CN201596273U - Fire retardant ventilating gate device - Google Patents
Fire retardant ventilating gate device Download PDFInfo
- Publication number
- CN201596273U CN201596273U CN2010291660287U CN201029166028U CN201596273U CN 201596273 U CN201596273 U CN 201596273U CN 2010291660287 U CN2010291660287 U CN 2010291660287U CN 201029166028 U CN201029166028 U CN 201029166028U CN 201596273 U CN201596273 U CN 201596273U
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- Prior art keywords
- fire
- low
- gate device
- temperature expansion
- fireprotection layer
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- Expired - Lifetime
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- 239000003063 flame retardant Substances 0.000 title abstract 4
- 238000009423 ventilation Methods 0.000 claims abstract description 61
- 230000004888 barrier function Effects 0.000 claims description 36
- 230000002787 reinforcement Effects 0.000 claims description 20
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 239000010439 graphite Substances 0.000 claims description 4
- 229910002804 graphite Inorganic materials 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 11
- 239000000463 material Substances 0.000 abstract description 8
- 239000003517 fume Substances 0.000 abstract description 2
- 239000000779 smoke Substances 0.000 abstract description 2
- 239000003053 toxin Substances 0.000 abstract 2
- 231100000765 toxin Toxicity 0.000 abstract 2
- 235000019504 cigarettes Nutrition 0.000 description 27
- 239000002574 poison Substances 0.000 description 24
- 231100000614 poison Toxicity 0.000 description 24
- 229920000049 Carbon (fiber) Polymers 0.000 description 5
- 239000004917 carbon fiber Substances 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000004079 fireproofing Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000007480 spreading Effects 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 229910002114 biscuit porcelain Inorganic materials 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000010455 vermiculite Substances 0.000 description 1
- 229910052902 vermiculite Inorganic materials 0.000 description 1
- 235000019354 vermiculite Nutrition 0.000 description 1
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Abstract
The utility model discloses a fire retardant ventilating gate device, comprising an outer frame and a fence arranged in the outer frame and forming a ventilation clearance, a low-temperature expansion fire-proof layer on the outer surface of the fence. At the low temperature period when the fire happens but smoke toxin does not generate, the fireproof material of the low-temperature expansion fire-proof layer on the adjacent fences for forming each ventilation clearance may expand, therefore the adjacent fences are closely jointed together and the ventilation clearance of the whole ventilating gate device is completely blocked, so as to ensure that: the fire, heat, fume and toxin do not disperse to the adjacent room and the structural integrity of the fire retardant ventilating gate device is ensured; prevent the ventilating gate device from falling off the building, cut off the fire spread and have good fire retardant effect.
Description
Technical field
The relevant ventilation sluice gate of the utility model device, relevant especially a kind of back-fire relief ventilation sluice gate device.
Background technology
Fire is one of major disaster that threatens human life's property safety always.The harm that fire produces relates to pry-, cigarette, malicious four major parts, and wherein cigarette, two factors of poison are to cause the first cause of personnel's casualties, also are the most challenging factors in the fire safety evaluating countermeasure.
The fire cigarette, the poison because of the density low quality light, because of spreading, skewered forms rapid diffusion after sprouting wings, for effectively fire being controlled at local space, avoid causing fire spreading, implementing anti-blocking to the possible the evolving path of various cigarette poison will be very important fire prevention measure with obstruction and even with the discharge of cigarette poison.
After fire takes place, the cigarette of various material combustions, poison will raise up in the scene of a fire, on the space layout and built in system layout of building, first most probable path that cigarette, poison seal in other space is exactly for example air-conditioning, the diffusion openings of ventilation usefulness etc. in indoor room, workshop of ventilating opening, usually at these ventilating opening places ventilation sluice gate device is set at present, ventilation sluice gate device comprises metal outer frame, is located at the barrier that forms ventilation gap in the metal outer frame, realize ventilation function by ventilation gap, realize necessary decoration effect by barrier simultaneously.If can play the effect of stopping cigarette, poison at first with these ventilating opening shutoff after fire takes place, control the fire skewered effectively and spread to other space, the guarantee of lives and properties there is lifting greatly.
