JP4593643B2 - 研磨パッド - Google Patents
研磨パッド Download PDFInfo
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- JP4593643B2 JP4593643B2 JP2008063034A JP2008063034A JP4593643B2 JP 4593643 B2 JP4593643 B2 JP 4593643B2 JP 2008063034 A JP2008063034 A JP 2008063034A JP 2008063034 A JP2008063034 A JP 2008063034A JP 4593643 B2 JP4593643 B2 JP 4593643B2
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- polishing
- polyurethane foam
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- isocyanate
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- 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
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- 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
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- 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
- C08G18/4009—Two or more macromolecular compounds not provided for in one single group of groups C08G18/42 - C08G18/64
- C08G18/4018—Mixtures of compounds of group C08G18/42 with compounds of group C08G18/48
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- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/4266—Polycondensates having carboxylic or carbonic ester groups in the main chain prepared from hydroxycarboxylic acids and/or lactones
- C08G18/4269—Lactones
- C08G18/4277—Caprolactone and/or substituted caprolactone
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- C08G18/00—Polymeric products of isocyanates or isothiocyanates
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- C08G18/48—Polyethers
- C08G18/4854—Polyethers containing oxyalkylene groups having four carbon atoms in the alkylene group
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- C08G18/6607—Compounds of groups C08G18/42, C08G18/48, or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
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- C08G18/6607—Compounds of groups C08G18/42, C08G18/48, or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
- C08G18/6611—Compounds of groups C08G18/42, C08G18/48, or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203 having at least three hydroxy groups
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- C—CHEMISTRY; METALLURGY
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
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- C08G18/6633—Compounds of group C08G18/42
- C08G18/6637—Compounds of group C08G18/42 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/664—Compounds of group C08G18/42 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
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- C—CHEMISTRY; METALLURGY
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- 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
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- C08G18/6633—Compounds of group C08G18/42
- C08G18/6637—Compounds of group C08G18/42 with compounds of group C08G18/32 or polyamines of C08G18/38
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- C08G18/6644—Compounds of group C08G18/42 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203 having at least three hydroxy groups
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- 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
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- C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- 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
- C08G18/77—Polyisocyanates or polyisothiocyanates having heteroatoms in addition to the isocyanate or isothiocyanate nitrogen and oxygen or sulfur
