CN104422220A - Ice maker - Google Patents
Ice maker Download PDFInfo
- Publication number
- CN104422220A CN104422220A CN201410310809.4A CN201410310809A CN104422220A CN 104422220 A CN104422220 A CN 104422220A CN 201410310809 A CN201410310809 A CN 201410310809A CN 104422220 A CN104422220 A CN 104422220A
- Authority
- CN
- China
- Prior art keywords
- ice
- ice making
- making sheets
- forming portion
- machine
- 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.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 230000004888 barrier function Effects 0.000 claims description 11
- 238000005452 bending Methods 0.000 claims description 3
- 238000000926 separation method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25C—PRODUCING, WORKING OR HANDLING ICE
- F25C1/00—Producing ice
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25C—PRODUCING, WORKING OR HANDLING ICE
- F25C5/00—Working or handling ice
- F25C5/02—Apparatus for disintegrating, removing or harvesting ice
- F25C5/04—Apparatus for disintegrating, removing or harvesting ice without the use of saws
- F25C5/08—Apparatus for disintegrating, removing or harvesting ice without the use of saws by heating bodies in contact with the ice
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25C—PRODUCING, WORKING OR HANDLING ICE
- F25C1/00—Producing ice
- F25C1/12—Producing ice by freezing water on cooled surfaces, e.g. to form slabs
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Production, Working, Storing, Or Distribution Of Ice (AREA)
Abstract
The invention provides an ice maker reliably performing a reliable ice separating operation. The ice maker includes: an evaporator; an ice making plate disposed vertically and making contact with the evaporator at a rear side thereof, the ice maker including a plurality of ice forming parts formed by dividing a front side thereof, surfaces of the ice forming parts being sloped to face downwards; a water tub disposed below the ice making plate to collect water falling from the ice making plate; and an ice bin forming an ice storage space around the water tub to collect ice falling from the ice making plate. Since the ice making plate has a sloped structure, ice may be reliably separated from the ice making plate, and the quality of ice may be improved.
Description
The cross reference of related application
This application claims the Korean Patent Application No. submitted on September 4th, 2013 to Korean Intellectual Property Office is the priority of 10-2013-0106019, and its full content is incorporated to herein by reference.
Technical field
The present invention relates to a kind of ice machine, relating more specifically to a kind of ice machine for reliably performing ice lock out operation.
Background technology
In a kind of down flow type ice machine, when water is from when being flowed downward by the ice making sheets of evaporator cools, water freezes for ice, and ice and ice making sheets are stored in refrigerator-freezer after separating.
Fig. 1 be a diagram that the perspective view of the assembly that a kind of ice machine of prior art comprises, and this assembly comprises ice making sheets 20 and evaporimeter 10; Fig. 2 be a diagram that the sectional view how forming ice in the ice making sheets 20 of the ice machine of prior art.
See figures.1.and.2, the ice machine of prior art comprises: vertically disposed ice making sheets 20; And evaporimeter 10, it contacts with the rear surface of ice making sheets 20.
Ice making sheets 20 comprises: multiple dividing plate 22, and its width along ice making sheets 20 divides ice making sheets 20 to form multiple ice cube on the width of ice making sheets 20; Ice separation protrusions 24, it for being separated ice cube from ice making sheets 20 in ice lock out operation.
But in the prior art, the surface that ice making sheets 20 forms ice cube is vertical.Therefore, in ice lock out operation, ice cube may be not easy to be separated from ice making sheets 20 but can be stuck in ice making sheets 20.
Therefore, in the prior art, a large amount of hot gas can be used make the ice cube be stuck in ice making sheets 20 to be separated, cause ice cube to melt, thus reduce the quality and quantity of ice.
Summary of the invention
One aspect of the present invention can provide a kind of ice machine, in described ice machine, can be separated from ice making sheets by ice completely in ice separation operation process.
According to an aspect of the present invention, a kind of ice machine can comprise: evaporimeter; Vertically disposed ice making sheets, the rear side of described ice making sheets contacts with described evaporimeter, and described ice machine comprises the multiple one-tenth ice portions by being formed dividing on front side of it, and the surface of described ice forming portion is towards having a down dip; Bucket, it is arranged under described ice making sheets to collect the water flowed down from described ice making sheets; And refrigerator-freezer, it forms ice storage area to collect the ice fallen from described ice making sheets around described bucket.
