CN217128757U - Novel roofing seepage prevention structure - Google Patents
Novel roofing seepage prevention structure Download PDFInfo
- Publication number
- CN217128757U CN217128757U CN202123426554.2U CN202123426554U CN217128757U CN 217128757 U CN217128757 U CN 217128757U CN 202123426554 U CN202123426554 U CN 202123426554U CN 217128757 U CN217128757 U CN 217128757U
- Authority
- CN
- China
- Prior art keywords
- layer
- waterproof
- roof panel
- roof
- side wall
- 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
Links
- 230000002265 prevention Effects 0.000 title claims abstract description 10
- 239000010410 layer Substances 0.000 claims abstract description 174
- 239000011241 protective layer Substances 0.000 claims abstract description 39
- 239000000463 material Substances 0.000 claims description 26
- 239000004567 concrete Substances 0.000 claims description 7
- 239000004793 Polystyrene Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 229920002223 polystyrene Polymers 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 claims description 5
- 229920000642 polymer Polymers 0.000 claims description 5
- 239000004814 polyurethane Substances 0.000 claims description 5
- 229920002635 polyurethane Polymers 0.000 claims description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 239000011490 mineral wool Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 22
- 238000009413 insulation Methods 0.000 abstract description 8
- 238000013461 design Methods 0.000 abstract description 4
- 238000010276 construction Methods 0.000 description 18
- 238000004321 preservation Methods 0.000 description 15
- 230000005465 channeling Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 238000012423 maintenance Methods 0.000 description 5
- 239000010426 asphalt Substances 0.000 description 4
- 239000011083 cement mortar Substances 0.000 description 3
- 230000010485 coping Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 229920001059 synthetic polymer Polymers 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000002998 adhesive polymer Substances 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011414 polymer cement Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Landscapes
- Roof Covering Using Slabs Or Stiff Sheets (AREA)
Abstract
The utility model relates to the technical field of roof leakage prevention, in particular to a novel roof leakage prevention structure; the waterproof structure comprises a roof panel and a side wall arranged at an angle with the roof panel, wherein a first waterproof extension layer, a first waterproof layer, a first leveling layer, a heat insulation layer, a second leveling layer, a second waterproof enhancement layer, a second waterproof layer and a protective layer are sequentially paved on the roof panel from bottom to top; one end of the first waterproof extension layer, one end of the first waterproof layer, one end of the second waterproof enhancement layer, one end of the second waterproof layer and one end of the protective layer extend to the corner of the roof panel respectively, extend upwards along the side wall and are fixedly connected with the side wall through detachable connecting pieces; the technical problem of roof leakage water existing in the prior art is solved through the design of a novel roof leakage prevention structure.
Description
Technical Field
The utility model belongs to the technical field of the roofing antiseep technique and specifically relates to a novel roofing antiseep structure is related to.
Background
The investigation of the seepage situation of buildings in the country in 2014 shows that the current roof seepage rate is as high as 97 percent. According to the relevant on-site standard requirements, the roof structure level should meet two basic requirements of heat preservation and water resistance, so the roof generally has an inverted roof and an upright roof, but the existing condition analysis of the roof has various problems:
1. when the inverted roof waterproof layer is constructed below the heat insulation layer, the heat insulation layer can store water, the heat insulation effect and the service life of the whole roof are affected, and once leakage occurs, during maintenance, structural layers above the waterproof layer are required to be completely removed, maintenance is performed again, the maintenance cost is high, and the influence is large.
2. The positive roof waterproof layer is constructed above the heat insulation layer, but when the waterproof layer has leakage points, the effect of the heat insulation layer is affected, the whole roof leaks, the leakage points are difficult to find, and the maintenance is difficult.
3. The waterproof layer that whole roofing used all is towards the construction mode that the main part of structure pasted, and because the material requires basic unit, construction workman levelness etc. practical problem, hardly reaches not scurrying water in the true and true meaning.