Be that cigarette, poison are stopped in the scope of the local scene of a fire in the prior art, resistance cigarette valve can be set in the wind channel tube of ventilation sluice gate device, close with linkage mode interlock control, also have the unit of discharging fume to be set in the wind channel tube of room ventilation sluice gate device, also in the fireproof blocking engineering of passive fire safety, additionally adopt plug that ventilating opening is blocked in addition the export-oriented suction discharge of cigarette poison.But because of fire takes place very fast, the buildings in general fire is raised to 1000 ℃ at most only 2 hours, and the incident hydrocarbon fires in place such as petrochemical industry, traffic tunnel can reach 1000 ℃ in 5 minutes, aforementioned resistance cigarette valve and the high heat of the smoke evacuation very fast high temperature by the meeting fire of unit that is used to stop the cigarette poison is burnt, and loses the obstruction function; And with plug shutoff ventilating opening, limited fire fighting personnel's response time, all can not accomplish timely shutoff, cigarette, poison had sealed in other space before suing and labouring.
As seen, the main thought of stopping cigarette, poison in the prior art is at the pipe-line system in the ventilating opening, does not make improvement at ventilation sluice gate device itself.The air circulation mouth that the ventilating opening that present constructure ventilation is used, air-conditioning system are used does not all have the effect that real formation is stopped fast, protected really, and the cigarette poison in the scene of a fire can not stopped at local space in the moment that fire begins.
Though the existing patent document of prior art has disclosed the technology of coating expanding fire-proof paint on the latticed grid sheet of dynamo-electric cabinet outlet ventilation, when the back takes place and is burned to this to be coated with expanding fire-proof paint in fire, expanding fire-proof paint expands with the detailed catalogue holes blocking between latticed grid sheet, reaches the obstruct purpose to stop the purpose that flame burns dynamo-electric cabinet inner member.But because the intumescent coating of this rack is for example just can expand reaction in the temperature more than 200～250 degrees centigrade in middle temperature and high temperature; expansion start temperature height; if when this type of intumescent coating is applied to building; when reaching expansion temperature; scene of a fire space temperature has risen high; a large amount of cigarette poison disengage, and to the person with cause very big harm, degree of protection is limited.
The utility model content
Technical problem to be solved in the utility model provides a kind of back-fire relief ventilation sluice gate device, can be after fire takes place the shortest moment, the cigarette poison is stopped in the scope of the scene of a fire, avoid the cigarette poison to other space skewered, ensure personal safety as well as the property safety.
A kind of back-fire relief ventilation sluice gate device that the utility model provides comprises housing and is located at the interior barrier of housing that form ventilation gap between the barrier, the outer surface of described barrier is provided with the low-temperature expansion fireprotection layer.
In preferred embodiment, low-temperature expansion fireprotection layer between the outer surface of described low-temperature expansion fireprotection layer and described barrier, being provided with.
In preferred embodiment, between the outer surface of described low-temperature expansion fireprotection layer and described barrier, be provided with the expansible fireproof layer.
In preferred embodiment, low-temperature expansion fireprotection layer and expansible fireproof layer during ecto-entad is provided with in regular turn between the outer surface of described low-temperature expansion fireprotection layer and described barrier.
In preferred embodiment, be connected with reinforcement in a side of described barrier, be provided with the low-temperature expansion fireprotection layer at the outer surface of described reinforcement.
In preferred embodiment, low-temperature expansion fireprotection layer between the outer surface of described reinforcement and the described low-temperature expansion fireprotection layer on it, being provided with.
In preferred embodiment, between the outer surface of described reinforcement and the described low-temperature expansion fireprotection layer on it, be provided with the expansible fireproof layer.