Described in each, ice forming portion can comprise: the upper end of giving prominence to forward from described ice making sheets; And towards the downward-sloping inclined-plane of the rear side of described ice making sheets.
The lower end of described ice forming portion can form the jaw given prominence to forward from described ice making sheets.
Jaw described in each can extend from the lower end of upper ice making unit to the upper end of the lower ice making unit be just positioned under described upper ice making unit.
By making described ice making sheets bending, described ice forming portion and described jaw are formed as one.
Described jaw can be downward-sloping.
Described ice making sheets comprises multiple barrier further, and described multiple barrier is for dividing being arranged on the width of described ice making sheets described in each ice forming portion.
Described barrier is by being formed multiple bend portions of described ice making sheets to give prominence to forward.
Described evaporimeter comprises pipeline, and cold-producing medium flows in described pipeline, the rear contact of described pipeline and described ice forming portion, and the both sides of described pipeline tilt according to the tilted shape of described ice forming portion.
Accompanying drawing explanation
The above-mentioned understanding will be able to from the detailed description done below in conjunction with accompanying drawing clearly with other aspect, feature and advantage of the present invention, wherein:
Fig. 1 is the perspective view representing the assembly that the ice machine of prior art comprises, and this assembly comprises ice making sheets and evaporimeter;
Fig. 2 represents the sectional view how forming ice in the ice making sheets of ice machine shown in Fig. 1;
Fig. 3 is the sectional view representing the assembly that ice machine according to an embodiment of the invention comprises, and this assembly comprises evaporimeter, ice making sheets, bucket, refrigerator-freezer and guide;
Fig. 4 is the perspective view of the ice making sheets representing ice machine shown in Fig. 3;
Fig. 5 represents the sectional view how to be separated from the ice making sheets of ice machine shown in Fig. 3 by ice; And
Fig. 6 is the perspective view representing the ice formed in the ice making sheets of ice machine shown in Fig. 3.
Detailed description of the invention
Below with reference to accompanying drawings exemplary embodiment of the present invention is described in detail.
But the present invention also multiple different form can carry out example, and the present invention should not be construed as the specific embodiment being limited to and listing herein.On the contrary, these embodiments are provided to be to make the present invention more in detail with complete, and in order to fully pass on scope of the present invention to those skilled in the art.
In the drawings, for clarity sake, the shape of element and size may be exaggerated to some extent, and drawing reference numeral identical in all of the figs represents same or analogous element.
In the following description, technical term only for explaining specific exemplary embodiment, is not construed as limiting scope and spirit of the present invention.Unless indication is contrary, otherwise the term of singulative also can comprise plural form.
Hereinafter, with reference to the accompanying drawings exemplary embodiment of the present invention is described.
With reference to Fig. 3 to Fig. 6, will be described ice machine 100 according to embodiments of the invention hereinafter.
Fig. 3 is the sectional view representing the assembly that ice machine 100 according to an embodiment of the invention comprises, and this assembly comprises evaporimeter 110, ice making sheets 200, bucket 120, refrigerator-freezer 130 and guide 140.Fig. 4 is the perspective view representing ice making sheets 200.Fig. 5 represents the sectional view how to be separated from ice making sheets 200 by ice.Fig. 6 is the side view representing the ice formed in ice making sheets 200.
With reference to Fig. 3 to Fig. 6, according to embodiments of the invention, ice machine 100 can comprise evaporimeter 110, bucket 120, refrigerator-freezer 130, guide 140 and ice making sheets 200.
Evaporimeter 110 can comprise pipeline, and cold-producing medium flows in this pipeline.This pipeline can be the zigzag with multiple sweep.
As shown in Figures 3 to 5, evaporimeter 110 can with the rear contact of ice making sheets 200 (will be described in detail below), take away the heat of surrounding during cold-producing medium evaporation along with flowing in evaporimeter 110, ice making sheets 200 can be cooled.
Bucket 120 can be arranged under ice making sheets 200, to collect the water (ice making water and the water be separated with ice) flowed down from ice making sheets 200.
Refrigerator-freezer 130 can form ice storage area around bucket 120, to collect the ice (I) fallen from ice making sheets 200.
The ice fallen from ice making sheets 200 (I) and moisture can leave by guide 140, the bucket 120 and water leads by led by ice (I) refrigerator-freezer 130 passing hole.
Ice making sheets 200 is vertically disposed plate-like piece, and its rear surface contacts with evaporimeter 110.Ice making sheets 200 is cooled by evaporimeter 110 to form ice (I) in ice making sheets 200.