The most serious problem of the inverted roof or the upright roof is the heat preservation and water resistance. The waterproof layer used for the existing roof is generally waterproof materials such as SBS modified asphalt waterproof coiled materials, self-adhesive polymer modified asphalt waterproof coiled materials, high polymer asphalt coatings, synthetic polymer waterproof coiled materials, polyurethane waterproof coatings, JS polymer cement waterproof coatings and the like. The waterproof layer is fully adhered with the cement mortar leveling layer and the structural layer by adopting a hot melting method or a brushing method, so that the aims of preventing water from flowing and water from leaking are fulfilled. Theoretically, it is feasible, but the following problems can occur in the actual construction process:
1. asphalt and polyurethane waterproof materials have high requirements on base layers. The construction requirements of waterproof materials are difficult to meet on common construction sites. After the waterproof layer construction is finished, the waterproof layer is empty and bulges, and the theoretical water channeling resistance is lost.
2. The construction process of the synthetic polymer waterproof material generally adopts construction modes such as mechanical fixing, air-laid coping, adhesive bonding and the like, when the air-laid coping or the mechanical fixing is carried out, the waterproof layer is not bonded with the base layer, the waterproof layer does not have a water channeling resistance function, and once the waterproof layer has a damaged point, leakage can occur.
3. The breadth of a single roll of coiled material is 10 square meters or 20 square meters or other, the overlapping edges are bonded or welded to form a whole through site construction, and due to the problems of site progress and horizontal construction workers, 100 percent of the overlapping edges are difficult to achieve without defects.
4. In present roofing system, the waterproof layer is as the waterproof last protective screen of structure all the time, does not restrict its seepage radius from the source of water, in case the waterproof layer has the defect, will produce the seepage.
5. The existing whole roof waterproof layer is divided into an inverted type and an upright type, the existing whole roof waterproof layer is a construction form of being pasted downwards, and due to the practical problems of the requirement of materials on a base layer, the level of construction workers and the like, the water channeling prevention in the true sense is difficult to achieve, and the roof leakage rate is high.
Therefore, to the above-mentioned problem the utility model discloses the urgent need provides a novel roofing seepage prevention structure.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a novel roofing seepage prevention structure, through the design of novel roofing seepage prevention structure in order to solve the roofing heat preservation seepage back that exists among the prior art, maintenance difficulty, with high costs are difficult to seek the water leakage point, and the waterproof layer hardly reaches the technical problem who does not scurry water.
The utility model provides a novel roof anti-leakage structure, which comprises a roof panel and a side wall arranged at an angle with the roof panel, wherein a first waterproof extension layer, a first waterproof layer, a first leveling layer, a heat preservation layer, a second leveling layer, a second waterproof enhancement layer, a second waterproof layer and a protective layer are sequentially paved on the roof panel from bottom to top; one end of the first waterproof extension layer, the first waterproof layer, the second waterproof enhancement layer, the second waterproof layer and the protective layer respectively extend to the corner of the roof panel and extend upwards along the side wall and are fixedly connected with the side wall through detachable connecting pieces.
And further, the second waterproof layer is made of a pre-paved waterproof material, and the second waterproof layer is bonded with the protective layer.
Furthermore, the second waterproof reinforcing layer and the second waterproof layer are bonded into a whole.
Furthermore, the second waterproof enhancement layer is a double-sided polymer self-adhesive waterproof roll.
Further, the second waterproof reinforcing layer is laid on the roof panel and is 250mm in length.
Furthermore, the first waterproof extension layer and the first waterproof layer are both at least one of waterproof coiled materials and waterproof coatings.
Furthermore, the laying length of the first waterproof extension layer on the roof panel is 250mm, and the laying length of the first waterproof extension layer on the side wall is 250 mm.
Furthermore, the insulating layer is made of extruded polystyrene boards, molded polystyrene boards, rock wool boards or foamed polyurethane.
Further, the thickness of the second leveling layer is 20 mm.
Further, the protective layer is concrete.
