SE431989B - Pa organiska bindemedel baserat friktionsmaterial - Google Patents
Pa organiska bindemedel baserat friktionsmaterialInfo
- Publication number
- SE431989B SE431989B SE7904730A SE7904730A SE431989B SE 431989 B SE431989 B SE 431989B SE 7904730 A SE7904730 A SE 7904730A SE 7904730 A SE7904730 A SE 7904730A SE 431989 B SE431989 B SE 431989B
- Authority
- SE
- Sweden
- Prior art keywords
- composition
- friction
- weight
- friction material
- fibers
- Prior art date
Links
- 239000002783 friction material Substances 0.000 title claims description 30
- 239000011230 binding agent Substances 0.000 title 1
- 239000000203 mixture Substances 0.000 claims description 119
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 49
- 239000002245 particle Substances 0.000 claims description 39
- 229910052799 carbon Inorganic materials 0.000 claims description 31
- 239000010425 asbestos Substances 0.000 claims description 29
- 229910052895 riebeckite Inorganic materials 0.000 claims description 29
- 239000000835 fiber Substances 0.000 claims description 24
- 238000005299 abrasion Methods 0.000 claims description 22
- 229910002804 graphite Inorganic materials 0.000 claims description 20
- 239000010439 graphite Substances 0.000 claims description 20
- 239000003365 glass fiber Substances 0.000 claims description 18
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 14
- 239000002557 mineral fiber Substances 0.000 claims description 13
- 238000000576 coating method Methods 0.000 claims description 11
- 229910052751 metal Inorganic materials 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 11
- 239000003607 modifier Substances 0.000 claims description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 10
- 239000011248 coating agent Substances 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 229920001568 phenolic resin Polymers 0.000 claims description 6
- 229910044991 metal oxide Inorganic materials 0.000 claims description 5
- 150000004706 metal oxides Chemical class 0.000 claims description 5
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 4
- 229920001187 thermosetting polymer Polymers 0.000 claims description 4
- 229910001369 Brass Inorganic materials 0.000 claims description 3
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims description 3
- 239000005751 Copper oxide Substances 0.000 claims description 3
- 239000010951 brass Substances 0.000 claims description 3
- 229910000431 copper oxide Inorganic materials 0.000 claims description 3
- 230000006866 deterioration Effects 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 3
- 230000013011 mating Effects 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 claims description 3
- 239000011707 mineral Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 description 14
- 239000000843 powder Substances 0.000 description 12
- 238000012360 testing method Methods 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000004484 Briquette Substances 0.000 description 5
- 238000005498 polishing Methods 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 230000036541 health Effects 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 3
- 229910021383 artificial graphite Inorganic materials 0.000 description 3
- 239000004615 ingredient Substances 0.000 description 3
- 239000000395 magnesium oxide Substances 0.000 description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 3
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000005011 phenolic resin Substances 0.000 description 3
- 239000010802 sludge Substances 0.000 description 3
- 238000006467 substitution reaction Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 244000226021 Anacardium occidentale Species 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 2
- 239000000292 calcium oxide Substances 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 235000020226 cashew nut Nutrition 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000008199 coating composition Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 230000001747 exhibiting effect Effects 0.000 description 2
- 239000008240 homogeneous mixture Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 1
- 239000010428 baryte Substances 0.000 description 1
- 229910052601 baryte Inorganic materials 0.000 description 1
- 229910052810 boron oxide Inorganic materials 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 229910021382 natural graphite Inorganic materials 0.000 description 1
- 235000014571 nuts Nutrition 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002336 repolarization Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- 229910001948 sodium oxide Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D69/02—Composition of linings ; Methods of manufacturing
- F16D69/025—Compositions based on an organic binder
- F16D69/026—Compositions based on an organic binder containing fibres
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D69/02—Composition of linings ; Methods of manufacturing
- F16D69/021—Composition of linings ; Methods of manufacturing containing asbestos
- F16D69/022—Composition of linings ; Methods of manufacturing containing asbestos in the form of fibres
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2200/00—Materials; Production methods therefor
- F16D2200/006—Materials; Production methods therefor containing fibres or particles
- F16D2200/0069—Materials; Production methods therefor containing fibres or particles being characterised by their size
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Braking Arrangements (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/911,848 US4175070A (en) | 1978-06-02 | 1978-06-02 | High carbon friction material |
Publications (2)
Publication Number | Publication Date |
---|---|
SE7904730L SE7904730L (sv) | 1979-12-03 |
SE431989B true SE431989B (sv) | 1984-03-12 |
Family
ID=25430962
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE7904730A SE431989B (sv) | 1978-06-02 | 1979-05-30 | Pa organiska bindemedel baserat friktionsmaterial |
Country Status (15)
Country | Link |
---|---|
US (1) | US4175070A (es) |
JP (1) | JPS5527380A (es) |
AR (1) | AR222487A1 (es) |
AU (1) | AU527045B2 (es) |
BR (1) | BR7903530A (es) |
CA (1) | CA1129574A (es) |
DE (1) | DE2922251A1 (es) |
ES (1) | ES8702460A1 (es) |
FR (1) | FR2427514A1 (es) |
GB (1) | GB2022110B (es) |
IT (1) | IT1121756B (es) |
MX (1) | MX150661A (es) |
SE (1) | SE431989B (es) |
SU (1) | SU1114340A3 (es) |
YU (1) | YU39693B (es) |
Families Citing this family (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2429066A1 (fr) * | 1978-06-20 | 1980-01-18 | Roulements Soc Nouvelle | Produit, notamment pour la fabrication de garnitures de friction |
DE2934209C2 (de) * | 1979-05-28 | 1982-04-01 | Akebono Brake Industry Co. Ltd., Tokyo | Reibungsmaterial |
FR2489455B1 (fr) * | 1980-09-04 | 1986-04-11 | Valeo | Garniture de friction, notamment pour freins, embrayages et autres applications |
JPS58191339A (ja) * | 1982-04-30 | 1983-11-08 | Aisin Chem Co Ltd | 湿式摩擦材 |
JPS5980539A (ja) * | 1982-10-28 | 1984-05-10 | Aisin Chem Co Ltd | 湿式摩擦材 |
JPS61141782A (ja) * | 1984-12-13 | 1986-06-28 | Sumitomo Electric Ind Ltd | 摩擦材 |
JPS6362925A (ja) * | 1986-08-29 | 1988-03-19 | Toyota Motor Corp | レジンモ−ルド系クラツチ用摩擦材料組成物 |
JPS6369833A (ja) * | 1986-09-11 | 1988-03-29 | Toyota Motor Corp | 非研磨モ−ルド摩擦部材の製造方法 |
US5273819A (en) * | 1986-10-15 | 1993-12-28 | Jex Edward R | Fiber reinforced resin composites, method of manufacture and improved composite products |
US4815572A (en) * | 1987-07-24 | 1989-03-28 | Parker-Hannifin Corporation | Brake system with improved brake material |
DE3901366C2 (de) * | 1989-01-18 | 1997-07-17 | Dieffenbacher Gmbh Maschf | Verfahren und Vorrichtung zur Beheizung einer kontinuierlich arbeitenden Heizplattenpresse |
US5118544A (en) * | 1989-09-21 | 1992-06-02 | Ceram-Sna Inc. | Heat resistant composition processable by vacuum forming |
JP2815199B2 (ja) * | 1989-10-18 | 1998-10-27 | 東芝タンガロイ株式会社 | 湿式摩擦材料 |
US5250588A (en) * | 1990-01-16 | 1993-10-05 | Ceram Sna Inc. | Organic friction material composition for use to produce friction linings |
US5076986A (en) * | 1990-10-03 | 1991-12-31 | Ceram Sna Inc. | Process for manufacturing a composite material |
US5352305A (en) * | 1991-10-16 | 1994-10-04 | Dayton Walther Corporation | Prestressed brake drum or rotor |
US5339931A (en) * | 1993-05-07 | 1994-08-23 | Allied-Signal Inc. | Porous copper powder modified friction material |
US5573579A (en) * | 1994-03-17 | 1996-11-12 | Osaka Gas Company, Ltd. | Method for producing friction material |
US6572712B2 (en) | 2000-12-14 | 2003-06-03 | Waupaca Foundry, Inc. | Compacted graphite iron brake drum |
US7033485B2 (en) * | 2001-05-11 | 2006-04-25 | Koppers Industries Of Delaware, Inc. | Coal tar and hydrocarbon mixture pitch production using a high efficiency evaporative distillation process |
US7806975B2 (en) * | 2005-04-26 | 2010-10-05 | Borgwarner Inc. | Friction material |
JP2007071220A (ja) * | 2005-09-02 | 2007-03-22 | Advics:Kk | 摩擦対 |
MD86Y (ro) * | 2006-10-04 | 2009-09-30 | Владимир КЛЕЙМЕНОВ | Compoziţie a materialului de fricţiune |
EP2028221A1 (en) * | 2007-08-03 | 2009-02-25 | Borgwarner, Inc. | Friction material with silicon |
RU2473571C2 (ru) * | 2008-12-29 | 2013-01-27 | Владимир Иванович Колесников | Способ получения высокопрочного фрикционного пресс-материала |
CN102492395B (zh) * | 2011-11-29 | 2013-11-06 | 重庆红宇摩擦制品有限公司 | 加入高回弹石墨的低金属摩擦材料的配方及制备方法 |
CN107035794A (zh) | 2012-10-26 | 2017-08-11 | 住友电木株式会社 | 背板用组合物、背板、制动片和卡钳装置 |
CN103629281A (zh) * | 2013-11-15 | 2014-03-12 | 宁国飞鹰汽车零部件股份有限公司 | 一种陶瓷型公交车用高性能盘式刹车片及其制备方法 |
US10233988B2 (en) | 2015-09-23 | 2019-03-19 | Akebono Brake Industry Co., Ltd | Friction material |
RU2630527C1 (ru) * | 2016-09-09 | 2017-09-11 | Российская Федерация в лице Министерства промышленности и торговли Российской Федерации | Способ обработки мелкодисперсных порошковых наполнителей композиционных материалов |
CN112625458B (zh) * | 2020-12-11 | 2022-09-09 | 黄山菲英汽车零部件有限公司 | 一种高性能汽车刹车片摩擦材料及其刹车片 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1290674A (fr) * | 1961-05-30 | 1962-04-13 | Johns Manville | Composition de patin de frein |
US3297599A (en) * | 1965-05-24 | 1967-01-10 | Johns Manville | Friction composition for high energy service |
US3477983A (en) * | 1966-06-23 | 1969-11-11 | Abex Corp | Friction elements |
FR1575746A (es) * | 1968-04-26 | 1969-07-25 | ||
US4051097A (en) * | 1972-01-31 | 1977-09-27 | The Bendix Corporation | Carbon metallic friction composition |
CA998792A (en) * | 1972-01-31 | 1976-10-19 | Francis W. Aldrich | Carbon and metal or metal oxide friction compositions |
CA991805A (en) * | 1972-05-15 | 1976-06-29 | Johns-Manville Corporation | Molded composition disc brake |
US3856120A (en) * | 1972-12-14 | 1974-12-24 | Bendix Corp | Disc brake with semi-metallic and organic friction pads |
US3832325A (en) * | 1973-04-23 | 1974-08-27 | Johns Manville | Wear resistant composition brake block |
JPS5061384A (es) * | 1973-10-02 | 1975-05-26 | ||
US3972394A (en) * | 1975-09-08 | 1976-08-03 | The Bendix Corporation | Friction material |
GB1604839A (en) * | 1977-08-10 | 1981-12-16 | Ferodo Ltd | Friction materials |
-
1978
- 1978-06-02 US US05/911,848 patent/US4175070A/en not_active Expired - Lifetime
-
1979
- 1979-05-21 YU YU1185/79A patent/YU39693B/xx unknown
- 1979-05-22 AU AU47276/79A patent/AU527045B2/en not_active Ceased
- 1979-05-22 GB GB7917770A patent/GB2022110B/en not_active Expired
- 1979-05-24 CA CA328,221A patent/CA1129574A/en not_active Expired
- 1979-05-29 ES ES481008A patent/ES8702460A1/es not_active Expired
- 1979-05-30 SE SE7904730A patent/SE431989B/sv not_active IP Right Cessation
- 1979-05-30 FR FR7913829A patent/FR2427514A1/fr active Granted
- 1979-05-31 MX MX177895A patent/MX150661A/es unknown
- 1979-05-31 DE DE19792922251 patent/DE2922251A1/de not_active Ceased
- 1979-06-01 SU SU792775405A patent/SU1114340A3/ru active
- 1979-06-01 IT IT23206/79A patent/IT1121756B/it active
- 1979-06-01 BR BR7903530A patent/BR7903530A/pt unknown
- 1979-06-01 JP JP6878279A patent/JPS5527380A/ja active Pending
- 1979-06-10 AR AR276786A patent/AR222487A1/es active
Also Published As
Publication number | Publication date |
---|---|
AR222487A1 (es) | 1981-05-29 |
MX150661A (es) | 1984-06-19 |
YU118579A (en) | 1983-02-28 |
IT7923206A0 (it) | 1979-06-01 |
ES8702460A1 (es) | 1986-12-01 |
YU39693B (en) | 1985-03-20 |
DE2922251A1 (de) | 1979-12-06 |
GB2022110B (en) | 1982-09-29 |
FR2427514B1 (es) | 1983-08-26 |
SE7904730L (sv) | 1979-12-03 |
IT1121756B (it) | 1986-04-23 |
FR2427514A1 (fr) | 1979-12-28 |
CA1129574A (en) | 1982-08-10 |
BR7903530A (pt) | 1980-01-22 |
GB2022110A (en) | 1979-12-12 |
SU1114340A3 (ru) | 1984-09-15 |
JPS5527380A (en) | 1980-02-27 |
US4175070A (en) | 1979-11-20 |
AU4727679A (en) | 1979-12-06 |
AU527045B2 (en) | 1983-02-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
SE431989B (sv) | Pa organiska bindemedel baserat friktionsmaterial | |
US6372817B1 (en) | Friction material composition, production of the same and friction material | |
JP5124814B2 (ja) | ノンアスベスト摩擦材 | |
JPS5918429B2 (ja) | 有機摩擦材料 | |
EP1031754B1 (en) | Non-asbestos friction materials | |
KR20180134936A (ko) | 마찰재 | |
US4125496A (en) | Friction material | |
JPH03247628A (ja) | 非石綿系摩擦材 | |
EP1227262A1 (en) | Non-asbestos friction material | |
GB2085019A (en) | Friction material | |
US7588609B2 (en) | Friction material compositions and additives | |
JP2003313312A (ja) | 非石綿系摩擦材 | |
JPH108035A (ja) | 非石綿系摩擦材 | |
KR100878945B1 (ko) | 자동차용 브레이크 마찰재 및 그 제조 방법 | |
KR830001417B1 (ko) | 유리섬유의 마찰재를 제조하는 공정 | |
US5217528A (en) | Non-asbestos friction material | |
JP2008201930A (ja) | 摩擦材 | |
KR20100091750A (ko) | 자동차용 브레이크 마찰재 및 그 제조 방법 | |
KR102193788B1 (ko) | 브레이크 마찰재 조성물 | |
US20240076535A1 (en) | Environment-friendly friction material composition | |
KR102047849B1 (ko) | 주철 파우더를 포함하는 브레이크 마찰재 조성물 | |
KR820002157B1 (ko) | 유기물이 기본이 된 마찰물질 | |
JP2001011430A (ja) | 摩擦材 | |
JPS6215281A (ja) | 摩擦材組成物 | |
JPH10158631A (ja) | 摩擦材 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
NUG | Patent has lapsed |
Ref document number: 7904730-4 Effective date: 19890525 Format of ref document f/p: F |