CN206650981U - A kind of electronic equipment casing - Google Patents
A kind of electronic equipment casing Download PDFInfo
- Publication number
- CN206650981U CN206650981U CN201720410621.6U CN201720410621U CN206650981U CN 206650981 U CN206650981 U CN 206650981U CN 201720410621 U CN201720410621 U CN 201720410621U CN 206650981 U CN206650981 U CN 206650981U
- Authority
- CN
- China
- Prior art keywords
- closed
- casing
- low boiling
- working fluid
- loop capillary
- 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.)
- Active
Links
Abstract
The utility model embodiment provides a kind of electronic equipment casing, casing ontology encloses to form cavity, cavity is used for the prototype part for placing electronic equipment, there are one or more closed-loop capillary roads in casing ontology, low boiling working fluid is filled with closed-loop capillary road, closed-loop capillary road and the low boiling working fluid are used to radiate for the prototype part of the electronic equipment, and the bore in closed-loop capillary road is 100 300 μm.When electronic equipment adstante febre, the heated vaporization of low boiling working fluid, quick diffusion, be cooled liquefaction at electronic device shell low temperature, and reflux cycle is carried out in capillary channel, heat transfer efficiency is improved by way of the cold heat exchange of liquid, the radiating effect of electronic device shell greatly improves, simultaneously as larger pipeline is not present in electronic device shell, so the physical strength of electronic device shell will not be affected, application prospect is very extensive.
Description
Technical field
Technical field of electronic equipment is the utility model is related to, more particularly to a kind of electronic equipment casing.
Background technology
Electronics technology develops rapidly, and mobile phone, computer etc. have almost turned into electronics essential in people's daily life and set
It is standby.At work, the part such as processor, battery can produce heat to these electronic equipments, influence electronic equipment operational efficiency and
Life-span, therefore, general electronic equipment use metal chassis, in favor of distributing for heat, reduce the temperature of electronic equipment.
For the isometric larger electronic equipment of computer, can also promote to radiate by the way of cooling fan is installed, but
It is, for the electronic equipment of small volume, for example, the portable electric appts such as mobile phone, watch, tablet personal computer, in electronics
It is infeasible that cooling fan is set in equipment, and the efficiency only to be radiated by the heat transfer of casing is very low, particularly
For intelligent electronic device, the application program that it runs is more, and the heating of the part such as processor and battery is bigger, just with casing
Conduction of heat radiated it is clearly insufficient.
In order to improve radiating efficiency, in existing thermal component, some are dissipated using enclosing liquid elemental metal/metal alloy
Heat.But in the program, due to needing filling liquid elemental metals/metal alloy in thermal component, so electronics can be caused to set
There is the larger pipeline of bore in the inside of standby host shell so that the physical strength of electronic device shell is greatly lowered, it is difficult to meets
Performance requirement, the application prospects such as electronic equipment is dropproof, anticollision are very limited.
Utility model content
The utility model embodiment provides a kind of electronic equipment casing, to improve the radiating efficiency of electronic device shell.
Concrete technical scheme is as follows：
The utility model embodiment provides a kind of electronic equipment casing, and casing ontology encloses to form cavity, the cavity
For placing the prototype part of electronic equipment；There is one or more closed-loop capillary roads, the closed loop hair in the casing ontology
Low boiling working fluid is filled with thin pipe；The closed-loop capillary road and the low boiling working fluid are used for for the electronic equipment
Prototype part radiates；The bore in the closed-loop capillary road is 100-300 μm.
Optionally, when the quantity in the closed-loop capillary road is multiple, then the multiple closed-loop capillary road is mutually only
It is vertical.
Optionally, working medium pond is set in the casing ontology, the low boiling working fluid is filled with the working medium pond, it is described
Working medium pond is connected with the closed-loop capillary road, and two connectors are formed on each closed-loop capillary road.
Optionally, in addition to：One-way membrane is set at the connector；The one-way membrane and the connector half-connection.