- C08G18/78—Nitrogen
- C08G18/79—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
- C08G18/797—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates containing carbodiimide and/or uretone-imine groups
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- C—CHEMISTRY; METALLURGY
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- C08G2101/00—Manufacture of cellular products
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24273—Structurally defined web or sheet [e.g., overall dimension, etc.] including aperture
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/249921—Web or sheet containing structurally defined element or component
- Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
- Y10T428/249975—Void shape specified [e.g., crushed, flat, round, etc.]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/249921—Web or sheet containing structurally defined element or component
- Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
- Y10T428/249978—Voids specified as micro
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/249921—Web or sheet containing structurally defined element or component
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- Y10T428/249978—Voids specified as micro
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
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- Chemical & Material Sciences (AREA)
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- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
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- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Polyurethanes Or Polyureas (AREA)
- Mechanical Treatment Of Semiconductor (AREA)
Description
(平均開口径及び平均気泡径の測定)
作製したポリウレタン発泡体を厚み1mm以下になるべく薄くカミソリ刃で平行に切り出したものをサンプルとした。サンプルをスライドガラス上に固定し、SEM(S−3500N、日立サイエンスシステムズ(株))を用いて100倍で観察した。得られた画像を画像解析ソフト(WinRoof、三谷商事(株))を用いて、任意範囲の全連続気泡の開口径(直径)及び気泡径(直径)を測定し、平均開口径及び平均気泡径を算出した。ただし、楕円状の開口又は気泡の場合は、その面積を円の面積に換算し、円相当径を開口径又は気泡径とした。
JIS Z8807−1976に準拠して行った。作製したポリウレタン発泡体を4cm×8.5cmの短冊状(厚み:任意)に切り出したものをサンプルとし、温度23℃±2℃、湿度50%±5%の環境で16時間静置した。測定には比重計(ザルトリウス社製)を用い、比重を測定した。
JIS K−7312に準拠して行った。作製したポリウレタン発泡体を5cm×5cm(厚み:任意)の大きさに切り出したものをサンプルとし、温度23℃±2℃、湿度50%±5%の環境で16時間静置した。測定時には、サンプルを重ね合わせ、厚み10mm以上とした。硬度計(高分子計器社製、アスカーC型硬度計、加圧面高さ:3mm)を用い、加圧面を接触させてから60秒後の硬度を測定した。
作製した熱硬化性ポリウレタン発泡体を5mm×5mm×厚さ1mmのサイズに切り出してサンプルを得た。該サンプルを70℃のオーブン中で24時間乾燥し、乾燥後の重量(W1)を測定した。乾燥後のサンプルを23℃の純水に24時間浸漬し、その後水中から取り出したサンプルを密閉容器に入れ、遠心分離機(久保田製作所製、KUBOTA−6800)を用いて回転数10000rpm/minの条件で水分を除去した。その後、サンプルの重量(W2)を測定した。
重量変化率(%)は下記式により算出した。
重量変化率(%)={(W2−W1)/W1}×100
1.乾燥状態の圧縮率測定
直径7mmの円形(厚み1mm)に切り出した熱硬化性ポリウレタン発泡体を温度23℃、湿度50%の環境下で40時間静置した。熱分析測定器TMA(SEICO INSTRUMENTS製、SS6000)を用いて下記条件で圧縮率Aを測定した。
圧縮率A(%)={(T1−T2)/T1}×100
T1:サンプルに無負荷状態から29.4kPa(300g/cm2)の応力を負荷して60秒間保持したときのサンプルの厚み
T2:T1の状態から更に176.4kPa(1800g/cm2)の応力を負荷して60秒間保持したときのサンプルの厚み
2.湿潤状態の圧縮率測定
直径7mmの円形(厚み1mm)に切り出した熱硬化性ポリウレタン発泡体を23℃の純水に24時間浸漬し、その後水中から取り出し、前記と同様の方法で圧縮率Bを測定した。
3.圧縮率の変化率は下記式により算出した。
変化率={(圧縮率B−圧縮率A)/圧縮率A}×100
作製した研磨パッドを用いて下記条件でワークを研磨しつつ、研磨速度を10分毎に測定し、初期値から定常値に達するまでの時間をダミー研磨時間とした。また、定常値に達した後の平均研磨速度を測定した。
研磨機:MAT社製、BC−15
圧力:100g/cm2
ヘッド速度:50rpm
定盤速度:40rpm
スラリー:酸化セリウム(昭和電工製、SHOROX F−3)/水(100g/L)
スラリー供給量:100mL/min
ワーク:φ76 0.8t B270(SCHOTT DES AG社製)
ただし、(n−5)枚目からn枚目までの平均研磨速度と、その連続する5回の研磨速度の最大研磨速度と最小研磨速度から、下記式により求めた初期研磨速度安定性(%)が10%以下になった時点を定常値と判断した。
初期研磨速度安定性(%)={(最大研磨速度−最小研磨速度)/平均研磨速度}×100