In preferred embodiment, low-temperature expansion fireprotection layer and expansible fireproof layer during ecto-entad is provided with in regular turn between the outer surface of described reinforcement and the described low-temperature expansion fireprotection layer on it.
In preferred embodiment, described low-temperature expansion fireprotection layer is the low-temperature expansion graphite linings.
According to unified design, the utility model also provides a kind of back-fire relief ventilation sluice gate device, comprises housing and is located at the interior barrier of housing, forms ventilation gap between the barrier, low-temperature expansion fireprotection layer or expansible fireproof layer during the outer surface of described barrier is provided with.In the fire generating process, ventilation sluice gate device can be shut, guarantee the integrality of ventilation sluice gate apparatus structure, help the security that the passive fire prevention stage guarantees that fire fighting is on-the-spot, reduce fire hazard.
According to such scheme, the utility model is significant with respect to the effect of existing structure: back-fire relief ventilation sluice gate device of the present utility model in breaking out of fire but also arrives the low temperature period that produces the cigarette poison, the fire proofing material that constitutes the low-temperature expansion type fireprotection layer on the adjacent barrier of each ventilation slit can expand, thereby make adjacent barrier fluid-tight engagement together, the ventilation gap of whole ventilation sluice gate device is all stopped up, guarantee the fire of fire compartments, heat, cigarette, poison can not gone here and there to adjacent room, and also can guarantee the structural intergrity of fire-proof type ventilation unit, can not come off from building, stop fire spread, back-fire relief effect excellence.
Description of drawings
Fig. 1 is the schematic diagram of the utility model embodiment 1.
Fig. 2 is the schematic diagram of embodiment after fire takes place of Fig. 1.
Fig. 3 is the schematic diagram of the utility model embodiment 2.
Fig. 4 is the schematic diagram of the utility model embodiment 4.
The specific embodiment
As shown in Figure 1, the utility model provides a kind of back-fire relief ventilation sluice gate device, comprise housing 1 and be located in the housing 1 and form the barrier 2 of ventilation gap 3, housing 1 is rectangular to be made by metal material system, pottery, the higher relatively material of high molecular polymer equal strength, the barrier 2 of riser form and transverse sheet form distributes as net shape, and is provided with the low-temperature expansion fireprotection layer at the outer surface of barrier 2.
Low-temperature expansion fireprotection layer in the utility model is to be formed by commercially available low-temperature expansion fire proofing material, so-called " low temperature " is that the expansion start temperature that industry is defined in below 90～150 ℃ can expand, for example the low-temperature expansion graphite produced of U.S. CLOSITE company just can satisfy designing requirement of the present utility model.The expansion start temperature is middle low-temperature expansion fire proofing material at 200～250 ℃, and the expansion start temperature is higher than 300 ℃ and is the just conventional expansion fireproof material of high temperature expansion fireproof material.
As shown in Figure 2; when fire just takes place; the intensity of a fire still is in and does not produce a large amount of cigarettes; the low temperature period of poison; low-temperature expansion fireprotection layer on the barrier 2 can expand and form fire-resistant sponge shape carbon fiber tissue 5; thereby constitute on the adjacent barrier 2 of ventilation gap 3 promptly can fluid-tight engagement together; whole ventilation gaps 3 of whole ventilation sluice gate device all can be stopped up; guarantee the fire of fire compartments; heat; cigarette; poison is cigarette particularly; poison can not gone here and there to adjacent room; and also can guarantee the structural intergrity of fire-proof type ventilation unit; can not come off from building; stop fire spread; can be with cigarette in the very first time that fire takes place; the poison shutoff is at local space, and is most important to the protection personal safety as well as the property safety; back-fire relief effect excellence.