Optionally, described two connectors in closed-loop capillary road connection working medium pond are the first connector and the respectively
Two connectors；Then also include：First connector and the second connector are arranged to different bores.
Optionally, in addition to：One-way membrane is set in the closed-loop capillary road.
Optionally, the working medium pond is arranged at position corresponding with electronic equipment pyrotoxin.
Optionally, the low boiling working fluid includes：One or more in freon, acetone and methanol.
Optionally, the low boiling working fluid is filled by vacuum, steam is expelled and heats the one or more side in expulsion
Formula is filled.
The a kind of electronic equipment casing that the utility model embodiment provides, casing ontology enclose to form cavity, and cavity is used for
The prototype part of electronic equipment is placed, there are one or more closed-loop capillary roads in casing ontology, filled in closed-loop capillary road
There is low boiling working fluid, closed-loop capillary road and low boiling working fluid are used to radiate for the prototype part of electronic equipment, closed-loop capillary road
Bore be 100-300 μm.When electronic equipment adstante febre, the heated vaporization of low boiling working fluid, quick diffusion, in electronic device shell
Be cooled liquefaction at low temperature, and reflux cycle is carried out in capillary channel, improves heat transfer efficiency by way of the cold heat exchange of liquid, electronics is set
The radiating effect of standby host shell greatly improves, simultaneously as the larger pipeline of bore is not present in electronic device shell, but uses
Capillary channel, so the physical strength of electronic device shell will not be affected, application prospect is very extensive.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
The first structural representation for the electronic device shell that Fig. 1 is provided by the utility model embodiment；
Second of structural representation of the electronic device shell that Fig. 2 is provided by the utility model embodiment.
Wherein, the corresponding relation in Fig. 1 and Fig. 2 between each component Name and respective drawings mark is：
01 casing ontology, 02 closed-loop capillary road, 03 working medium pond, 04 processing mouth；021 first connector, 022 second connection
Mouthful.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
The utility model embodiment provides a kind of electronic equipment casing, as shown in figure 1, casing ontology 01 encloses to form sky
Chamber, the cavity are used for the prototype part for placing electronic equipment；There are one or more closed-loop capillaries in the casing ontology 01
Road 02 (only shows 1) in Fig. 1, low boiling working fluid (not shown in figure 1) is filled with the closed-loop capillary road 02；It is described to close
Ring capillary channel 02 and the low boiling working fluid are used to radiate for the prototype part of the electronic equipment；The closed-loop capillary road 02
Bore be 100-300 μm.
It is understood that electronic device shell is shell used in various electronic equipments.For example, computer chassis,
Hand set machine shell, watch casing, instrument and meter casing, micromachine casing etc..The material of electronic device shell can be a variety of, example
Such as, cabinet, metal chassis, composite casing etc..
It should be noted that above-mentioned low boiling working fluid is is liquid at normal temperatures, the relatively low material of boiling point.That is,
The low boiling working fluid is liquid at normal temperatures, can be with vaporization after heat caused by absorption electronic device works.Implement in one kind
In mode, the low boiling working fluid can include the one or more in freon, acetone and methanol.It is of course also possible to use its
His low boiling working fluid, as long as it is being liquid at normal temperatures to ensure, the heat absorption of electronic equipment adstante febre low boiling working fluid can vaporize i.e.
Can, it is not specifically limited herein.
As a kind of embodiment of the utility model embodiment, the electronic equipment machine that the utility model embodiment is provided
Shell is preferred for miniaturized electronics, such as mobile phone, watch are smaller in equal volume, can not install the radiating such as radiator fan, radiating tube
The electronic equipment of part.Large scale electronic equipment, such as the isometric larger electronic equipment of computer, TV are may naturally be used for,
With the radiating of the thermal components such as auxiliary heat dissipation fan, radiating tube, radiating efficiency is further improved, strengthens radiating effect, this is all
Reasonably., can be by those skilled in the art according to species of electronic equipment and model etc. for the shape of electronic device shell
Factor determines, is not specifically limited herein.