The utility model provides a pair of novel roofing seepage prevention structure compares with prior art and has following progress:
1. the utility model provides a novel roof anti-leakage structure, which comprises a roof panel and a side wall arranged at an angle with the roof panel, wherein a first waterproof extension layer, a first waterproof layer, a first leveling layer, a heat preservation layer, a second leveling layer, a second waterproof enhancement layer, a second waterproof layer and a protective layer are sequentially paved on the roof panel from bottom to top; first waterproof extension layer, first waterproof layer, the waterproof enhancement layer of second way, second way waterproof layer and protective layer one end extend to roof boarding corner respectively and upwards extend along the side wall and through the design of detachable connecting piece with the side wall rigid coupling, in the roofing structure level, the heat preservation is located in the middle of the twice waterproof layer, indoor steam entering heat preservation is avoided to the first waterproof layer in heat preservation below, rainwater entering first waterproof layer is avoided to the second way waterproof layer in heat preservation top, avoid the downward seepage of steam, solve the heat preservation because of the percolating water leads to inefficacy and the short problem of service life, second way waterproof layer and protective layer bond, the anti water channeling performance of make full use of second way waterproof layer and protective layer, reach the mesh of anti water channeling.
2. According to the novel roof anti-leakage structure provided by the utility model, the second waterproof layer is made of pre-paved waterproof material, and the second waterproof layer is bonded with the protective layer, so that the integrity of the product is not affected when the concrete protective layer is cracked; the pre-paved waterproof coiled material is not bonded with the second leveling layer, the requirements on the moisture content, the flatness and the strength of the base layer are low, the whole construction process is simple and mature to operate, and the influence of the base layer conditions and constructors on the whole waterproof layer is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is the novel roof anti-leakage structure schematic diagram (cross-sectional view) in the utility model.
Description of reference numerals:
1. a roof panel; 2. a side wall; 3. a first waterproof extensible layer; 4. a first waterproof layer; 5. a first leveling layer; 6. a heat-insulating layer; 7. a second leveling layer; 8. a second waterproof reinforcing layer; 9. a second waterproof layer; 10. and a protective layer.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1, the embodiment provides a novel roof anti-leakage structure, which includes a roof panel 1 and a side wall 2 disposed at an angle to the roof panel 1, wherein the roof panel 1 is sequentially paved with a first waterproof extension layer 3, a first waterproof layer 4, a first leveling layer 5, a heat insulation layer 6, a second leveling layer 7, a second waterproof enhancement layer 8, a second waterproof layer 9 and a protective layer 10 from bottom to top; one end of the first waterproof extension layer 3, the first waterproof layer 4, the second waterproof enhancement layer 8, the second waterproof layer 9 and the protective layer 10 respectively extend to the corner of the roof panel 1 and upwards extend along the side wall 2 and are fixedly connected with the side wall 2 through detachable connecting pieces.
The embodiment provides a novel roof anti-leakage structure, which comprises a roof panel 1 and a side wall 2 arranged at an angle with the roof panel 1, wherein a first waterproof extension layer 3, a first waterproof layer 4, a first leveling layer 5, a heat insulation layer 6, a second leveling layer 7, a second waterproof enhancement layer 8, a second waterproof layer 9 and a protective layer 10 are sequentially paved on the roof panel 1 from bottom to top; first waterproof extension layer 3, first waterproof layer 4, second waterproof enhancement layer 8, second waterproof layer 9 and protective layer 10 one end extend to 1 corner of roof boarding respectively and upwards extend along side wall 2 and through the design of detachable connecting piece with side wall 2 rigid coupling, in the roofing structure level, heat preservation 6 is located in the middle of the twice waterproof layer, first waterproof layer 4 avoids indoor steam to get into heat preservation 6 below heat preservation 6, second waterproof layer 9 avoids the rainwater to get into first waterproof layer 4 above heat preservation 6, avoid the downward seepage of steam, solve heat preservation 6 and lead to the problem that became invalid and service life is short because of the percolating water, second waterproof layer 9 bonds with protective layer 10, make full use of the anti-water channeling performance of second waterproof layer 9 and protective layer 10, reach the purpose of anti-channeling water.
As shown in fig. 1, the second waterproof layer 9 is provided as a pre-paved waterproof material in the embodiment, and the second waterproof layer 9 is bonded to the protective layer 10.
In the embodiment, the second waterproof layer 9 is made of a pre-paved waterproof material, and the second waterproof layer 9 is bonded with the protective layer 10, so that the integrity of the product is not affected when the concrete protective layer 10 cracks; the pre-paved waterproof coiled material is not bonded with the second leveling layer 7, the requirements on the moisture content, the flatness and the strength of the base layer are low, the whole construction process is simple and mature to operate, and the influence of the base layer conditions and constructors on the whole waterproof layer is avoided.