Ice making sheets 200 comprises by dividing its front surface and forms multiple ice forming portion 210.That is, the front surface of ice making sheets 200 can be divided into the ice forming portion 210 arranged with grid pattern.
Each ice forming portion 210 is the region forming monolithic ice (I).
The surperficial tiltable of ice forming portion 210 is to make this surface down.
In an embodiment, as shown in Fig. 4 to Fig. 5, the upper end of ice forming portion 210 can be given prominence to forward, and the table along ice forming portion 210 is prone to tilt backwards simultaneously.
That is, the surface of ice forming portion 210 is not vertical.On the contrary, the surface of ice forming portion 210 can tilt backwards in a downward direction.
As shown in Figure 5, the both sides of evaporimeter 110 can be shaped according to the inclined surface of ice forming portion 210.
In this case, the contact surface of evaporimeter 110 and ice forming portion 210 can be increased.
That is, the heat exchanger effectiveness between evaporimeter 110 and ice forming portion 210 can be increased.
Further, in an embodiment, the jaw 220 given prominence to forward from ice making sheets 200 can be formed at the lower end of ice forming portion 210.
In an embodiment, each jaw 220 can be formed on the lower end of ice forming portion 210, and each jaw 220 may extend to the upper end of the lower ice forming portion 210 adjacent with ice forming portion 210.
In other words, ice forming portion 210 and jaw 220 are alternately formed in the vertical direction of ice making sheets 200.
Therefore, due to ice forming portion 210 and jaw 220, so the front surface of ice making sheets 200 can be configured as stepped.
If jaw 220 is not inclination but level is given prominence to, the water so dropped on the front surface of ice making sheets 200 can separate with the front surface of ice making sheets 200 at jaw 220 place.
In this case, water may can not flow to the ice forming portion 210 be positioned under jaw 220, and the efficiency of therefore ice making may reduce.Further, the water separated with ice making sheets 200 can infiltrate in refrigerator-freezer 130, thus makes to be stored in the ice-out in refrigerator-freezer 130.
In order to prevent the generation of this thing, jaw 220 can be downward-sloping.That is, jaw 220 is not that level is outstanding but downward-sloping.
In an embodiment, by making the front surface of ice making sheets 200 bend, ice forming portion 210 and jaw 220 can form as one with ice making sheets 200.
Such as, when manufacturing ice making sheets 200, part repeatedly bending in a zigzag manner in ice making sheets 200 can be formed as ice forming portion 210 and jaw 220.
Barrier 230 can divide the ice forming portion 210 be arranged on the width of ice making sheets 200.
Barrier 230 can be the plate that the short transverse along ice making sheets 200 extends, and barrier 230 can regular intervals be arranged on the width of ice making sheets 200.
In an embodiment of the present invention, by making the bend portions of ice making sheets 200 form barrier 230 to give prominence to forward.But embodiments of the invention are not limited thereto.Such as, separating plate can be connected to ice making sheets 200 to form barrier 230.
Hereinafter, be described according to the ice lock out operation of embodiments of the invention to ice machine 100.
As shown in Figure 5, in ice lock out operation, the ice cube (I) that the ice forming portion 210 of ice making sheets 200 is formed can melt on the surface contacted with ice forming portion 210, thus separates with ice making sheets 200.
In ice lock out operation, ice cube (I) can move downward under the dragging of gravity.Particularly, because ice forming portion 210 is downward-sloping, so ice cube (I) can be stressed on the direction away from ice forming portion 210.
Meanwhile, owing to being positioned at the jaw 220 on the lower end of ice cube (I), so the upper end of ice cube (I) can be tended to be rotated down.
Therefore, during ice lock out operation, ice cube (I) can be subject to gravity and revolving force, and therefore the upper end of ice cube (I) can easily from ice forming portion 210 separately.Then, air can infiltrate the gap between ice cube (I) and ice forming portion 210, to contribute to ice cube (I) from ice forming portion 210 separately.
In the embodiment shown in fig. 6, can align with the upper end of the ice cube be shaped completely (I) in the upper end of ice forming portion 210.
In this case, during ice lock out operation, air can infiltrate the gap between the upper end of ice cube (I) and the upper end of ice forming portion 210 easily, thus contributes to the separation of ice cube (I).