In addition, the material for the electronic device shell that the utility model embodiment is provided is preferably metal group material, due to
Metal heat-conducting performance is good, can further improve the radiating efficiency of electronic device shell.
As a kind of embodiment of the utility model embodiment, the quantity in closed-loop capillary road 02 can be it is multiple, that
The plurality of closed-loop capillary road 02 can be separate.That is, each closed-loop capillary road 02 is not connected, low boiling
Working medium will not be flowed in another closed-loop capillary road 02 from a closed-loop capillary road 02, to ensure that low boiling working fluid is present
In each closed-loop capillary road 02, make electronic device shell radiating more uniform, improve radiating effect.It is also possible to
Ensure that low boiling working fluid, only in the interior diffusion in a closed-loop capillary road 02, liquefaction, ensures each closed-loop capillary road after vaporizing
The amount of low boiling working fluid in 02 is stablized constant, and radiation stability is good.Certainly, above-mentioned multiple closed-loop capillary roads 02 can also phase
It is intercommunicated, capillary channel net is formed, this is also rational.
It should be noted that the quantity in closed-loop capillary road can be by those skilled in the art according to electronic device shell
The factor such as the heat condition setting of volume, electronic equipment, is not specifically limited herein.
As a kind of embodiment of the utility model embodiment, as shown in Fig. 2 can also be set in electronic device shell
One working medium pond 03, the interior filling low boiling working fluid in working medium pond 03, working medium pond 03 connects with multiple closed-loop capillary roads 02, closed each
Two connectors, i.e. the first connector 021 and the second connector 022 are formed on ring capillary channel 02 to connect the working medium pond
03。
, can be from entirety by the closed-loop capillary road 02 and working medium pond 03, and the low boiling working fluid of internal filling
The upper thermal conductivity factor for improving electronic device shell.With reference to the thermal conductivity factor of common metal：Silver about 429, fine copper is about 401, pure
Aluminium is about 237 (W/ (mK)).And according to laboratory data, the casing thermal conductivity factor with closed-loop capillary road can reach about
20000(W/(m·K)).It should be noted that flowing of the low boiling working fluid in closed-loop capillary road 02 and working medium pond 03 may
It is unordered.The overall thermal conductivity factor of electronic device shell can be still greatly improved in the unordered flowing of low boiling working fluid.
Circulated it is preferable that can realize that guiding low boiling working fluid is orderly by the improvement of structure, further improve electronics
The radiating effect of equipment shell, it is specific as follows：
, can be with the connector in closed-loop capillary 02 Yu working medium pond 03 as a kind of embodiment of the embodiment of the present invention
One-way membrane (not shown in Fig. 2) is set.That is, the resistance that fluid passes through from one-way membrane side is much smaller than from opposite side and passed through
Resistance.The one-way membrane can be with the connector half-connection.In the present embodiment, to the specific material and knot of the one-way membrane
Structure does not do specific restriction.The one-way membrane can be with this on the first connector 021 or the second connector 022, also can be simultaneously
It is arranged on the first connector 021 and the second connector 022.In further embodiments, no matter in the electronic device shell
Whether working medium pond 03 is set, the one-way membrane can be arranged within the closed-loop capillary 02.Working medium can so be ensured
The gas after low boiling working fluid vaporization in pond 03 may only enter in closed-loop capillary road 02 from a connector, low after liquefaction
Boiling point working medium enters in working medium pond 03 from another connector, forms the one-way flow circulation of low boiling working fluid, further lifting
Radiating effect.
Or first connector 021 in closed-loop capillary road connection working medium pond and the second connector 022 can be set
Different bores is set to, for example, the bore of the first connector 021 is arranged into 100 μm, the bore of the second connector 022 is set
It is set to 300 μm.Because the bore of fluid flow path will influence fluid flowing velocity, in working medium pond specific temperature and
Under pressure, Working fluid flow speed is different under the first connector 021 and the different bore of the second connector 022, thus also can be real
Now working medium is guided to carry out individual event flowing.