容器に、数平均分子量650のポリテトラメチレンエーテルグリコール(PTMG650)38重量部、ポリカプロラクトンジオール(ダイセル化学工業社製、プラクセル205、水酸基価:208mgKOH/g、官能基数2)25重量部、ポリカプロラクトントリオール(ダイセル化学工業社製、プラクセル305、水酸基価:305mgKOH/g、官能基数3)35重量部、トリメチロールプロパン(水酸基価:1128mgKOH/g、官能基数3)2重量部、シリコン系界面活性剤(ゴールドシュミット社製、B8443)10重量部、及び触媒(花王製、No.25)0.1重量部を入れ、混合して第2成分(25℃)を調製した。そして、撹拌翼を用いて、回転数900rpmで反応系内に気泡を取り込むように約4分間激しく撹拌を行った。その後、第1成分であるカルボジイミド変性MDI(日本ポリウレタン工業製、ミリオネートMTL、NCOwt%:29wt%、25℃)72.21重量部を容器内に加え(NCO/OH=1.1)、約1分間撹拌して気泡分散ウレタン組成物を調製した。
表1記載の配合比を採用した以外は実施例1と同様の方法で研磨パッドを作製した。表1中の化合物は以下のとおりである。
・PTMG1000:数平均分子量1000のポリテトラメチレンエーテルグリコール
・PTMG650:数平均分子量650のポリテトラメチレンエーテルグリコール
・プラクセル210N:ポリカプロラクトンジオール(ダイセル化学工業社製、水酸基価:110mgKOH/g、官能基数2)
・プラクセル205:ポリカプロラクトンジオール(ダイセル化学工業社製、水酸基価:208mgKOH/g、官能基数2)
・プラクセル305:ポリカプロラクトントリオール(ダイセル化学工業社製、水酸基価:305mgKOH/g、官能基数3)
・DEG:ジエチレングリコール(水酸基価:1057mgKOH/g、官能基数2)
・TMP:トリメチロールプロパン(水酸基価:1128mgKOH/g、官能基数3)
・B8443:シリコン系界面活性剤(ゴールドシュミット社製)
・No.25:触媒(花王製)
・ミリオネートMTL:カルボジイミド変性MDI(日本ポリウレタン工業製、NCOwt%:29wt%)
2:研磨定盤
3:研磨剤(スラリー)
4:研磨対象物(半導体ウエハ、レンズ、ガラス板)
5:支持台(ポリシングヘッド)
6、7:回転軸
Claims (5)
- 基材層上に研磨層が設けられている研磨パッドにおいて、前記研磨層は、開口を有する略球状の連続気泡を含む熱硬化性ポリウレタン発泡体からなり、前記熱硬化性ポリウレタン発泡体は、イソシアネート成分と活性水素基含有化合物とを原料成分として含有し、前記イソシアネート成分は、ジフェニルメタンジイソシアネート及び/又はその変性体を90重量%以上含有し、前記活性水素基含有化合物は、ポリカプロラクトンジオールと、ポリカプロラクトントリオール及び/又はポリカプロラクトンテトラオールとを合計で60〜98重量%、かつイソシアネート基と反応する官能基数が3の化合物を20〜40重量%含有し、イソシアネート成分と活性水素基含有化合物との合計量に対するイソシアネート基濃度が10〜15重量%であり、前記研磨層は、乾燥状態の圧縮率Aと湿潤状態の圧縮率Bの変化率〔{(B−A)/A}×100〕の絶対値が100以下であることを特徴とする研磨パッド。
- 熱硬化性ポリウレタン発泡体は、水に24時間浸漬後の重量変化率が10%以上である請求項1記載の研磨パッド。
- 研磨層は、基材層に自己接着している請求項1又は2記載の研磨パッド。
- 熱硬化性ポリウレタン発泡体は、平均気泡径が40〜100μm、かつ平均開口径が5〜30μmの連続気泡構造を有する請求項1〜3のいずれかに記載の研磨パッド。
- 請求項1〜4のいずれかに記載の研磨パッドを用いて半導体ウエハの表面を研磨する工程を含む半導体デバイスの製造方法。
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008063034A JP4593643B2 (ja) | 2008-03-12 | 2008-03-12 | 研磨パッド |
| PCT/JP2009/053481 WO2009113399A1 (ja) | 2008-03-12 | 2009-02-26 | 研磨パッド |
| CN2009801061033A CN101952943B (zh) | 2008-03-12 | 2009-02-26 | 研磨垫 |
| KR1020107015876A KR101455218B1 (ko) | 2008-03-12 | 2009-02-26 | 연마 패드 |
| US12/864,819 US8476328B2 (en) | 2008-03-12 | 2009-02-26 | Polishing pad |
| TW98106388A TWI431026B (zh) | 2008-03-12 | 2009-02-27 | Polishing pad |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008063034A JP4593643B2 (ja) | 2008-03-12 | 2008-03-12 | 研磨パッド |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2009218500A JP2009218500A (ja) | 2009-09-24 |
| JP2009218500A5 JP2009218500A5 (ja) | 2010-08-19 |
| JP4593643B2 true JP4593643B2 (ja) | 2010-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP2008063034A Active JP4593643B2 (ja) | 2008-03-12 | 2008-03-12 | 研磨パッド |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US8476328B2 (ja) |
| JP (1) | JP4593643B2 (ja) |
| KR (1) | KR101455218B1 (ja) |
| CN (1) | CN101952943B (ja) |
| TW (1) | TWI431026B (ja) |
| WO (1) | WO2009113399A1 (ja) |
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| JP5393434B2 (ja) * | 2008-12-26 | 2014-01-22 | 東洋ゴム工業株式会社 | 研磨パッド及びその製造方法 |
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- 2009-02-26 WO PCT/JP2009/053481 patent/WO2009113399A1/ja not_active Ceased
- 2009-02-26 CN CN2009801061033A patent/CN101952943B/zh active Active
- 2009-02-26 KR KR1020107015876A patent/KR101455218B1/ko active Active
- 2009-02-27 TW TW98106388A patent/TWI431026B/zh active
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| Publication number | Publication date |
|---|---|
| US8476328B2 (en) | 2013-07-02 |
| WO2009113399A1 (ja) | 2009-09-17 |
| KR20100131419A (ko) | 2010-12-15 |
| TW200942557A (en) | 2009-10-16 |
| JP2009218500A (ja) | 2009-09-24 |
| TWI431026B (zh) | 2014-03-21 |
| CN101952943B (zh) | 2012-07-11 |
| KR101455218B1 (ko) | 2014-10-31 |
| US20100317263A1 (en) | 2010-12-16 |
| CN101952943A (zh) | 2011-01-19 |
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