In this embodiment, the second waterproof enhancement layer 8 and the second waterproof layer 9 are bonded together; the second waterproof enhancement layer 8 is preferably a double-sided polymer self-adhesive waterproof roll, and after the double-sided polymer self-adhesive waterproof roll is adopted in the internal corner/external corner position, the pipe heel position and the floor drain position, the anti-permeation capability of the second waterproof layer 9 is enhanced, and the effect of preventing water channeling is achieved.
The second waterproof reinforcing layer 8 of the embodiment is laid on the reinforced concrete roof panel 1 with the length of 250 mm.
The first waterproof extension layer 3 and the first waterproof layer 4 of this embodiment are at least one of waterproofing membrane and waterproof coating.
The length of laying of first waterproof extension layer 3 at roof boarding 1 is 250mm in this embodiment, and first waterproof extension layer 3 lays length at side wall 2 and is 250mm, and wall root is yielding, increases thickness, improves wall root's reliability, reduces the possibility of warping.
The insulating layer 6 of this embodiment is made of extruded polystyrene board, molded polystyrene board, rock wool board or foamed polyurethane.
The second screed 7 of this embodiment has a thickness of 20 mm.
The protective layer 10 of this embodiment is concrete.
As shown in fig. 1, the novel roof anti-seepage structure of the embodiment has the following construction process: 1. cleaning a base layer: cleaning up the projections on the surface of the base layer, and repairing the unevenness by cement mortar to avoid that sharp objects damage the first waterproof layer 4 after the first waterproof layer 4 is paved; 2. and (3) processing a second waterproof enhancement layer 8: self-adhesive high-molecular waterproof coiled materials are adopted at the positions of the internal corner/external corner, the position of the pipe heel and the position of the floor drain; 3. large-surface paving waterproof coiled material (plane): paving and pasting the pre-paved waterproof coiled material on a base layer at a plane position, wherein the anti-adhesion layer faces to the concrete protective layer 10, and after the subsequent protective layer 10 is constructed, the second waterproof layer 9 is adhered to the protective layer 10, so that the purposes of completeness and no water channeling are achieved; 4. and (3) overlap edge treatment: the lap edges of the coiled materials are lapped by self adhesion or welding, the lapping width is more than 80mm, the lapping strength of the coiled materials is more than 1.0N/mm, the second waterproof layer 9 is ensured not to be torn apart in the subsequent protective layer 10 construction process, and the lapping width is more than 80mm, so that the position has enough capacity of coping with the cracking of the protective layer 10; 5. quality inspection and acceptance: checking the overlapping edge treatment condition of the whole waterproof layer, and meanwhile, timely repairing the damaged position to ensure that the waterproof layer is complete before the protective layer 10 is constructed; 6. construction of the protective layer 10: and after the waterproof layer construction is finished and the waterproof layer is qualified, constructing a protective layer 10, wherein the protective layer 10 is used as a protective layer 10 of a waterproof material to ensure the service life of the waterproof layer, and the protective layer 10 is made of concrete or cement mortar to be bonded with a pre-paved waterproof material to form a whole with the protective layer 10 from the upstream side so as to avoid water channeling.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. The utility model provides a novel roofing seepage prevention structure which characterized in that: the waterproof roof comprises a roof panel (1) and a side wall (2) arranged at an angle with the roof panel (1), wherein a first waterproof extension layer (3), a first waterproof layer (4), a first leveling layer (5), a heat-insulating layer (6), a second leveling layer (7), a second waterproof enhancement layer (8), a second waterproof layer (9) and a protective layer (10) are sequentially paved on the roof panel (1) from bottom to top; one end of the first waterproof extension layer (3), the first waterproof layer (4), the second waterproof enhancement layer (8), the second waterproof layer (9) and the protective layer (10) respectively extend to the corner of the roof panel (1), extend upwards along the side wall (2) and are fixedly connected with the side wall (2) through detachable connecting pieces.
