CN106869259B - A kind of splash-proof laboratory sink - Google Patents
A kind of splash-proof laboratory sink Download PDFInfo
- Publication number
- CN106869259B CN106869259B CN201710088522.5A CN201710088522A CN106869259B CN 106869259 B CN106869259 B CN 106869259B CN 201710088522 A CN201710088522 A CN 201710088522A CN 106869259 B CN106869259 B CN 106869259B
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- splash
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- laboratory
- proof
- laboratory sink
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 238000004519 manufacturing process Methods 0.000 claims abstract description 21
- 230000003139 buffering effect Effects 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 7
- 239000004033 plastic Substances 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 5
- 238000005260 corrosion Methods 0.000 claims description 4
- 230000007797 corrosion Effects 0.000 claims description 4
- 239000006260 foam Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 231100000252 nontoxic Toxicity 0.000 claims description 3
- 230000003000 nontoxic effect Effects 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 230000008929 regeneration Effects 0.000 claims description 3
- 238000011069 regeneration method Methods 0.000 claims description 3
- 230000009967 tasteless effect Effects 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 abstract description 5
- 239000000126 substance Substances 0.000 abstract description 4
- 239000003963 antioxidant agent Substances 0.000 abstract description 3
- 230000003078 antioxidant effect Effects 0.000 abstract description 3
- 235000006708 antioxidants Nutrition 0.000 abstract description 3
- 230000009545 invasion Effects 0.000 abstract description 3
- 230000035699 permeability Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 14
- 239000004743 Polypropylene Substances 0.000 description 7
- 230000008859 change Effects 0.000 description 5
- 239000003651 drinking water Substances 0.000 description 5
- 235000020188 drinking water Nutrition 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000006386 memory function Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- PGLIUCLTXOYQMV-UHFFFAOYSA-N Cetirizine hydrochloride Chemical compound Cl.Cl.C1CN(CCOCC(=O)O)CCN1C(C=1C=CC(Cl)=CC=1)C1=CC=CC=C1 PGLIUCLTXOYQMV-UHFFFAOYSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000011358 absorbing material Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009408 flooring Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- NICDRCVJGXLKSF-UHFFFAOYSA-N nitric acid;trihydrochloride Chemical compound Cl.Cl.Cl.O[N+]([O-])=O NICDRCVJGXLKSF-UHFFFAOYSA-N 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
- E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
- E03C1/12—Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
- E03C1/18—Sinks, whether or not connected to the waste-pipe
- E03C1/181—Anti-splash devices in sinks, e.g. splash guards
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Sink And Installation For Waste Water (AREA)
Abstract
A kind of splash-proof laboratory sink, the technical problem to be solved is that: under the precondition for not changing existing laboratory sink, tap, water quality, hydraulic pressure, a kind of buffering energy-absorbing, anticorrosive, anti-oxidant is developed, various organic and inorganic chemicals invasions, high-low temperature resistant, good water permeability, easy to manufacture, easy cleaning, low-cost splash-proof laboratory sink are resisted.To solve above-mentioned technical problem, it adopts the technical scheme that: a kind of splash-proof laboratory sink, including laboratory sink and splash-proof liner, it is characterized in that the seamless splash-proof liner (or interior sink body) for being set with one layer of suitable laboratory requirement in the internal volume of laboratory sink, group is combined into splash-proof laboratory sink.
Description
Technical field
This patent is related to a kind of laboratory paraphernalia technical field, and in particular to a kind of splash-proof laboratory sink.
Background technique
Laboratory sink splashing is the FAQs of water utilizing process, but in promoting standards, modular Modern Laboratory
In process of construction, because of economy problems and often ignored problem, should cause lab construction engineering from humanized angle
The attention of enterprise.Laboratory sink works under certain environmental conditions, has a multi-functional technical requirements, existing sink (or
Pond) it is difficult to meet its functional requirement, existing exploitation splash-proof water basin and tap patent and commodity, it is to be used for life mostly
The basin exploitation of water, such as " the splash-proof washbowl " of Patent No. 201220497936.6, Patent No.
201220663791.2 " sink filter is blue ", " a kind of washbowl of splash-proof " of patent No. 201220471349.X, the patent No.