In ideal conditions, the low boiling working fluid in working medium pond 03 or the gas after low boiling working fluid vaporization can be from even
Interface enters in multiple closed-loop capillary roads 02, and the low boiling working fluid of the gaseous state in multiple closed-loop capillary roads 02 is remote
It after being liquefied at pyrotoxin, can be flowed back to from connector in working medium pond 03, form stable gas-liquid cycle.
Due to the limited volume in closed-loop capillary road 02, the low boiling working fluid of more amount can not be filled, and working medium pond 03 holds
Product is larger, can fill the low boiling working fluid of more amount, radiating of such low boiling working fluid in evaporation-boiling-condensation process
More efficient, heat dissipation capacity is bigger.The specific loading of low boiling working fluid can be by those skilled in the art according to electronic equipment machine
The heat condition of electronic equipment used in shell determines, is not specifically limited herein.
As a kind of embodiment of the utility model embodiment, working medium pond 03 can be arranged at and electronic equipment pyrotoxin
Corresponding position.That is, working medium pond 03 can be arranged on the position closer to the distance with electronic equipment pyrotoxin.For example, such as
Fruit electronic equipment is mobile phone, watch, and pyrotoxin is generally battery location, then can be so that working medium pond 03 is arranged on into electronic equipment
The part contacted in casing with battery, low boiling working fluid farthest can absorb heat and vaporize in such working medium pond 03,
The radiating efficiency of electronic device shell is improved, radiating effect is more preferable.
It should be noted that the structure for the electronic device shell that Fig. 1 and Fig. 2, which are the utility model embodiment, to be provided is shown
It is intended to, although occurring the shape of electronic device shell in Fig. 1 and Fig. 2, shape, quantity and the position in closed-loop capillary road, with
And shape and the position in working medium pond, it is not intended that the electronic equipment machine in the technical scheme that the utility model embodiment is provided
Shell is exactly the shape shown in Fig. 1 or Fig. 2, does not also indicate that in the technical scheme that the utility model embodiment is provided and there is phase
The closed-loop capillary road and working medium pond of quantity and position are answered, Fig. 1 and Fig. 2 can only represent the skill that the utility model embodiment is provided
There may be closed-loop capillary road and working medium pond in art scheme, the shape of the casing shown in Fig. 1 and Fig. 2, closed-loop capillary road
Shape, quantity and position, and the shape in working medium pond and position can not turn into the utility model embodiment is provided
The restriction of technical scheme.As a kind of embodiment of the utility model embodiment, above-mentioned closed-loop capillary road 02 can pass through
Fluted tube manufacture craft and wire netting manufacture craft are sintered to make, that is to say, that generally require in electronic device shell table
Face opens up processing mouth, and then washes by burning, the mode such as corrode and form capillary channel, as shown in Fig. 2 processing closed-loop capillary road 02
Shi Shouxian can open up processing mouth 04, then wash by burning, the mode such as corrode and form capillary channel, can after capillary channel is formed
To be welded by electron ion, the sealing mode such as argon welding blocked mouth 04 is processed, ultimately form closed-loop capillary road 02.
For in the case of working medium pond is not provided with casing ontology, because low boiling working fluid needs to fill to closed loop capillary
, can be first by low boiling working fluid Filling power capillary channel so after capillary channel machines in pipeline, then pass through electron ion
The sealing modes such as weldering, argon welding will process mouth closure, form the closed-loop capillary road filled with low boiling working fluid.
It should be noted that the position that opens up of processing mouth is determined according to the position in closed-loop capillary road, shown in Fig. 2
Processing mouth shape and position, it is impossible to as the restriction of the technical scheme provided the utility model embodiment.
