SG11201608004XA - Polishing pad and process for producing same - Google Patents

Polishing pad and process for producing same

Info

Publication number
SG11201608004XA
SG11201608004XA SG11201608004XA SG11201608004XA SG11201608004XA SG 11201608004X A SG11201608004X A SG 11201608004XA SG 11201608004X A SG11201608004X A SG 11201608004XA SG 11201608004X A SG11201608004X A SG 11201608004XA SG 11201608004X A SG11201608004X A SG 11201608004XA
Authority
SG
Singapore
Prior art keywords
polishing pad
producing same
producing
same
polishing
Prior art date
Application number
SG11201608004XA
Inventor
Kouki ITOYAMA
Daisuke Takahashi
Original Assignee
Fujibo Holdings Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fujibo Holdings Inc filed Critical Fujibo Holdings Inc
Publication of SG11201608004XA publication Critical patent/SG11201608004XA/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B37/00—Lapping machines or devices; Accessories
    • B24B37/11—Lapping tools
    • B24B37/20—Lapping pads for working plane surfaces
    • B24B37/24—Lapping pads for working plane surfaces characterised by the composition or properties of the pad materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B37/00—Lapping machines or devices; Accessories
    • B24B37/11—Lapping tools
    • B24B37/20—Lapping pads for working plane surfaces
    • B24B37/26—Lapping pads for working plane surfaces characterised by the shape of the lapping pad surface, e.g. grooved
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D11/00—Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
    • B24D11/001—Manufacture of flexible abrasive materials
    • B24D11/003—Manufacture of flexible abrasive materials without embedded abrasive particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
    • B24D18/0009—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for using moulds or presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
    • B24D3/20—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially organic
    • B24D3/28—Resins or natural or synthetic macromolecular compounds
    • B24D3/32—Resins or natural or synthetic macromolecular compounds for porous or cellular structure
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/08—Processes
    • C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/08—Processes
    • C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
    • C08G18/12—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step using two or more compounds having active hydrogen in the first polymerisation step
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/08—Processes
    • C08G18/14—Manufacture of cellular products
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/08—Processes
    • C08G18/16—Catalysts
    • C08G18/18—Catalysts containing secondary or tertiary amines or salts thereof
    • C08G18/1808—Catalysts containing secondary or tertiary amines or salts thereof having alkylene polyamine groups
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/30—Low-molecular-weight compounds
    • C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
    • C08G18/3203—Polyhydroxy compounds
    • C08G18/3206—Polyhydroxy compounds aliphatic
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/30—Low-molecular-weight compounds
    • C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
    • C08G18/3225—Polyamines
    • C08G18/3237—Polyamines aromatic
    • C08G18/3243—Polyamines aromatic containing two or more aromatic rings
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/48—Polyethers
    • C08G18/4804—Two or more polyethers of different physical or chemical nature
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/48—Polyethers
    • C08G18/4854—Polyethers containing oxyalkylene groups having four carbon atoms in the alkylene group
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
    • C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
    • C08G18/6666—Compounds of group C08G18/48 or C08G18/52
    • C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
    • C08G18/6674—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
    • C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
    • C08G18/7614—Polyisocyanates or polyisothiocyanates cyclic aromatic containing only one aromatic ring
    • C08G18/7621—Polyisocyanates or polyisothiocyanates cyclic aromatic containing only one aromatic ring being toluene diisocyanate including isomer mixtures
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/02002—Preparing wafers
    • H01L21/02005—Preparing bulk and homogeneous wafers
    • H01L21/02008—Multistep processes
    • H01L21/0201—Specific process step
    • H01L21/02024—Mirror polishing
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2110/00—Foam properties
    • C08G2110/0083—Foam properties prepared using water as the sole blowing agent
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2205/00—Foams characterised by their properties
    • C08J2205/04—Foams characterised by their properties characterised by the foam pores
    • C08J2205/05—Open cells, i.e. more than 50% of the pores are open
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2205/00—Foams characterised by their properties
    • C08J2205/04—Foams characterised by their properties characterised by the foam pores
    • C08J2205/052—Closed cells, i.e. more than 50% of the pores are closed
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C08J2375/04—Polyurethanes
    • C08J2375/08—Polyurethanes from polyethers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Materials Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Polyurethanes Or Polyureas (AREA)
SG11201608004XA 2014-03-31 2015-03-17 Polishing pad and process for producing same SG11201608004XA (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014072366A JP6315246B2 (en) 2014-03-31 2014-03-31 Polishing pad and manufacturing method thereof
PCT/JP2015/057803 WO2015151784A1 (en) 2014-03-31 2015-03-17 Polishing pad and process for producing same

Publications (1)

Publication Number Publication Date
SG11201608004XA true SG11201608004XA (en) 2016-11-29

Family

ID=54240116

Family Applications (1)

Application Number Title Priority Date Filing Date
SG11201608004XA SG11201608004XA (en) 2014-03-31 2015-03-17 Polishing pad and process for producing same

Country Status (8)

Country Link
US (1) US10195714B2 (en)
EP (1) EP3127655B1 (en)
JP (1) JP6315246B2 (en)
KR (1) KR102302626B1 (en)
CN (1) CN106163741B (en)
SG (1) SG11201608004XA (en)
TW (1) TWI642694B (en)
WO (1) WO2015151784A1 (en)