" a kind of hand basin of splash-proof ", " splash-back " of Patent No. 02220451.7, Patent No. for 201110319691.8
201220455253.4 " a kind of tap of splash-proof " and it is mounted on various splash-proof accessories on tap；But these are anti-
Splashing device is all not suitable for the laboratory sink of splash-proof, first is that function is different, drinking water tank is mainly used for washing, and real
The tap for testing room sink is also water supply component that laboratory needs water, be there are certain requirements to hydraulic pressure, tap height, using dispersion,
Hydraulic pressure, the existing faucet spout structure of change etc. are reduced, use for laboratory water requirement is not met；Second is that material is different, laboratory sink
It is the distribution centre of dirt, it is desirable that selection is anticorrosive, anti-oxidant, resists various organic and inorganic chemicals invasions, high-low temperature resistant, cleaning
The material production of the particular characteristics such as greasy dirt, fouling, the scuffing of anti-breakables, and drinking water tank then wants material without special substantially
Ask, such as resistance to chloroazotic acid corrodes, existing life stainless steel pond all can by strong corrosion, if the pond of general plastic production, though it is anti-
Soda acid, but not heatproof, temperature are higher than 80 DEG C, and performance will become different；Third is that laboratory sink is the standardization of laboratory bench, mould
Block component, specification such as increase sink depth, corresponding laboratory bench can also change correspondingly, so-called to lead once changing
One sends out and dynamic whole body, fourth is that being readily cleaned, being economical and practical, is low in cost, as low as suitable with protective garment；Exactly these restricted items
Part makes the exploitation of splash-proof laboratory sink have difficulty in taking a step.Although the device of existing drinking water tank splash-proof is not suitable for directly using
In laboratory sink, but the means of its splash-proof and method are worth using for reference.This patent is exactly to meet laboratory sink multi-functional
On the basis of it is required that, the method and means and the laboratory water of the practical splash-proof of one kind developed of drinking water tank splash-proof are used for reference
Slot.
Summary of the invention
The basic conception of this patent is: laboratory sink is object-field that tap S1, water S2, sink S3 are combined with waterpower F
System, from attached drawing 1 it is found that S1, S2, S3, F constitute S1-S2-F and S2-S3-F two basic object-field models, user feedback
The problem of be that hydraulic pressure is excessive, water splashes out sink when use, brings inconvenience to user；Solving splashing, there are many method and means
Can solve, but use for laboratory water has many restrictions, some methods and means are not applicable, as water discharge of water faucet to guarantee it is enough
Hydraulic pressure, structure can not be changed arbitrarily with the height from sink, and it is standard that sink material selects high density PP material mostly
Change component, and cannot change easily, since S1, S2, S3, F are constant, the problem of splash-proof be just reduced to do not change it is existing
Under object-field condition, the novel substance S4 that can reduce water flow pressure is introduced outside sink, achievees the purpose that waterproof splashes out；At me
In daily life splash-proof phenomenon can be found everywhere, when following heavy or torrential rain, rainwater falls on cement flooring, necessarily splashes, and falls
It onto the lawn/woods/sandy beach, then will not splash, artificial synthetic court will not splash, and here it is what is often said to defeat a force with a tenderness；
As long as a kind of buffering energy-absorbing material for being able to satisfy laboratory sink condition and requiring to defeat a force with a tenderness, inserting or viscous can be selected or be customized out
It is attached on sink inner surface, can effectively solve the problems, such as that sink splashes on the basis of not changing existing sink system components.
Based on above-mentioned basic ideas, this patent the technical problem to be solved is that: do not changing existing laboratory sink, water
Under faucet, water quality, the precondition of hydraulic pressure, a kind of buffering energy-absorbing, anticorrosive, anti-oxidant is developed, various organic and inorganicization are resisted
Product invasion, high-low temperature resistant, good water permeability, easy to manufacture, easy cleaning, low-cost splash-proof laboratory sink.
