinder shell (21) and a sewage discharge pipe (29), the diameter of the filter pore of the ceramic fiber filter material layer (32) is smaller than that of the active carbon filter material layer (31) and larger than that of the glass fiber filter material layer (33).
3. The natural gas filtering and separating device according to claim 1, wherein: the upper cover sealing structure (16) comprises a high-pressure pump (17), a rubber sealing isolation layer (19) and a circular arc-shaped upper cover (20), the circular arc-shaped upper cover (20) is of a stainless steel structure and is installed at the top of the barrel shell (21), the rubber sealing isolation layer (19) is located between the circular arc-shaped upper cover (20) and the barrel shell (21), the high-pressure pump (17) is installed at the top end of the circular arc-shaped upper cover (20), and the high-pressure pump is connected with an external water source and a water distribution plate (30) through a liquid guide pipe (18).
4. The natural gas filtering and separating device according to claim 1, wherein: the air inlet structure (4) comprises an air inlet pipe joint (10), an air inlet gas one-way valve (11), an air inlet waterproof electromagnetic circuit breaker valve (12), an air inlet pipe (13) and an air inlet pressure monitor (14), wherein the air inlet pipe joint (10) is connected with the air inlet gas one-way valve (11), the air inlet pressure monitor (14) is installed in the air inlet pipe joint, the air inlet gas one-way valve (11) is connected with the air inlet waterproof electromagnetic circuit breaker valve (12), the air inlet waterproof electromagnetic circuit breaker valve (12) is connected with the air inlet pipe (13), the air inlet pipe (13) penetrates through a barrel shell (21) and is partially arranged in the barrel shell (21), and the air inlet pressure monitor (14) can monitor the air pressure in the air inlet pipe joint (10) in real time.
5. The natural gas filtering and separating device according to claim 1, wherein: the gas outlet structure (3) comprises a gas outlet pipe joint (5), a gas outlet one-way valve (6), a gas outlet waterproof electromagnetic circuit breaking valve (7), a gas outlet pipe (8) and a gas outlet pressure monitor (9), wherein the gas outlet pipe joint (5) is connected with the gas outlet one-way valve (6), the gas outlet pressure monitor (9) is installed in the gas outlet one-way valve (5), the gas outlet one-way valve (6) is connected with the gas outlet waterproof electromagnetic circuit breaking valve (7), the gas outlet waterproof electromagnetic circuit breaking valve (7) is connected with the gas outlet pipe (8), the gas outlet pipe (8) transversely penetrates through a cylinder shell (21) and is partially arranged in the cylinder shell (21), and the gas outlet pressure monitor (9) can monitor the gas pressure in the gas outlet pipe joint (5.
6. The natural gas filtering and separating device according to claim 1, wherein: electric control structure (2) is including battery structure (22), microprocessor (23), signal conversion and conditions structure (24), electric control structure shell (26), liquid crystal control display screen (34), electric control structure shell (26) are stainless steel square box, and its lower bottom surface is equipped with power source (27), openly installs liquid crystal control display screen (34), and its internally mounted has battery structure (22), microprocessor (23), signal conversion and conditions structure (24), battery structure (22) are connected with microprocessor (23), power source (27) through wire (25), microprocessor (23) are connected with signal conversion and conditions structure (24) through wire (25), signal conversion and conditions structure (24) and give vent to anger waterproof electromagnetism broken circuit valve (7), pressure monitor (9) of giving vent to anger through wire (25), give vent to anger, The air inlet waterproof electromagnetic circuit-breaking valve (12), the air inlet pressure monitor (14), the high-pressure pump (17), the blow-down electromagnetic valve (28), the liquid crystal control display screen (34) and external equipment of the device are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020039709.3U CN211676731U (en) | 2020-01-08 | 2020-01-08 | Natural gas filtering and separating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020039709.3U CN211676731U (en) | 2020-01-08 | 2020-01-08 | Natural gas filtering and separating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211676731U true CN211676731U (en) | 2020-10-16 |
Family
ID=72799938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020039709.3U Expired - Fee Related CN211676731U (en) | 2020-01-08 | 2020-01-08 | Natural gas filtering and separating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211676731U (en) |
-
2020
- 2020-01-08 CN CN202020039709.3U patent/CN211676731U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201016 |
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| CF01 | Termination of patent right due to non-payment of annual fee |