Such as, if employ hot gas in ice lock out operation, so promptly can form gap between the upper end and the upper end of ice forming portion 210 of ice cube (I), air can infiltrate this gap.Therefore, the upper end of ice cube (I) and the remainder of ice cube (I) all can easily from ice forming portion 210 separately.
In an embodiment of the present invention, the ice making sheets 200 of ice machine 100 has downward-sloping structure, and thus ice can be stressed on the direction away from ice making sheets 200.Therefore, ice can reliably be separated.
As listed, according to exemplary embodiment of the present invention, because ice making sheets has incline structure, so ice can reliably be separated from ice making sheets, thus the quality of ice can be improved above.
Although illustrated exemplary embodiment above and described, one skilled in the art will understand that under the condition not deviating from the spirit and scope of the present invention limited in appended claims, various modifications and variations can have been made.
Claims (9)
1. an ice machine, comprising:
Evaporimeter;
Ice making sheets, described ice making sheets is vertically arranged and contacts with described evaporimeter on rear side of it, and described ice machine comprises multiple ice forming portion, and described multiple ice forming portion is by being formed dividing on front side of ice making sheets, and the surface of described ice forming portion is towards having a down dip;
Bucket, is arranged under described ice making sheets to collect the water flowed down from described ice making sheets; And
Refrigerator-freezer, forms ice storage area to collect the ice fallen from described ice making sheets around described bucket.
2. ice machine as claimed in claim 1, wherein, each in described ice forming portion comprises:
From the upper end that described ice making sheets is given prominence to forward; And
Towards the inclined-plane that the rear side of described ice making sheets is downward-sloping.
3. ice machine as claimed in claim 2, wherein, the lower end of described ice forming portion defines the jaw given prominence to forward from described ice making sheets.
4. ice machine as claimed in claim 3, wherein, each in described jaw upper end from the lower end of upper ice making unit to the lower ice making unit be just positioned at below described upper ice making unit extends.
5. ice machine as claimed in claim 4, wherein, forms as one described ice forming portion and described jaw by making described ice making sheets bending.
6. ice machine as claimed in claim 3, wherein, described jaw is downward-sloping.
7. ice machine as claimed in claim 1, wherein, described ice making sheets comprises multiple barrier further, described multiple barrier the width along described ice making sheets is arranged each described in ice forming portion divide.
8. ice machine as claimed in claim 7, wherein, by forming described barrier by the bend portions of described ice making sheets to give prominence to forward.
9. ice machine as claimed in claim 1, wherein, described evaporimeter comprises pipeline, and cold-producing medium flows in described pipeline, the rear contact of described pipeline and described ice forming portion, and the both sides of described pipeline tilt according to the tilted shape of described ice forming portion.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020130106019A KR101335953B1 (en) | 2013-09-04 | 2013-09-04 | Ice maker |
| KR10-2013-0106019 | 2013-09-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104422220A true CN104422220A (en) | 2015-03-18 |
| CN104422220B CN104422220B (en) | 2017-04-26 |
Family
ID=49987038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410310809.4A Expired - Fee Related CN104422220B (en) | 2013-09-04 | 2014-07-01 | ice maker |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20150059396A1 (en) |
| KR (1) | KR101335953B1 (en) |
| CN (1) | CN104422220B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108072206A (en) * | 2012-09-10 | 2018-05-25 | 星崎美国公司 | Ice machine and ice cube evaporator |
| CN110398102A (en) * | 2018-04-25 | 2019-11-01 | 上海浪拓制冷设备有限公司 | A kind of equal water circlip of ice making evaporator |