In order to solve the above technical problems, adopting the technical scheme that: a kind of splash-proof laboratory sink, including laboratory water
Slot and splash-proof liner, it is characterised in that one layer of suitable laboratory requirement of seamless suit in the internal volume of laboratory sink
Splash-proof liner (or interior sink body), group is combined into splash-proof laboratory sink；
Wherein the laboratory sink uses the existing any sink used, including PP laboratory sink or stainless steel reality
Test room sink or ceramic laboratory sink or the laboratory sink of other materials production；
Wherein the liner select with a thickness of 5 ㎜ ±, 300 ㎏ of density/m3±, there is appropriate hardness, is flexibility, heat-resisting
Property, corrosion-resistant, oil resistivity, thermal insulation, light specific gravity, high glaze, high resilience (shape memory function), antidetonation resistance to compression, buffering
It is energy-absorbing, non-toxic and tasteless, regeneration, Reusability, environmentally protective, integrate structural strength and multi-functional semi-rigid EPP
Foamed plastics (foaming polypropylene) production；Compared with other foamed materials, there is the excellent performance that it is as shown in the table:
1 EPP of table is compared with the performance of other main foamed plastics
From the performances of above-mentioned several foamed plastics relatively in, be apparent from EPP best performance, be production splash-proof laboratory
The ideal material of sink liner, reason is that
The first, EPP is the PP material to have foamed, because of its porosity, large specific surface area, softness, has buffering water impact
The energy-absorbing function of power, suitable for making are the splash-proof sink tempered toughness with gentleness；
The second, EPP toughness is superpower, and the deformation that is hit will not be abraded, the object being in contact with it of damaging by rear resilient
Body has preferable protective effect to the surface of existing sink and mitigates the damaged condition of washing experiment appliance；
Third, EPP are non-breakable；Easy recycling and reusing is easily decomposed, and product is without the ingredient that is harmful to the human body, even if 400
Any chemical reaction will not occur at a high temperature of degree, no any harmful substance release, is excellent green material；
4th, EPP density is low, and the liner of production is light-weight, has substantially no effect on the volume of sink, real with large size, medium size PP
It tests for the sink of room, volume reducing rate and net weight increment rate after measuring and calculating effluent trough suit liner, as shown in table 2:
2 PP laboratory sink of table is set with rear volume reducing rate and net weight increment rate after EPP liner
Show after being set with EPP liner from the results of measuring of table 2, compared with raw water slot, volume reducing rate < 5%, net weight increases
Add rate < 5%, the normal use of existing sink is had no effect substantially；
5th, EPP density and hardness, intensity are adjustable, according to the needs of users, can produce surface smoothness, easy cleaning
The liner for meeting use for laboratory water requirement；
6th, EPP processing performance is excellent, and cost of manufacture is cheap, meet Modern Laboratory with material requirement, it is easy to spread to answer
With.
7th, using its high resilience, it is easy to be tightly attached on sink inner surface, and easy to loading and unloading, when suit, firmly one
Pressure, can be tightly attached on sink inner surface, when disassembly, firmly one draw, convenient to pull out from sink, when not stressing, and restore original
Volumetric shape.
The wherein EPP liner preferred foams method of forming production, step is that EPP raw material is foamed into different multiplying in advance
Bulky grain, then bulky grain is sent in die for inner, it heats, squeezes tightly, particle surface is adhered to one another at liner through high-temperature steam
Whole, for convenient for being set with and dismantling liner, the outer volume length and width of liner and the length of sink internal volume are identical as width, height is slightly higher
In the height of sink, it is sleeved on sink top edge convenient for top edge.
The wherein combination of the laboratory sink and splash-proof liner, uses two ways, first is that in existing laboratory water
Seamless suit splash-proof liner in slot internal volume；Second is that newly-built laboratory sink, it is compound with sink that liner is directly provided by producer
The splash-proof laboratory sink being integrated reduces production process, reduces cost of manufacture.
This patent is to make for the demand of laboratory sink, but can also be used for drinking water tank or basin or sink, function
Effect is better than existing splash proof device, at least following technical effect: first is that acidproof, alkaline-resisting, resistance to greasy dirt, easy cleaning；Second is that protecting
It is injury-free to protect pond ontology, plays protective film；Third is that it is environmentally friendly, it does not generate any adverse effect to people, is excellent environment
Friendly material is suitable for advocating application in life appliance field；Fourth is that it is light, be set with, dismantle it is very convenient, it is at low cost, warp
Ji material benefit.
Detailed description of the invention
Fig. 1 is the basic conception figure of the splash-proof laboratory sink of deposit source analysis method parsing in TRIZ；
Fig. 2 is that splash-proof laboratory sink faces the schematic diagram of the section structure；
Fig. 3 is that splash-proof laboratory sink liner faces the schematic diagram of the section structure；
Fig. 4 is splash-proof laboratory sink overlooking structure diagram.
Technical solution is embodied
In Fig. 2,3,4,1 is laboratory sink, and 2 be splash-proof liner.
