KR840005060A - 금속화층(金屬化層)을 갖는 sic 소결체(燒結體)와 그 제법 - Google Patents

금속화층(金屬化層)을 갖는 sic 소결체(燒結體)와 그 제법 Download PDF

Info

Publication number
KR840005060A
KR840005060A KR1019830002696A KR830002696A KR840005060A KR 840005060 A KR840005060 A KR 840005060A KR 1019830002696 A KR1019830002696 A KR 1019830002696A KR 830002696 A KR830002696 A KR 830002696A KR 840005060 A KR840005060 A KR 840005060A
Authority
KR
South Korea
Prior art keywords
metallization layer
sic
sintered compact
weight
binder
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.)
Withdrawn
Application number
KR1019830002696A
Other languages
English (en)
Korean (ko)
Inventor
히데오 스즈끼 (외 3)
Original Assignee
미다 가쓰시게
가부시끼가이샤 히다찌세이사꾸쇼
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 미다 가쓰시게, 가부시끼가이샤 히다찌세이사꾸쇼 filed Critical 미다 가쓰시게
Publication of KR840005060A publication Critical patent/KR840005060A/ko
Withdrawn legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B37/00Joining burned ceramic articles with other burned ceramic articles or other articles by heating
    • C04B37/02Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles
    • C04B37/023Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles characterised by the interlayer used
    • C04B37/025Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles characterised by the interlayer used consisting of glass or ceramic material
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/52Multiple coating or impregnating multiple coating or impregnating with the same composition or with compositions only differing in the concentration of the constituents, is classified as single coating or impregnation
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/80After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
    • C04B41/81Coating or impregnation
    • C04B41/89Coating or impregnation for obtaining at least two superposed coatings having different compositions
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10WGENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
    • H10W40/00Arrangements for thermal protection or thermal control
    • H10W40/20Arrangements for cooling
    • H10W40/25Arrangements for cooling characterised by their materials
    • H10W40/259Ceramics or glasses
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10WGENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
    • H10W70/00Package substrates; Interposers; Redistribution layers [RDL]
    • H10W70/01Manufacture or treatment
    • H10W70/05Manufacture or treatment of insulating or insulated package substrates, or of interposers, or of redistribution layers
    • H10W70/098Applying pastes or inks, e.g. screen printing
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10WGENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
    • H10W70/00Package substrates; Interposers; Redistribution layers [RDL]
    • H10W70/60Insulating or insulated package substrates; Interposers; Redistribution layers
    • H10W70/67Insulating or insulated package substrates; Interposers; Redistribution layers characterised by their insulating layers or insulating parts
    • H10W70/69Insulating materials thereof
    • H10W70/692Ceramics or glasses
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/02Aspects relating to interlayers, e.g. used to join ceramic articles with other articles by heating
    • C04B2237/04Ceramic interlayers
    • C04B2237/06Oxidic interlayers
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/30Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
    • C04B2237/32Ceramic
    • C04B2237/36Non-oxidic
    • C04B2237/365Silicon carbide
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/30Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
    • C04B2237/40Metallic
    • C04B2237/407Copper
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/30Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
    • C04B2237/40Metallic
    • C04B2237/408Noble metals, e.g. palladium, platina or silver
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10WGENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
    • H10W72/00Interconnections or connectors in packages
    • H10W72/50Bond wires
    • H10W72/531Shapes of wire connectors
    • H10W72/5363Shapes of wire connectors the connected ends being wedge-shaped
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10WGENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
    • H10W72/00Interconnections or connectors in packages
    • H10W72/50Bond wires
    • H10W72/551Materials of bond wires
    • H10W72/552Materials of bond wires comprising metals or metalloids, e.g. silver
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10WGENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
    • H10W72/00Interconnections or connectors in packages
    • H10W72/50Bond wires
    • H10W72/551Materials of bond wires
    • H10W72/552Materials of bond wires comprising metals or metalloids, e.g. silver
    • H10W72/5522Materials of bond wires comprising metals or metalloids, e.g. silver comprising gold [Au]
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10WGENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
    • H10W72/00Interconnections or connectors in packages
    • H10W72/50Bond wires
    • H10W72/551Materials of bond wires
    • H10W72/552Materials of bond wires comprising metals or metalloids, e.g. silver
    • H10W72/5524Materials of bond wires comprising metals or metalloids, e.g. silver comprising aluminium [Al]
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10WGENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
    • H10W72/00Interconnections or connectors in packages
    • H10W72/50Bond wires
    • H10W72/551Materials of bond wires
    • H10W72/552Materials of bond wires comprising metals or metalloids, e.g. silver
    • H10W72/5525Materials of bond wires comprising metals or metalloids, e.g. silver comprising copper [Cu]
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10WGENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
    • H10W72/00Interconnections or connectors in packages
    • H10W72/851Dispositions of multiple connectors or interconnections
    • H10W72/874On different surfaces
    • H10W72/884Die-attach connectors and bond wires
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10WGENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
    • H10W90/00Package configurations
    • H10W90/701Package configurations characterised by the relative positions of pads or connectors relative to package parts
    • H10W90/721Package configurations characterised by the relative positions of pads or connectors relative to package parts of bump connectors
    • H10W90/724Package configurations characterised by the relative positions of pads or connectors relative to package parts of bump connectors between a chip and a stacked insulating package substrate, interposer or RDL
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10WGENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
    • H10W90/00Package configurations
    • H10W90/701Package configurations characterised by the relative positions of pads or connectors relative to package parts
    • H10W90/731Package configurations characterised by the relative positions of pads or connectors relative to package parts of die-attach connectors
    • H10W90/734Package configurations characterised by the relative positions of pads or connectors relative to package parts of die-attach connectors between a chip and a stacked insulating package substrate, interposer or RDL
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10WGENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
    • H10W90/00Package configurations
    • H10W90/701Package configurations characterised by the relative positions of pads or connectors relative to package parts
    • H10W90/731Package configurations characterised by the relative positions of pads or connectors relative to package parts of die-attach connectors
    • H10W90/736Package configurations characterised by the relative positions of pads or connectors relative to package parts of die-attach connectors between a chip and a stacked lead frame, conducting package substrate or heat sink
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10WGENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
    • H10W90/00Package configurations
    • H10W90/701Package configurations characterised by the relative positions of pads or connectors relative to package parts
    • H10W90/751Package configurations characterised by the relative positions of pads or connectors relative to package parts of bond wires
    • H10W90/756Package configurations characterised by the relative positions of pads or connectors relative to package parts of bond wires between a chip and a stacked lead frame, conducting package substrate or heat sink