As a kind of embodiment of the utility model embodiment, the filling mode of low boiling working fluid can be filled out for vacuum
Fill, one or more of modes in steam expulsion and heating expulsion, as long as low boiling working fluid can be filled to closed-loop capillary
In road, it is not specifically limited herein.
It can be seen that a kind of electronic equipment casing that the utility model embodiment provides, casing ontology enclose to form cavity, cavity
For placing the prototype part of electronic equipment, there are one or more closed-loop capillary roads in casing ontology, in closed-loop capillary road
Filled with low boiling working fluid, closed-loop capillary road and low boiling working fluid are used to radiate for the prototype part of electronic equipment, closed loop capillary
The bore of pipeline is 100-300 μm.When electronic equipment adstante febre, the heated vaporization of low boiling working fluid, quick diffusion, in electronic equipment
Be cooled liquefaction at casing low temperature, and reflux cycle is carried out in capillary channel, and heat transfer efficiency is improved by way of the cold heat exchange of liquid, electricity
The radiating effect of sub- equipment shell greatly improves, simultaneously as the larger pipeline of bore is not present in electronic device shell, but
Capillary channel is used, so the physical strength of electronic device shell will not be affected, application prospect is very extensive.
It should be further stated that herein, such as first and second or the like relational terms be used merely to by
One entity or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or operation
Between any this actual relation or order be present.Moreover, term " comprising ", "comprising" or its any other variant meaning
Covering including for nonexcludability, so that process, method, article or equipment including a series of elements not only include that
A little key elements, but also the other element including being not expressly set out, or also include for this process, method, article or
The intrinsic key element of equipment.In the absence of more restrictions, the key element limited by sentence "including a ...", is not arranged
Except other identical element in the process including the key element, method, article or equipment being also present.
Each embodiment in this specification is described by the way of related, identical similar portion between each embodiment
Divide mutually referring to what each embodiment stressed is the difference with other embodiment.It is real especially for system
For applying example, because it is substantially similar to embodiment of the method, so description is fairly simple, related part is referring to embodiment of the method
Part explanation.
Preferred embodiment of the present utility model is the foregoing is only, is not intended to limit protection model of the present utility model
Enclose.All made within spirit of the present utility model and principle any modification, equivalent substitution and improvements etc., are all contained in this reality
With in new protection domain.
Claims (9)
1. a kind of electronic equipment casing, it is characterised in that casing ontology (01) encloses to form cavity, and the cavity is used to place electricity
The prototype part of sub- equipment；There is one or more closed-loop capillary roads (02), the closed loop capillary in the casing ontology (01)
Low boiling working fluid is filled with pipeline (02)；The closed-loop capillary road (02) and the low boiling working fluid are used to be the electronics
The prototype part radiating of equipment；The bore of the closed-loop capillary road (02) is 100-300 μm.
2. casing as claimed in claim 1, it is characterised in that when the quantity of the closed-loop capillary road (02) is multiple,
Then the closed-loop capillary road (02) is separate.
3. casing as claimed in claim 1, it is characterised in that working medium pond (03) is set in the casing ontology (01), it is described
The low boiling working fluid is filled with working medium pond (03), the working medium pond (03) connects with the closed-loop capillary road (02),
Two connectors are formed on each closed-loop capillary road (02).
4. casing according to claim 3, it is characterised in that also include：One-way membrane is set at the connector；It is described
One-way ventilating film and the connector half-connection.
5. casing according to claim 3, it is characterised in that a closed-loop capillary road (02) connects working medium pond (03)
Described two connectors are the first connector (021) and the second connector (022) respectively；Then also include：Described first is connected
The connector 022 of mouth 021 and second is arranged to different bores.
6. the casing according to Claims 2 or 3, it is characterised in that also include：Set in the closed-loop capillary road (02)
Put one-way membrane.
7. casing as claimed in claim 3, it is characterised in that the working medium pond (03) is arranged at and electronic equipment pyrotoxin pair
The position answered.