It is described with reference to the drawings, specific technical solution of implementing is: a kind of splash-proof laboratory sink, including laboratory sink
1 with splash-proof liner 2, it is characterised in that the one layer of suitable laboratory use of seamless suit is wanted in the internal volume of laboratory sink 1
The splash-proof liner 2(or interior sink body asked), group is combined into splash-proof laboratory sink；
Wherein the laboratory sink 1 uses the existing any sink used, including PP laboratory sink or stainless steel
Laboratory sink or ceramic laboratory sink or the laboratory sink of other materials production；
The wherein splash-proof liner 2, select with a thickness of 5 ㎜ ±, 300 ㎏ of density/m3±, with excellent flexibility,
Heat resistance, corrosion-resistant, oil resistivity, thermal insulation, resistance to Impulsive, high glaze, high resilience (shape memory function), antidetonation are anti-
It is pressure, buffering energy-absorbing, non-toxic and tasteless, regeneration, durable, environmentally protective, integrate structural strength and it is multi-functional partly
Hard EPP foam plastic production；
The wherein production method preferred foams method of forming of the splash-proof liner 2, step are in advance to be foamed into EPP raw material
The bulky grain of different multiplying, then bulky grain is sent in die for inner, it heats, squeezes tightly, particle surface is mutual through high-temperature steam
It is bonded to liner entirety, for convenient for being set with and dismantling, the outer volume length and width of splash-proof liner 2 and 1 internal volume of laboratory sink
Length and width is consistent, and height is slightly above the height of sink 1, so that top edge is sleeved on 1 top edge of laboratory sink, utilizes
The EPP splash-proof liner 2 made seamless is sleeved in 1 internal volume of laboratory sink by its high resilience.
Wherein the splash-proof liner 2 is sleeved in laboratory sink 1, basic to the normal use of existing laboratory sink
It has no effect, compared with former laboratory sink, volume reducing rate < 5%, net weight increment rate < 5%；
The wherein combination of the laboratory sink 1 and splash-proof liner 2, uses two ways, first is that in existing laboratory
Splash-proof liner is set in 1 internal volume of sink；Second is that newly-built laboratory sink 1, it is compound with sink that liner is directly provided by producer
The splash-proof laboratory sink being integrated reduces production process, reduces cost of manufacture；
Wherein the handling method of the laboratory sink 1 and splash-proof liner 2 is simple, when suit, using its high resilience,
A firmly pressure, splash-proof liner 2 is tightly attached on the inner surface of laboratory sink 1, when disassembly, firmly one is drawn, splash-proof liner 2
It convenient can be pulled out again from laboratory sink 1, when not stressing, splash-proof liner 2 restores original volumetric shape again.
This patent is to make for the demand of laboratory sink, but can also be used for domestic water pond or basin or sink.
Claims (1)
1. a kind of splash-proof laboratory sink, including laboratory sink (1) and splash-proof liner (2), it is characterised in that testing
The splash-proof liner (2) of the seamless suit suitable laboratory requirement of one floor in the internal volume of room sink (1), group is combined into splash-proof
Laboratory sink；
Wherein the laboratory sink (1) uses the existing any sink used, including PP laboratory sink or stainless steel reality
Test room sink or ceramic laboratory sink；
The wherein splash-proof liner (2), select with a thickness of 5 ㎜ ±, 300 ㎏ of density/m3±, with excellent flexibility, resistance to
Hot, corrosion-resistant, oil resistivity, thermal insulation, wearability, high glaze, high resilience, antidetonation resistance to compression, buffering energy-absorbing, it is non-toxic and tasteless,
It is regeneration, environmentally protective, integrate structural strength and multi-functional semi-rigid EPP foam plastic production；
Wherein the production method of the splash-proof liner (2) selects foam-formed method, and EPP raw material is first foamed into different multiplying
Bulky grain, then bulky grain is sent in splash-proof die for inner, it heats, squeezes tightly, particle surface is adhered to one another through high-temperature steam
It is whole at splash-proof liner；For convenient for being set with and dismantling, the outer volume length and width of splash-proof liner (2) and laboratory sink (1)