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Parts Printed On Printed Circuit Boards (AREA)
  • Ceramic Products (AREA)
  • Non-Insulated Conductors (AREA)
  • Laminated Bodies (AREA)
KR1019830002696A 1982-06-16 1983-06-16 금속화층(金屬化層)을 갖는 sic 소결체(燒結體)와 그 제법 Withdrawn KR840005060A (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP57102202A JPS58223678A (ja) 1982-06-16 1982-06-16 金属化層を有するSiC焼結体とその製法
JP102202 1982-06-16

Publications (1)

Publication Number Publication Date
KR840005060A true KR840005060A (ko) 1984-11-03

Family

ID=14321076

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019830002696A Withdrawn KR840005060A (ko) 1982-06-16 1983-06-16 금속화층(金屬化層)을 갖는 sic 소결체(燒結體)와 그 제법

Country Status (5)

Country Link
US (1) US4663649A (enExample)
EP (1) EP0097058B1 (enExample)
JP (1) JPS58223678A (enExample)
KR (1) KR840005060A (enExample)
DE (1) DE3373894D1 (enExample)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59995A (ja) * 1982-06-16 1984-01-06 富士通株式会社 銅導体多層構造体の製造方法
US4784974A (en) * 1982-08-05 1988-11-15 Olin Corporation Method of making a hermetically sealed semiconductor casing
CH660176A5 (de) * 1984-07-06 1987-03-31 Bbc Brown Boveri & Cie Metall-keramik-verbundelement und verfahren zu dessen herstellung.
DE3573137D1 (en) * 1984-10-03 1989-10-26 Sumitomo Electric Industries Material for a semiconductor device and process for its manufacture
JPS61248302A (ja) * 1985-04-25 1986-11-05 株式会社日立製作所 炭化ケイ素焼結体用メタライズペ−スト
DE3784213T2 (de) * 1986-10-29 1993-06-03 Toshiba Kawasaki Kk Elektronischer apparat mit einem keramischen substrat.
US4731700A (en) * 1987-02-12 1988-03-15 Delco Electronics Corporation Semiconductor connection and crossover apparatus
US4769345A (en) * 1987-03-12 1988-09-06 Olin Corporation Process for producing a hermetically sealed package for an electrical component containing a low amount of oxygen and water vapor
US5240171A (en) * 1987-05-21 1993-08-31 Lanxide Technology Company, Lp Method for surface bonding of ceramic bodies
JP2548602B2 (ja) * 1988-04-12 1996-10-30 株式会社日立製作所 半導体実装モジュール
US5041695A (en) * 1989-06-01 1991-08-20 Westinghouse Electric Corp. Co-fired ceramic package for a power circuit
US5169805A (en) * 1990-01-29 1992-12-08 International Business Machines Corporation Method of resiliently mounting an integrated circuit chip to enable conformal heat dissipation
US5057909A (en) * 1990-01-29 1991-10-15 International Business Machines Corporation Electronic device and heat sink assembly
US5365108A (en) * 1992-11-19 1994-11-15 Sundstrand Corporation Metal matrix composite semiconductor power switch assembly
TW363262B (en) * 1995-10-31 1999-07-01 Nhk Spring Co Ltd Metallic electronic component packaging arrangement
US5929523A (en) * 1996-03-07 1999-07-27 3C Semiconductor Corporation Os rectifying Schottky and ohmic junction and W/WC/TiC ohmic contacts on SiC
US6388272B1 (en) 1996-03-07 2002-05-14 Caldus Semiconductor, Inc. W/WC/TAC ohmic and rectifying contacts on SiC
DE10040591C1 (de) * 2000-08-15 2001-11-08 Heraeus Gmbh W C Verfahren zur Herstellung einer Beschichtung auf einem feuerfesten Bauteil und deren Verwendung
US7211884B1 (en) 2002-01-28 2007-05-01 Pacesetter, Inc. Implantable medical device construction using a flexible substrate
US6919504B2 (en) * 2002-12-19 2005-07-19 3M Innovative Properties Company Flexible heat sink
US6705393B1 (en) * 2003-02-25 2004-03-16 Abc Taiwan Electronics Corp. Ceramic heat sink with micro-pores structure
US6849941B1 (en) * 2004-01-07 2005-02-01 Thermagon, Inc. Heat sink and heat spreader assembly
TWI449137B (zh) * 2006-03-23 2014-08-11 製陶技術創新製陶工程股份公司 構件或電路用的攜帶體
KR101476313B1 (ko) * 2007-04-24 2014-12-24 세람테크 게엠베하 금속화된 컴포넌트를 생성하기 위한 방법, 그에 대응하는 컴포넌트, 및 금속화 동안에 상기 컴포넌트를 지지하기 위한 기판
JP2009158725A (ja) * 2007-12-27 2009-07-16 Panasonic Corp 半導体装置およびダイボンド材
WO2009157130A1 (ja) 2008-06-23 2009-12-30 パナソニック株式会社 接合構造および電子部品
US10406774B2 (en) * 2016-10-17 2019-09-10 U.S. Department Of Energy Diffusion bonding of silicon carbide using iridium and hermetic silicon carbide-iridium bonds
JP7148276B2 (ja) * 2018-05-30 2022-10-05 京セラ株式会社 発光素子搭載用パッケージおよび発光装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA615175A (en) * 1961-02-21 J. Kroko Leonard Fused junctions in silicon carbide
NL104185C (enExample) * 1957-08-16
NL230857A (enExample) * 1958-08-26
US2937324A (en) * 1959-02-05 1960-05-17 Westinghouse Electric Corp Silicon carbide rectifier
JPS53130714A (en) * 1977-04-20 1978-11-15 Kogyo Gijutsuin Method of bonding nitride base ceramics and silver
JPS55143042A (en) * 1979-04-25 1980-11-08 Hitachi Ltd Semiconductor device
DE3064598D1 (en) * 1979-11-05 1983-09-22 Hitachi Ltd Electrically insulating substrate and a method of making such a substrate
JPS58101442A (ja) * 1981-12-11 1983-06-16 Hitachi Ltd 電気的装置用基板