In the utility model, described low-temperature expansion fireprotection layer is the low-temperature expansion graphite linings.Certainly other commercially available low-temperature expansion mica layer or low-temperature expansion vermiculite bisque or the like all can adopt, can be lower than about 90 degree or more the initial temperature of low temperature expand with the refractory material that plays the fire-resisting protection effect and all can select for use.
In a preferred embodiment, between the outer surface of low-temperature expansion fireprotection layer and barrier 2, also be provided with in the low-temperature expansion fireprotection layer.Fire reach surpass 200 ℃ for example during the initial temperature about 250 ℃ should in low-temperature expansion fireprotection layer expand once again, the sponge carbon fiber tissue that the back produces even previous low-temperature expansion fireprotection layer expands comes off because of burning, the sponge carbon fiber tissue that produces after also can being expanded by low temperature fireprotection layer in this is with ventilation gap 3 further shutoff, make the ventilating opening closure really tight more, by low temperature and middle low temperature double expansion process, with the integrality of further maintenance ventilation sluice gate apparatus structure.
In another preferred embodiment, between the outer surface of low-temperature expansion fireprotection layer and barrier, be provided with the expansible fireproof layer.This expansible fireproof layer expands once again when fire reaches the higher temperature that surpasses more than 300 ℃, the sponge carbon fiber tissue that the back produces even previous low-temperature expansion fireprotection layer expands comes off because of burning, the sponge carbon fiber tissue that produces after also can being expanded by this fireprotection layer is with ventilation gap 3 further shutoff, make the ventilating opening closure really tight more, by low temperature and high temperature double expansion process, can further safeguard the integrality of ventilation sluice gate apparatus structure.
In most preferred embodiment, low-temperature expansion fireprotection layer and expansible fireproof layer during ecto-entad is provided with in regular turn between the outer surface of low-temperature expansion fireprotection layer and barrier, thereby make three layers of fireprotection layer formation temperature reaction gradient, the progressive low temperature of temperature according to scene of a fire burning, middle temperature, three grades of expansions take place in hot stage, continually strengthen the uniformity and the solidity of the carbonization of expanding layer open surfaces, shutoff is really tight more, can safeguard the structural intergrity of ventilation sluice gate device, thermal insulation and air-tightness all can reach enough fire resistance periods, particularly for vertically to ventilation sluice gate device, because can keep the integrality of structure, therefore can better prevent the danger of slump, scene of a fire safety is had important contribution.
In a preferred embodiment, side at barrier 2 is connected with reinforcement 4, reinforcement 4 is cross, outer surface at reinforcement 4 is provided with the low-temperature expansion fireprotection layer, after the low-temperature expansion fireprotection layer of reinforcement 4 outer surfaces is expanding, can the whole ventilation sluice gate device that area is relatively large separate and be less relatively a plurality of surface areas, help guaranteeing the integrality of structure.Can certainly be provided with low-temperature expansion fireprotection layer, middle low-temperature expansion fireprotection layer and expansible fireproof layer at the outer surface ecto-entad of reinforcement 4 in regular turn, thereby can be in beginning, centre and the highest temperature stage that fire takes place, realize that low temperature, middle low temperature and three grades of asymptotic gradients of high temperature expand, to guarantee the integrality of ventilation sluice gate apparatus structure better, guarantee scene of fire safety.In addition, also can be provided with low-temperature expansion fireprotection layer, middle low-temperature expansion fireprotection layer in regular turn at the outer surface ecto-entad of reinforcement 4, realize low temperature and middle low temperature double expansion, perhaps the outer surface ecto-entad at reinforcement 4 is provided with low-temperature expansion fireprotection layer and warm expansible fireproof layer in regular turn, low temperature and high temperature double expansion in the realization.Obviously, low-temperature expansion fireprotection layer or expansible fireproof layer in also can being provided with separately in the utility model at the outer surface of reinforcement 4, proceed to a certain degree middle low temperature or hot stage in burning, come the shutoff ventilating opening, keep the integrality of ventilation sluice gate apparatus structure.