Internal volume length and width is consistent, and height is slightly above the height of laboratory sink (1), so that the top edge of splash-proof liner (2) is set with
On the top edge of laboratory sink (1)；
Wherein the splash-proof liner (2) is sleeved in laboratory sink (1), basic to the normal use of existing laboratory sink
It has no effect, compared with original laboratory sink, the volume reducing rate < 5% of splash-proof laboratory sink, net weight increases
Rate < 5%；
The wherein combination of the laboratory sink (1) and splash-proof liner (2), uses two ways, first is that in existing laboratory
Splash-proof liner (2) are set in sink (1) internal volume；Second is that newly-built laboratory sink, directly provides EPP liner and water by producer
The splash-proof laboratory sink that slot is complex as a whole reduces production process, reduces cost of manufacture；
The wherein handling method of the laboratory sink (1) and splash-proof liner (2) are as follows: when suit, firmly one press, by splash-proof
Liner (2) is tightly attached on laboratory sink (1) inner surface, when disassembly, firmly one is drawn, splash-proof liner (2) can facilitate from reality again
Room sink (1) pull-out is tested, when not stressing, splash-proof liner (2) restores original volumetric shape again.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2016110090573 | 2016-11-16 | ||
| CN201611009057 | 2016-11-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106869259A CN106869259A (en) | 2017-06-20 |
| CN106869259B true CN106869259B (en) | 2019-08-20 |
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ID=59166725
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710088522.5A Active CN106869259B (en) | 2016-11-16 | 2017-02-20 | A kind of splash-proof laboratory sink |
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| Country | Link |
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| CN (1) | CN106869259B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59121072U (en) * | 1983-02-04 | 1984-08-15 | 渡辺 英明 | Water splash prevention device |
| JP3157312U (en) * | 2009-11-24 | 2010-02-12 | 有限会社大泉合成 | Water splash prevention mat for sink |
| CN202187389U (en) * | 2011-07-07 | 2012-04-11 | 陈仲礼 | Novel anti-spattering ceramic basin |
| CN103622612A (en) * | 2012-08-27 | 2014-03-12 | 陆飞 | Improved washbasin for wash |
| CN103788502A (en) * | 2012-10-29 | 2014-05-14 | 中国石油化工股份有限公司 | Polypropylene foaming bead formed body and preparation method thereof |
| CN203841581U (en) * | 2014-02-21 | 2014-09-24 | 黄允磊 | Anti-slip anti-splashing water basin |
| CN104328829A (en) * | 2014-10-20 | 2015-02-04 | 谭映林 | Splash-proof lavatory pan |
-
2017
- 2017-02-20 CN CN201710088522.5A patent/CN106869259B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59121072U (en) * | 1983-02-04 | 1984-08-15 | 渡辺 英明 | Water splash prevention device |
| JP3157312U (en) * | 2009-11-24 | 2010-02-12 | 有限会社大泉合成 | Water splash prevention mat for sink |
| CN202187389U (en) * | 2011-07-07 | 2012-04-11 | 陈仲礼 | Novel anti-spattering ceramic basin |
| CN103622612A (en) * | 2012-08-27 | 2014-03-12 | 陆飞 | Improved washbasin for wash |
| CN103788502A (en) * | 2012-10-29 | 2014-05-14 | 中国石油化工股份有限公司 | Polypropylene foaming bead formed body and preparation method thereof |
| CN203841581U (en) * | 2014-02-21 | 2014-09-24 | 黄允磊 | Anti-slip anti-splashing water basin |
| CN104328829A (en) * | 2014-10-20 | 2015-02-04 | 谭映林 | Splash-proof lavatory pan |
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| Publication number | Publication date |
|---|---|
| CN106869259A (en) | 2017-06-20 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A kind of anti splash water tank in laboratory Effective date of registration: 20201216 Granted publication date: 20190820 Pledgee: Changsha bank Limited by Share Ltd. Xiangjiang New District sub branch Pledgor: HUNAN ZHENGHAI MODERN LABORATORY EQUIPMENT Co.,Ltd. Registration number: Y2020980009357 |
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Date of cancellation: 20231220 Granted publication date: 20190820 Pledgee: Changsha bank Limited by Share Ltd. Xiangjiang New District sub branch Pledgor: HUNAN ZHENGHAI MODERN LABORATORY EQUIPMENT CO.,LTD. Registration number: Y2020980009357 |
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Denomination of invention: A splash proof laboratory sink Effective date of registration: 20231222 Granted publication date: 20190820 Pledgee: Changsha bank Limited by Share Ltd. Xiangjiang New District sub branch Pledgor: HUNAN ZHENGHAI MODERN LABORATORY EQUIPMENT CO.,LTD. Registration number: Y2023980073591 |