2. The novel roofing leak protection structure of claim 1, wherein: the second waterproof layer (9) is made of a pre-paved waterproof material, and the second waterproof layer (9) is bonded with the protective layer (10).
3. The novel roofing leak protection structure of claim 2, wherein: the second waterproof enhancement layer (8) and the second waterproof layer (9) are bonded into a whole.
4. A novel roofing leak protection structure according to claim 3, characterized in that: the second waterproof enhancement layer (8) is a double-sided polymer self-adhesive waterproof roll.
5. The novel roofing leak protection structure of claim 4, wherein: the second waterproof reinforcing layer (8) is laid on the roof panel (1) with the laying length of 250 mm.
6. The novel roofing leak protection structure of claim 5, wherein: the first waterproof extension layer (3) and the first waterproof layer (4) are both made of at least one of waterproof coiled materials and waterproof coatings.
7. The novel roofing leak protection structure of claim 6, wherein: the first waterproof extension layer (3) is laid on the roof panel (1) for 250mm, and the first waterproof extension layer (3) is laid on the side wall (2) for 250 mm.
8. The novel roofing leak protection structure of claim 7, wherein: the insulating layer (6) is made of extruded polystyrene boards, molded polystyrene boards, rock wool boards or foamed polyurethane.
9. The novel roofing antiseep structure of claim 8, wherein: the thickness of the second leveling layer (7) is 20 mm.
10. The novel roofing leak protection structure of claim 9, wherein: the protective layer (10) is concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123426554.2U CN217128757U (en) | 2021-12-31 | 2021-12-31 | Novel roofing seepage prevention structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123426554.2U CN217128757U (en) | 2021-12-31 | 2021-12-31 | Novel roofing seepage prevention structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217128757U true CN217128757U (en) | 2022-08-05 |
Family
ID=82619806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123426554.2U Expired - Fee Related CN217128757U (en) | 2021-12-31 | 2021-12-31 | Novel roofing seepage prevention structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217128757U (en) |
-
2021
- 2021-12-31 CN CN202123426554.2U patent/CN217128757U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109098465A (en) | Existing building low energy consumption energy-conserving reconstruction method | |
| CN110185135B (en) | Basement bottom plate and outer wall waterproof structure and construction method | |
| CN108797903B (en) | Roof waterproof structure and construction process thereof | |
| CN107313560B (en) | Reinforced waterproof roof of archaize building and construction method thereof | |
| CN112112369A (en) | Thermal-insulating waterproof layer for roof and its dry construction method | |
| CN2929033Y (en) | External wall heat insulation structure of building water-proof and anti-cracks | |
| CN214739146U (en) | Arc roofing structure | |
| CN217128757U (en) | Novel roofing seepage prevention structure | |
| CN113529982A (en) | Deformation joint waterproof construction method | |
| CN109183839A (en) | A kind of pipe gallery Waterproof Construction Technique | |
| CN111456085A (en) | Cast-in-place concrete construction method for pipe gallery segment | |
| CN208396162U (en) | A kind of thermal isolation by water storage roofing | |
| CN207685984U (en) | A kind of overlength underground garage external wall structure | |
| CN212671027U (en) | Leakage-proof structure for terrace roof | |
| CN211113770U (en) | A roof movement joint waterproof construction for underground station | |
| CN210216937U (en) | Inverted oblique roof ridge node structure | |
| CN211312159U (en) | Water leakage prevention trestle | |
| CN207776290U (en) | A kind of horizontal type water for flat roof waterproof system falls mouth structure | |
| CN112411897A (en) | Drainage and steam exhaust structure for maintaining concrete heat-insulation roof and maintenance construction method | |
| CN217630886U (en) | Waterproof heat-preservation integrated plate | |
| CN207079823U (en) | A kind of roofing thermal-insulating board mortar cover anti-cracking structure | |
| CN218438066U (en) | Cracking prevention system for joints of internal thermal insulation composite boards | |
| CN213449608U (en) | Waterproof repairing structure for old roof | |
| CN220366489U (en) | Outer machine mounting bracket of air conditioner | |
| CN217580274U (en) | Utility tunnel waterproof construction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220805 |