As shown in Figure 1, 2, primary structure, principle and the effect of this embodiment and embodiment 1 are basic identical, no longer repeat, and difference is: low-temperature expansion fireprotection layer or expansible fireproof layer in the outer surface of barrier 2 is provided with.Though this embodiment initial temperature is higher relatively, though can go here and there to other space by stream at some cigarette poison of fire incipient stage, but ventilation sluice gate device of the present utility model is at the middle gentle hot stage of fire, still the ventilation gap of whole ventilation sluice gate device all can be stopped up, reducing the cigarette poison spreads, most critical be to make whole ventilation sluice gate device have enough fire resistances, the integrality that keeps structure, can not come off from building, help guaranteeing the security that fire fighting is on-the-spot, reduce fire hazard in the follow-up passive fire prevention stage.
As shown in Figure 3, primary structure, principle and the effect of this embodiment and embodiment 1,2 are basic identical, and difference is: housing 1 is square, and the barrier 2 in it also is vary in size square and is nested with one heart, reinforcement 4 is M shape and distributes, and detailed content is no longer described.
As shown in Figure 4, primary structure, principle and the effect of this embodiment and embodiment 1,2 are basic identical, and difference is: housing 1 is rounded, and the barrier 2 in it also is the circle that varies in size and is nested with one heart, reinforcement 4 is M shape and distributes, and detailed content is no longer described.
The above; it only is the specific embodiment of the present utility model; certainly can not limit the scope that the utility model is implemented with this; all equivalent variations and modifications of doing according to content of the present utility model; be any other people be provided with low temperature, middle low temperature or high temperature expansible fireproof layer at the barrier outer surface of ventilation sluice gate device, just should belong to protection domain of the present utility model.
Claims (10)
1. back-fire relief ventilation sluice gate device comprises housing and is located in the housing and forms the barrier of ventilation gap that it is characterized in that: the outer surface of described barrier is provided with the low-temperature expansion fireprotection layer.
2. back-fire relief ventilation sluice gate device according to claim 1 is characterized in that: low-temperature expansion fireprotection layer in being provided with between the outer surface of described low-temperature expansion fireprotection layer and described barrier.
3. back-fire relief ventilation sluice gate device according to claim 1 is characterized in that: be provided with the expansible fireproof layer between the outer surface of described low-temperature expansion fireprotection layer and described barrier.
4. back-fire relief ventilation sluice gate device according to claim 1 is characterized in that: low-temperature expansion fireprotection layer and expansible fireproof layer during ecto-entad is provided with in regular turn between the outer surface of described low-temperature expansion fireprotection layer and described barrier.
5. back-fire relief ventilation sluice gate device according to claim 1, it is characterized in that: the side at described barrier is connected with reinforcement, is provided with the low-temperature expansion fireprotection layer at the outer surface of described reinforcement.
6. back-fire relief ventilation sluice gate device according to claim 5 is characterized in that: low-temperature expansion fireprotection layer in being provided with between the outer surface of described reinforcement and the described low-temperature expansion fireprotection layer on it.
7. back-fire relief ventilation sluice gate device according to claim 5 is characterized in that: be provided with the expansible fireproof layer between the outer surface of described reinforcement and the described low-temperature expansion fireprotection layer on it.
8. back-fire relief ventilation sluice gate device according to claim 5 is characterized in that: low-temperature expansion fireprotection layer and expansible fireproof layer during ecto-entad is provided with in regular turn between the outer surface of described reinforcement and the described low-temperature expansion fireprotection layer on it.
9. according to any described back-fire relief ventilation sluice gate device in the claim 1～8, it is characterized in that: described low-temperature expansion fireprotection layer is the low-temperature expansion graphite linings.