Also Published As

Publication number Publication date
EP0097058A2 (en) 1983-12-28
EP0097058A3 (en) 1984-10-03
US4663649A (en) 1987-05-05
JPS6230159B2 (enExample) 1987-06-30
DE3373894D1 (en) 1987-11-05
JPS58223678A (ja) 1983-12-26
EP0097058B1 (en) 1987-09-30

Similar Documents

Publication Publication Date Title
KR840005060A (ko) 금속화층(金屬化層)을 갖는 sic 소결체(燒結體)와 그 제법
US4070518A (en) Copper metallizations
EP0098067B1 (en) Method for producing multilayered glass-ceramic structure with copper-based conductors therein
JPS60254697A (ja) 多層セラミック回路基板および製法
US4053864A (en) Thermistor with leads and method of making
EP0304309A1 (en) Thick film copper conductor inks
KR102771248B1 (ko) 금속-세라믹 기재를 제조하는 방법
US2745928A (en) Heater bodies and their production
US5147484A (en) Method for producing multi-layer ceramic substrates with oxidation resistant metalization
US2882187A (en) Electrical heating element
US6084221A (en) Aluminum nitride heater
US3337365A (en) Electrical resistance composition and method of using the same to form a resistor
US3401024A (en) Electrical contact material
JP3033852B2 (ja) 窒化アルミニウムヒータ用抵抗体及び抵抗ペースト組成物
US3717798A (en) Overlay for ohmic contact electrodes
KR102775458B1 (ko) 금속-세라믹 기재 및 노를 제조하는 방법
US3080261A (en) Bonding of lead based alloys to silicate based ceramic members
KR880002063B1 (ko) 공기 연소 가능 도체 및 저항체 잉크
US3386165A (en) Method of making cermet resistance element and terminal connections therefor
JPH11148873A (ja) Smd構成要素を具える回路配置および温度センサ製造方法
US3326645A (en) Cermet resistance element and material
JP2967929B2 (ja) 窒化アルミニウム基板用導体ペースト
EP0312824B1 (en) Ceramic structure with copper based conductors and method for forming such a structure
KR102467337B1 (ko) 금속필러가 포함된 유리페이스트를 이용한 단락저항기제조와 단락신뢰성
US5120473A (en) Metallizing composition for use with ceramics

Legal Events

Date Code Title Description
PA0109 Patent application

Patent event code: PA01091R01D

Comment text: Patent Application

Patent event date: 19830616

PG1501 Laying open of application
PC1203 Withdrawal of no request for examination
WITN Application deemed withdrawn, e.g. because no request for examination was filed or no examination fee was paid