| CN111226083A (en) * | 2017-11-28 | 2020-06-02 | 拉姆·普拉卡施·夏尔马 | Evaporator assembly for a vertical flow ice maker |
| CN115388589A (en) * | 2022-08-23 | 2022-11-25 | 广东美的白色家电技术创新中心有限公司 | Ice making module and ice making equipment |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6860388B2 (en) * | 2017-03-15 | 2021-04-14 | ホシザキ株式会社 | Flow-down ice machine |
| KR101970275B1 (en) | 2017-09-18 | 2019-04-18 | 대영이앤비(주) | Splash screen apparatus for ice maker |
| KR101943597B1 (en) | 2018-02-02 | 2019-04-17 | 대영이앤비(주) | Evaporator for ice maker |
| KR20220040943A (en) | 2020-09-24 | 2022-03-31 | 코웨이 주식회사 | Continuous flow through type evaporator, ice making apparatus and water purifying apparatus including the same |
| KR20220086988A (en) | 2020-12-17 | 2022-06-24 | 코웨이 주식회사 | Continuous flow through type evaporator, ice making apparatus and water purifying apparatus including the same |
| KR20220086989A (en) | 2020-12-17 | 2022-06-24 | 코웨이 주식회사 | Continuous flow through type evaporator, ice making apparatus and water purifying apparatus including the same |
| KR20220090194A (en) | 2020-12-22 | 2022-06-29 | 코웨이 주식회사 | Continuous flow through type evaporator, ice making apparatus and water purifying apparatus including the same |
| KR20220091074A (en) | 2020-12-23 | 2022-06-30 | 코웨이 주식회사 | Continuous flow through type evaporator, ice making apparatus and water purifying apparatus including the same |
| KR20220091013A (en) | 2020-12-23 | 2022-06-30 | 코웨이 주식회사 | Continuous flow through type evaporator, ice making apparatus and water purifying apparatus including the same |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2100288A (en) * | 1936-06-27 | 1937-11-23 | Gen Motors Corp | Refrigerating apparatus |
| US3913349A (en) * | 1974-03-11 | 1975-10-21 | Ivan L Johnson | Ice maker with swing-out ice cube system |
| JPS6082765A (en) * | 1983-10-12 | 1985-05-10 | 星崎電機株式会社 | Ice machine |
| US6209849B1 (en) * | 1998-12-23 | 2001-04-03 | H & D Product Development, Llc | Ice cube tray |
| US6247318B1 (en) * | 1999-11-02 | 2001-06-19 | Mile High Equipment Co. | Evaporator device for an ice maker and method of manufacture |
| JP2006090691A (en) | 2004-08-26 | 2006-04-06 | Hoshizaki Electric Co Ltd | Operating method for flow down type ice maker |
| JP4994198B2 (en) * | 2007-11-21 | 2012-08-08 | ホシザキ電機株式会社 | Flowing ice machine |
| JP5405168B2 (en) * | 2008-04-01 | 2014-02-05 | ホシザキ電機株式会社 | Ice making unit of a flow-down type ice machine |
| JP2011038706A (en) * | 2009-08-11 | 2011-02-24 | Hoshizaki Electric Co Ltd | Ice-making unit for flow-down type ice making machine |
| JP2011075232A (en) * | 2009-09-30 | 2011-04-14 | Hoshizaki Electric Co Ltd | Sprinkler device for falling type ice-making machine |
-
2013
- 2013-09-04 KR KR1020130106019A patent/KR101335953B1/en active IP Right Grant
-
2014
- 2014-04-30 US US14/266,072 patent/US20150059396A1/en not_active Abandoned
- 2014-07-01 CN CN201410310809.4A patent/CN104422220B/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108072206A (en) * | 2012-09-10 | 2018-05-25 | 星崎美国公司 | Ice machine and ice cube evaporator |
| CN108072206B (en) * | 2012-09-10 | 2021-06-18 | 星崎美国公司 | Ice maker and ice cube evaporator |
| CN111226083A (en) * | 2017-11-28 | 2020-06-02 | 拉姆·普拉卡施·夏尔马 | Evaporator assembly for a vertical flow ice maker |
| CN111226083B (en) * | 2017-11-28 | 2021-12-07 | 拉姆·普拉卡施·夏尔马 | Evaporator assembly for a vertical flow ice maker |
| US11333417B2 (en) | 2017-11-28 | 2022-05-17 | Ram Prakash Sharma | Evaporator assembly for a vertical flow type ice making machine |
| CN110398102A (en) * | 2018-04-25 | 2019-11-01 | 上海浪拓制冷设备有限公司 | A kind of equal water circlip of ice making evaporator |
| CN115388589A (en) * | 2022-08-23 | 2022-11-25 | 广东美的白色家电技术创新中心有限公司 | Ice making module and ice making equipment |
| CN115388589B (en) * | 2022-08-23 | 2024-03-22 | 广东美的白色家电技术创新中心有限公司 | Ice making module and ice making equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104422220B (en) | 2017-04-26 |
| US20150059396A1 (en) | 2015-03-05 |
| KR101335953B1 (en) | 2013-12-04 |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: South Korea Gyeonggi Do Anshan City Patentee after: Brunix Co.,Ltd. Address before: South Korea Gyeonggi Do Anshan City Patentee before: DAEYEONG E&B Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170426 |