10. a back-fire relief ventilation sluice gate device comprises housing and is located at the interior barrier of housing, forms ventilation gap between the barrier, it is characterized in that: low-temperature expansion fireprotection layer or expansible fireproof layer during the outer surface of described barrier is provided with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010291660287U CN201596273U (en) | 2010-02-03 | 2010-02-03 | Fire retardant ventilating gate device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010291660287U CN201596273U (en) | 2010-02-03 | 2010-02-03 | Fire retardant ventilating gate device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201596273U true CN201596273U (en) | 2010-10-06 |
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ID=42807316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010291660287U Expired - Lifetime CN201596273U (en) | 2010-02-03 | 2010-02-03 | Fire retardant ventilating gate device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201596273U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105169582A (en) * | 2015-10-10 | 2015-12-23 | 上海外高桥造船海洋工程设计有限公司 | Fireproof air brake |
| CN107284675A (en) * | 2016-04-12 | 2017-10-24 | 哈尔滨飞机工业集团有限责任公司 | A kind of fire proof construction divulged information |
| CN110478831A (en) * | 2019-08-05 | 2019-11-22 | 清华大学 | Lithium ion battery firebreak device |
| CN113216649A (en) * | 2021-05-17 | 2021-08-06 | 长沙理工大学 | Stair installation system |
-
2010
- 2010-02-03 CN CN2010291660287U patent/CN201596273U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105169582A (en) * | 2015-10-10 | 2015-12-23 | 上海外高桥造船海洋工程设计有限公司 | Fireproof air brake |
| CN107284675A (en) * | 2016-04-12 | 2017-10-24 | 哈尔滨飞机工业集团有限责任公司 | A kind of fire proof construction divulged information |
| CN107284675B (en) * | 2016-04-12 | 2019-11-15 | 哈尔滨飞机工业集团有限责任公司 | A kind of fire proof construction divulged information |
| CN110478831A (en) * | 2019-08-05 | 2019-11-22 | 清华大学 | Lithium ion battery firebreak device |
| CN113216649A (en) * | 2021-05-17 | 2021-08-06 | 长沙理工大学 | Stair installation system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: BEIJING KELU INDUSTRIAL EQUIPMENT CO., LTD. Free format text: FORMER OWNER: MU LEI Effective date: 20110503 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20110503 Address after: 100101 Beijing City, Chaoyang District Huizhong Lane No. 103 Rock era center B1211 Patentee after: Beijing Kelu Industrial Equipment Co., Ltd. Address before: 100101 Beijing City, Chaoyang District Huizhong Lane No. 103 Rock era center B1211 Patentee before: Mu Lei |
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| TR01 | Transfer of patent right |
Effective date of registration: 20180322 Address after: 101102 Beijing City, Tongzhou District Majuqiao Liando U Valley East 5K three layer Patentee after: Mu Lei Address before: 100101 Beijing City, Chaoyang District Huizhong Lane No. 103 Rock era center B1211 Patentee before: Beijing Kelu Industrial Equipment Co., Ltd. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180413 Address after: 101102 Beijing City, Tongzhou District Majuqiao Liando U Valley East 5K three layer Patentee after: Beijing Ruo Jin Feng Technology Co., Ltd. Address before: 101102 Beijing City, Tongzhou District Majuqiao Liando U Valley East 5K three layer Patentee before: Mu Lei |
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| TR01 | Transfer of patent right |
Effective date of registration: 20180703 Address after: 101102 Majuqiao, Tongzhou District, Beijing, Beijing Patentee after: Mu Lei Address before: 101102 Beijing Tongzhou District Majuqiao East U Valley East 5K three layer Patentee before: Beijing Ruo Jin Feng Technology Co., Ltd. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190621 Address after: 101102 Beijing Tongzhou District Majuqiao East U Valley East 5K three layer Patentee after: Beijing Ruo Jin Feng Technology Co., Ltd. Address before: 101102 Majuqiao, Tongzhou District, Beijing, Beijing Patentee before: Mu Lei |
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| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101006 |
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