8. the casing as described in claim any one of 1-5, it is characterised in that the low boiling working fluid includes：Freon, acetone
And the one or more in methanol.
9. casing as claimed in claim 8, it is characterised in that the low boiling working fluid is filled by vacuum, steam expulsion and
One or more of modes in heating expulsion are filled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720410621.6U CN206650981U (en) | 2017-04-18 | 2017-04-18 | A kind of electronic equipment casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720410621.6U CN206650981U (en) | 2017-04-18 | 2017-04-18 | A kind of electronic equipment casing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206650981U true CN206650981U (en) | 2017-11-17 |
Family
ID=60276324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720410621.6U Active CN206650981U (en) | 2017-04-18 | 2017-04-18 | A kind of electronic equipment casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206650981U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107072117A (en) * | 2017-04-18 | 2017-08-18 | 北京数科技有限公司 | A kind of electronic equipment casing |
-
2017
- 2017-04-18 CN CN201720410621.6U patent/CN206650981U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107072117A (en) * | 2017-04-18 | 2017-08-18 | 北京数科技有限公司 | A kind of electronic equipment casing |
| WO2018192463A1 (en) * | 2017-04-18 | 2018-10-25 | 青岛海尔股份有限公司 | Electronic device housing |
| CN107072117B (en) * | 2017-04-18 | 2020-06-12 | 北京一数科技有限公司 | Electronic equipment casing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104902727B (en) | The center and mobile terminal of a kind of mobile terminal | |
| Deng et al. | Design of practical liquid metal cooling device for heat dissipation of high performance CPUs | |
| CN107454797B (en) | A kind of pump drive quarter-phase circuit device for high fever stream dissipation from electronic devices | |
| CN205726840U (en) | Heat radiation module | |
| CN100395684C (en) | Loop radiating module | |
| CN106197109A (en) | A kind of liquid cold temperature-uniforming plate composite heating radiator | |
| CN102723316A (en) | Loop heat pipe structure | |
| CN107072117A (en) | A kind of electronic equipment casing | |
| CN108448202A (en) | A kind of battery detecting radiator based on phase-change material and foam copper | |
| CN109343596A (en) | A kind of mobile phone temperature regulating device based on phase transformation capsule and bionical fluid channel | |
| CN206650981U (en) | A kind of electronic equipment casing | |
| CN110342454B (en) | Heat dissipation device of inertial navigation module | |
| CN205738119U (en) | A kind of cooling system for unmanned plane and unmanned plane | |
| CN202008994U (en) | Loop heat pipe structure | |
| CN105764305A (en) | Heat-dissipating device, mobile terminal and heat-dissipating system | |
| CN207133751U (en) | A kind of radiator structure of tablet personal computer | |
| CN202329315U (en) | Low pressure loop type thermosyphon radiating device | |
| CN104949557B (en) | Antigravity hair cell regeneration | |
| CN110191621A (en) | A kind of printed circuit board with radiator structure is stacked component and electronic equipment | |
| CN205912405U (en) | Heat radiation structure and hand -held device | |
| CN206022349U (en) | A kind of heat pipe type phase-change heat radiating device | |
| CN206339926U (en) | The built-in radiator of notebook | |
| CN206310966U (en) | A kind of structure thermal control integral heat dissipation device | |
| CN206909030U (en) | The housing and electronic equipment of electronic equipment | |
| CN105378916B (en) | Radiator structure and electronic device with the radiator structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Method for preparing electronic equipment enclosure material Effective date of registration: 20190723 Granted publication date: 20171117 Pledgee: HAIER INFORMATION TECHNOLOGY (SHENZHEN) Co.,Ltd. Pledgor: BEIJING ASU TECH Co.,Ltd. Registration number: 2019990000753 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20220624 Granted publication date: 20171117 Pledgee: HAIER INFORMATION TECHNOLOGY (SHENZHEN) Co.,Ltd. Pledgor: BEIJING ASU TECH Co.,Ltd. Registration number: 2019990000753 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |