NO172716C - Delefilm for understoettelse av halvlederskiver, samt fremgangsmaate for fremstilling av enkelte brikker fra en halvlederskive - Google Patents
Delefilm for understoettelse av halvlederskiver, samt fremgangsmaate for fremstilling av enkelte brikker fra en halvlederskiveInfo
- Publication number
- NO172716C NO172716C NO843113A NO843113A NO172716C NO 172716 C NO172716 C NO 172716C NO 843113 A NO843113 A NO 843113A NO 843113 A NO843113 A NO 843113A NO 172716 C NO172716 C NO 172716C
- Authority
- NO
- Norway
- Prior art keywords
- semiconductor
- particulars
- patches
- procedure
- manufacture
- Prior art date
Links
- 239000004065 semiconductor Substances 0.000 title 2
- 238000004519 manufacturing process Methods 0.000 title 1
- 238000000034 method Methods 0.000 title 1
Classifications
-
- 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
-
- 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
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/683—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping
- H01L21/6835—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using temporarily an auxiliary support
- H01L21/6836—Wafer tapes, e.g. grinding or dicing support tapes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D5/00—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor
- B28D5/0005—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor by breaking, e.g. dicing
- B28D5/0052—Means for supporting or holding work during breaking
-
- 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
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
-
- 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
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
- H01L21/304—Mechanical treatment, e.g. grinding, polishing, cutting
- H01L21/3043—Making grooves, e.g. cutting
-
- 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
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67132—Apparatus for placing on an insulating substrate, e.g. tape
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2221/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof covered by H01L21/00
- H01L2221/67—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere
- H01L2221/683—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere for supporting or gripping
- H01L2221/68304—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere for supporting or gripping using temporarily an auxiliary support
- H01L2221/68327—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere for supporting or gripping using temporarily an auxiliary support used during dicing or grinding
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2223/00—Details relating to semiconductor or other solid state devices covered by the group H01L23/00
- H01L2223/544—Marks applied to semiconductor devices or parts
- H01L2223/5442—Marks applied to semiconductor devices or parts comprising non digital, non alphanumeric information, e.g. symbols
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2223/00—Details relating to semiconductor or other solid state devices covered by the group H01L23/00
- H01L2223/544—Marks applied to semiconductor devices or parts
- H01L2223/54426—Marks applied to semiconductor devices or parts for alignment
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2223/00—Details relating to semiconductor or other solid state devices covered by the group H01L23/00
- H01L2223/544—Marks applied to semiconductor devices or parts
- H01L2223/54453—Marks applied to semiconductor devices or parts for use prior to dicing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/80—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected
- H01L2224/83—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected using a layer connector
- H01L2224/8319—Arrangement of the layer connectors prior to mounting
- H01L2224/83191—Arrangement of the layer connectors prior to mounting wherein the layer connectors are disposed only on the semiconductor or solid-state body
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/01—Chemical elements
- H01L2924/01005—Boron [B]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/01—Chemical elements
- H01L2924/01006—Carbon [C]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/01—Chemical elements
- H01L2924/01014—Silicon [Si]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/01—Chemical elements
- H01L2924/01046—Palladium [Pd]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/01—Chemical elements
- H01L2924/01073—Tantalum [Ta]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/01—Chemical elements
- H01L2924/01079—Gold [Au]
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Dicing (AREA)
- Adhesive Tapes (AREA)
- Container, Conveyance, Adherence, Positioning, Of Wafer (AREA)
- Laminated Bodies (AREA)
- Holding Or Fastening Of Disk On Rotational Shaft (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Die Bonding (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US51993683A | 1983-08-03 | 1983-08-03 |
Publications (3)
Publication Number | Publication Date |
---|---|
NO843113L NO843113L (no) | 1985-02-04 |
NO172716B NO172716B (no) | 1993-05-18 |
NO172716C true NO172716C (no) | 1993-08-25 |
Family
ID=24070468
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO843113A NO172716C (no) | 1983-08-03 | 1984-08-02 | Delefilm for understoettelse av halvlederskiver, samt fremgangsmaate for fremstilling av enkelte brikker fra en halvlederskive |
Country Status (15)
Country | Link |
---|---|
EP (1) | EP0134606B1 (no) |
JP (1) | JPS6057642A (no) |
KR (1) | KR920006894B1 (no) |
AU (1) | AU559159B2 (no) |
BR (1) | BR8403579A (no) |
CA (1) | CA1244294A (no) |
DE (1) | DE3477311D1 (no) |
HK (1) | HK62789A (no) |
IE (1) | IE55238B1 (no) |
IL (1) | IL72141A (no) |
MY (1) | MY100982A (no) |
NO (1) | NO172716C (no) |
NZ (1) | NZ209093A (no) |
PH (1) | PH23587A (no) |
SG (1) | SG35489G (no) |
Families Citing this family (40)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5049434A (en) * | 1984-04-30 | 1991-09-17 | National Starch And Chemical Investment Holding Corporation | Pre-patterned device substrate device-attach adhesive transfer system |
KR900001236B1 (ko) * | 1984-05-29 | 1990-03-05 | 미쓰이도오아쓰 가가꾸 가부시끼가이샤 | 웨이퍼 가공용필름 |
US4687693A (en) * | 1985-06-13 | 1987-08-18 | Stauffer Chemical Company | Adhesively mountable die attach film |
JPH0691057B2 (ja) * | 1985-09-07 | 1994-11-14 | 日東電工株式会社 | 半導体ウエハの保護部材 |
EP0252739B1 (en) * | 1986-07-09 | 1993-10-06 | LINTEC Corporation | Adhesive sheets for sticking wafers thereto |
US5030308A (en) * | 1986-07-14 | 1991-07-09 | National Starch And Chemical Investment Holding Corporation | Method of bonding a semiconductor chip to a substrate |
US4793883A (en) * | 1986-07-14 | 1988-12-27 | National Starch And Chemical Corporation | Method of bonding a semiconductor chip to a substrate |
JPH01143211A (ja) * | 1987-11-27 | 1989-06-05 | Takatori Haitetsuku:Kk | ウエハーに対する保護テープの貼付け切り抜き方法および装置 |
JPH05179211A (ja) * | 1991-12-30 | 1993-07-20 | Nitto Denko Corp | ダイシング・ダイボンドフイルム |
WO1994024704A1 (en) * | 1993-04-12 | 1994-10-27 | Bolger Justin C | Area bonding conductive adhesive preforms |
KR200174655Y1 (ko) * | 1994-04-30 | 2000-03-02 | 유무성 | 반도체 일반 및 LOC(Lead On Chip) 리드프레임의 테이핑장치 |
JP4230080B2 (ja) | 2000-02-18 | 2009-02-25 | リンテック株式会社 | ウエハ貼着用粘着シート |
FR2815468B1 (fr) * | 2000-10-12 | 2003-10-03 | Gemplus Card Int | Procede pour le report de microcircuit sur un support |
FR2831148B1 (fr) | 2001-10-22 | 2004-01-02 | Gemplus Card Int | Procede et dispositif de manipulation d'un wafer |
US6620651B2 (en) * | 2001-10-23 | 2003-09-16 | National Starch And Chemical Investment Holding Corporation | Adhesive wafers for die attach application |
JP4107417B2 (ja) | 2002-10-15 | 2008-06-25 | 日東電工株式会社 | チップ状ワークの固定方法 |
JP4283596B2 (ja) | 2003-05-29 | 2009-06-24 | 日東電工株式会社 | チップ状ワークの固定方法 |
JP4536367B2 (ja) * | 2003-12-24 | 2010-09-01 | 東レ・ダウコーニング株式会社 | ダイシングダイボンディング用シート及びその製造方法 |
JP4275522B2 (ja) | 2003-12-26 | 2009-06-10 | 日東電工株式会社 | ダイシング・ダイボンドフィルム |
JP4443962B2 (ja) | 2004-03-17 | 2010-03-31 | 日東電工株式会社 | ダイシング・ダイボンドフィルム |
US20100019365A1 (en) | 2006-09-12 | 2010-01-28 | Nitto Denko Corporation | Dicing/die bonding film |
JP4430085B2 (ja) | 2007-03-01 | 2010-03-10 | 日東電工株式会社 | ダイシング・ダイボンドフィルム |
JP4717052B2 (ja) | 2007-11-08 | 2011-07-06 | 日東電工株式会社 | ダイシング・ダイボンドフィルム |
JP4717051B2 (ja) | 2007-11-08 | 2011-07-06 | 日東電工株式会社 | ダイシング・ダイボンドフィルム |
JP4717085B2 (ja) | 2008-01-18 | 2011-07-06 | 日東電工株式会社 | ダイシング・ダイボンドフィルム |
JP4717086B2 (ja) | 2008-01-18 | 2011-07-06 | 日東電工株式会社 | ダイシング・ダイボンドフィルム |
JP4553400B2 (ja) | 2008-02-18 | 2010-09-29 | 日東電工株式会社 | ダイシング・ダイボンドフィルム |
JP2010056544A (ja) | 2008-08-01 | 2010-03-11 | Nitto Denko Corp | ダイシング・ダイボンドフィルム |
EP2151858A2 (en) | 2008-08-04 | 2010-02-10 | Nitto Denko Corporation | Dicing die-bonding film |
EP2151857A2 (en) | 2008-08-04 | 2010-02-10 | Nitto Denko Corporation | Dicing die-bonding film |
EP2151860A2 (en) | 2008-08-04 | 2010-02-10 | Nitto Denko Corporation | Dicing die-bonding film |
JP5519971B2 (ja) | 2008-11-26 | 2014-06-11 | 日東電工株式会社 | ダイシング・ダイボンドフィルム及び半導体装置の製造方法 |
JP2012079936A (ja) | 2010-10-01 | 2012-04-19 | Nitto Denko Corp | ダイシング・ダイボンドフィルム、及び、半導体装置の製造方法 |
JP5023225B1 (ja) | 2011-03-10 | 2012-09-12 | 日東電工株式会社 | 半導体装置用フィルムの製造方法 |
JP5398083B2 (ja) | 2011-03-11 | 2014-01-29 | 日東電工株式会社 | ダイボンドフィルム及びその用途 |
JP5036887B1 (ja) | 2011-03-11 | 2012-09-26 | 日東電工株式会社 | 保護フィルム付きダイシングフィルム |
JP5930625B2 (ja) * | 2011-08-03 | 2016-06-08 | 日東電工株式会社 | ダイボンドフィルム、ダイシング・ダイボンドフィルム、及び、半導体装置 |
JP5976326B2 (ja) | 2012-01-25 | 2016-08-23 | 日東電工株式会社 | 半導体装置の製造方法、及び、当該半導体装置の製造方法に用いられる接着フィルム |
JP6193663B2 (ja) | 2013-07-26 | 2017-09-06 | 日東電工株式会社 | ダイシングテープ付きダイボンドフィルム、及び、半導体装置の製造方法 |
KR102675134B1 (ko) * | 2020-03-31 | 2024-06-12 | 동우 화인켐 주식회사 | 도전성 필름 적층체 및 이의 제조 방법 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1061014B (de) * | 1957-07-03 | 1959-07-09 | Minnesota Mining & Mfg | Klebkraeftige Klebfolie oder Klebband, insbesondere mit einem biegsamen Traeger aus einem nichtfaserigen Film mit einer klebrigen Vorderseite und einem Rueckseitenaufstrich niederer Adhaesion |
FR1484458A (no) * | 1965-06-25 | 1967-09-15 | ||
US3579105A (en) * | 1969-03-03 | 1971-05-18 | Perkin Elmer Corp | Digital readout system having an automatic zero-setting circuit |
US4285433A (en) * | 1979-12-19 | 1981-08-25 | Western Electric Co., Inc. | Method and apparatus for removing dice from a severed wafer |
JPS5695974A (en) * | 1979-12-28 | 1981-08-03 | Shin Etsu Chem Co Ltd | Releasable silicone type adhesive base |
JPS6048104B2 (ja) * | 1980-01-30 | 1985-10-25 | 三洋電機株式会社 | 半導体ウエハの分割方法 |
JPS56126937A (en) * | 1980-03-11 | 1981-10-05 | Toshiba Corp | Cutting apparatus for semiconductor wafer |
JPS57145339A (en) * | 1981-03-04 | 1982-09-08 | Oki Electric Ind Co Ltd | Manufacture of semiconductor device |
JPS5815248A (ja) * | 1981-07-20 | 1983-01-28 | Nec Corp | 半導体素子の製造方法 |
JPS59930A (ja) * | 1982-06-25 | 1984-01-06 | Mitsubishi Electric Corp | 半導体素子のマウント方法 |
JPS596551A (ja) * | 1982-07-05 | 1984-01-13 | Nec Corp | 半導体素子のダイボンデイング方法 |
JPS5957438A (ja) * | 1982-09-27 | 1984-04-03 | Toshiba Corp | 半導体装置の組立方法 |
AU565919B2 (en) * | 1983-06-13 | 1987-10-01 | Minnesota Mining And Manufacturing Company | Electrically and thermally conductive adhesive transfer tape |
-
1984
- 1984-06-12 IE IE1466/84A patent/IE55238B1/en not_active IP Right Cessation
- 1984-06-18 IL IL72141A patent/IL72141A/xx not_active IP Right Cessation
- 1984-06-25 CA CA000457372A patent/CA1244294A/en not_active Expired
- 1984-07-18 BR BR8403579A patent/BR8403579A/pt unknown
- 1984-07-26 AU AU31200/84A patent/AU559159B2/en not_active Ceased
- 1984-07-31 PH PH31048A patent/PH23587A/en unknown
- 1984-07-31 JP JP59159480A patent/JPS6057642A/ja active Pending
- 1984-08-02 EP EP84201140A patent/EP0134606B1/en not_active Expired
- 1984-08-02 DE DE8484201140T patent/DE3477311D1/de not_active Expired
- 1984-08-02 NO NO843113A patent/NO172716C/no unknown
- 1984-08-02 KR KR1019840004607A patent/KR920006894B1/ko not_active IP Right Cessation
- 1984-08-02 NZ NZ209093A patent/NZ209093A/en unknown
-
1987
- 1987-10-01 MY MYPI87002810A patent/MY100982A/en unknown
-
1989
- 1989-06-02 SG SG35489A patent/SG35489G/en unknown
- 1989-08-03 HK HK627/89A patent/HK62789A/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
IL72141A (en) | 1988-02-29 |
CA1244294A (en) | 1988-11-08 |
BR8403579A (pt) | 1985-06-25 |
NO172716B (no) | 1993-05-18 |
JPS6057642A (ja) | 1985-04-03 |
AU3120084A (en) | 1985-02-07 |
KR920006894B1 (ko) | 1992-08-21 |
NZ209093A (en) | 1986-10-08 |
EP0134606A3 (en) | 1985-11-27 |
MY100982A (en) | 1991-06-15 |
KR850002170A (ko) | 1985-05-06 |
IE55238B1 (en) | 1990-07-04 |
NO843113L (no) | 1985-02-04 |
EP0134606A2 (en) | 1985-03-20 |
DE3477311D1 (en) | 1989-04-20 |
AU559159B2 (en) | 1987-02-26 |
HK62789A (en) | 1989-08-11 |
SG35489G (en) | 1989-10-13 |
IE841466L (en) | 1985-02-03 |
EP0134606B1 (en) | 1989-03-15 |
IL72141A0 (en) | 1984-10-31 |
PH23587A (en) | 1989-09-11 |
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