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* Cited by examiner, † Cited by third party
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JP6078606B1 (en) 2015-09-30 2017-02-08 富士重工業株式会社 Automotive air conditioner
JP6633944B2 (en) 2016-03-07 2020-01-22 川崎重工業株式会社 Engine system and control method
JP6868003B2 (en) * 2016-03-30 2021-05-12 株式会社カネカ A method for producing polyethylene-based resin foam particles and a method for producing a polyethylene-based resin in-mold foam molded product.
JP6843548B2 (en) * 2016-08-10 2021-03-17 富士紡ホールディングス株式会社 Polishing pad and its manufacturing method
JP6803712B2 (en) * 2016-09-30 2020-12-23 富士紡ホールディングス株式会社 Abrasive pad
US10813444B2 (en) 2018-05-16 2020-10-27 Jh Rhodes Company, Inc. Porous polymeric polishing bristles and methods for their manufacture
KR101853021B1 (en) * 2017-01-12 2018-04-30 에스케이씨 주식회사 Porous polyurethane polishing pad and preparation method thereof
CN106903596B (en) * 2017-01-23 2018-06-19 安徽禾臣新材料有限公司 TFT attenuated polishing absorption layers
JP6968651B2 (en) * 2017-10-12 2021-11-17 富士紡ホールディングス株式会社 Polishing pad and its manufacturing method
JP7259311B2 (en) * 2017-12-26 2023-04-18 Dic株式会社 Polishing pad and urethane resin composition for polishing pad
JP7141230B2 (en) * 2018-03-30 2022-09-22 富士紡ホールディングス株式会社 Polishing pad and manufacturing method thereof
KR102058877B1 (en) * 2018-04-20 2019-12-24 에스케이씨 주식회사 POROUS POLYURETHANE POLISHING PAD and PREPARATION METHOD THEREOF
WO2020067401A1 (en) * 2018-09-28 2020-04-02 富士紡ホールディングス株式会社 Polishing pad and method for producing polished article
JP2020055101A (en) * 2018-09-28 2020-04-09 富士紡ホールディングス株式会社 Polishing pad and manufacturing method for polished work-piece
JP7384608B2 (en) * 2018-09-28 2023-11-21 富士紡ホールディングス株式会社 Method for manufacturing polishing pads and polishing products
KR102174958B1 (en) * 2019-03-27 2020-11-05 에스케이씨 주식회사 Polishing pad which minimizes occurence of defect and preparation method thereof
JP7311749B2 (en) * 2019-03-29 2023-07-20 富士紡ホールディングス株式会社 polishing pad
JP2021053747A (en) * 2019-09-30 2021-04-08 富士紡ホールディングス株式会社 Polishing pad and method for manufacturing polished product
JP2021053754A (en) * 2019-09-30 2021-04-08 富士紡ホールディングス株式会社 Polishing pad and method for manufacturing polished product
JP2021053748A (en) * 2019-09-30 2021-04-08 富士紡ホールディングス株式会社 Polishing pad and method for manufacturing polished product
JP2021053753A (en) * 2019-09-30 2021-04-08 富士紡ホールディングス株式会社 Polishing pad and method for manufacturing polished product

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CN2187999Y (en) * 1994-05-07 1995-01-25 和洪喜 Cerous oxide-contg. polyester polishing fabric and disk
US6585574B1 (en) * 1998-06-02 2003-07-01 Brian Lombardo Polishing pad with reduced moisture absorption
US20050276967A1 (en) * 2002-05-23 2005-12-15 Cabot Microelectronics Corporation Surface textured microporous polishing pads
JP4659338B2 (en) * 2003-02-12 2011-03-30 Ｈｏｙａ株式会社 Manufacturing method of glass substrate for information recording medium and polishing pad used therefor
US6986705B2 (en) * 2004-04-05 2006-01-17 Rimpad Tech Ltd. Polishing pad and method of making same
CN100356516C (en) * 2004-05-05 2007-12-19 智胜科技股份有限公司 Single-layer polishing pad and method of producing the same
US20060089093A1 (en) * 2004-10-27 2006-04-27 Swisher Robert G Polyurethane urea polishing pad
US7569268B2 (en) * 2007-01-29 2009-08-04 Rohm And Haas Electronic Materials Cmp Holdings, Inc. Chemical mechanical polishing pad
JP5184448B2 (en) * 2009-06-23 2013-04-17 富士紡ホールディングス株式会社 Polishing pad, method for producing the same, and polishing method
JP5385714B2 (en) 2009-07-17 2014-01-08 ニッタ・ハース株式会社 Polishing pad
US20130012108A1 (en) 2009-12-22 2013-01-10 Naichao Li Polishing pad and method of making the same
JP5484145B2 (en) 2010-03-24 2014-05-07 東洋ゴム工業株式会社 Polishing pad
JP2012000714A (en) 2010-06-16 2012-01-05 Sumco Corp Polishing pad and method of polishing semiconductor wafer
JP5738728B2 (en) * 2011-09-22 2015-06-24 東洋ゴム工業株式会社 Polishing pad

Also Published As

Publication number Publication date
TWI642694B (en) 2018-12-01
EP3127655A4 (en) 2017-09-06
US20170014970A1 (en) 2017-01-19
JP2015193057A (en) 2015-11-05
TW201538567A (en) 2015-10-16
WO2015151784A1 (en) 2015-10-08
EP3127655B1 (en) 2022-05-04
US10195714B2 (en) 2019-02-05
EP3127655A1 (en) 2017-02-08
CN106163741B (en) 2019-09-17
KR20160140799A (en) 2016-12-07
JP6315246B2 (en) 2018-04-25
CN106163741A (en) 2016-11-23
KR102302626B1 (en) 2021-09-15

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