CH660649A5 - Mosfet-anordnung. - Google Patents
Mosfet-anordnung. Download PDFInfo
- Publication number
- CH660649A5 CH660649A5 CH7696/81A CH769681A CH660649A5 CH 660649 A5 CH660649 A5 CH 660649A5 CH 7696/81 A CH7696/81 A CH 7696/81A CH 769681 A CH769681 A CH 769681A CH 660649 A5 CH660649 A5 CH 660649A5
- Authority
- CH
- Switzerland
- Prior art keywords
- regions
- polygonal
- source
- region
- gate
- Prior art date
Links
- 239000004065 semiconductor Substances 0.000 claims description 11
- 230000001427 coherent effect Effects 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims description 2
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 11
- 238000000034 method Methods 0.000 description 6
- 229920005591 polysilicon Polymers 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000002800 charge carrier Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000005468 ion implantation Methods 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/7801—DMOS transistors, i.e. MISFETs with a channel accommodating body or base region adjoining a drain drift region
- H01L29/7802—Vertical DMOS transistors, i.e. VDMOS transistors
- H01L29/7811—Vertical DMOS transistors, i.e. VDMOS transistors with an edge termination structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/06—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions
- H01L29/0684—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions characterised by the shape, relative sizes or dispositions of the semiconductor regions or junctions between the regions
- H01L29/0692—Surface layout
- H01L29/0696—Surface layout of cellular field-effect devices, e.g. multicellular DMOS transistors or IGBTs
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/06—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions
- H01L29/08—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions with semiconductor regions connected to an electrode carrying current to be rectified, amplified or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
- H01L29/0843—Source or drain regions of field-effect devices
- H01L29/0847—Source or drain regions of field-effect devices of field-effect transistors with insulated gate
- H01L29/0852—Source or drain regions of field-effect devices of field-effect transistors with insulated gate of DMOS transistors
- H01L29/0873—Drain regions
- H01L29/0878—Impurity concentration or distribution
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/06—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions
- H01L29/10—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions with semiconductor regions connected to an electrode not carrying current to be rectified, amplified or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
- H01L29/1095—Body region, i.e. base region, of DMOS transistors or IGBTs
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/7801—DMOS transistors, i.e. MISFETs with a channel accommodating body or base region adjoining a drain drift region
- H01L29/7802—Vertical DMOS transistors, i.e. VDMOS transistors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/7801—DMOS transistors, i.e. MISFETs with a channel accommodating body or base region adjoining a drain drift region
- H01L29/7802—Vertical DMOS transistors, i.e. VDMOS transistors
- H01L29/7809—Vertical DMOS transistors, i.e. VDMOS transistors having both source and drain contacts on the same surface, i.e. Up-Drain VDMOS transistors
-
- 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
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/02—Bonding areas; Manufacturing methods related thereto
- H01L2224/04—Structure, shape, material or disposition of the bonding areas prior to the connecting process
- H01L2224/06—Structure, shape, material or disposition of the bonding areas prior to the connecting process of a plurality of bonding areas
- H01L2224/0601—Structure
- H01L2224/0603—Bonding areas having different sizes, e.g. different heights or widths
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/06—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions
- H01L29/08—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions with semiconductor regions connected to an electrode carrying current to be rectified, amplified or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
- H01L29/0843—Source or drain regions of field-effect devices
- H01L29/0847—Source or drain regions of field-effect devices of field-effect transistors with insulated gate
Landscapes
- Microelectronics & Electronic Packaging (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Ceramic Engineering (AREA)
- Computer Hardware Design (AREA)
- Insulated Gate Type Field-Effect Transistor (AREA)
- Electrodes Of Semiconductors (AREA)
- Thyristors (AREA)
- Bipolar Transistors (AREA)
- Amplifiers (AREA)
- Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
- Electronic Switches (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US95131078A | 1978-10-13 | 1978-10-13 | |
| US3866279A | 1979-05-14 | 1979-05-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH660649A5 true CH660649A5 (de) | 1987-05-15 |
Family
ID=26715426
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH7696/81A CH660649A5 (de) | 1978-10-13 | 1979-10-12 | Mosfet-anordnung. |
| CH923279A CH642485A5 (de) | 1978-10-13 | 1979-10-12 | Leistungs-mosfet-anordnung. |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH923279A CH642485A5 (de) | 1978-10-13 | 1979-10-12 | Leistungs-mosfet-anordnung. |
Country Status (19)
| Country | Link |
|---|---|
| JP (2) | JP2622378B2 (ru) |
| AR (1) | AR219006A1 (ru) |
| BR (1) | BR7906338A (ru) |
| CA (2) | CA1123119A (ru) |
| CH (2) | CH660649A5 (ru) |
| CS (1) | CS222676B2 (ru) |
| DE (2) | DE2954481C2 (ru) |
| DK (3) | DK157272C (ru) |
| ES (1) | ES484652A1 (ru) |
| FR (1) | FR2438917A1 (ru) |
| GB (1) | GB2033658B (ru) |
| HU (1) | HU182506B (ru) |
| IL (1) | IL58128A (ru) |
| IT (1) | IT1193238B (ru) |
| MX (1) | MX147137A (ru) |
| NL (1) | NL175358C (ru) |
| PL (1) | PL123961B1 (ru) |
| SE (2) | SE443682B (ru) |
| SU (1) | SU1621817A3 (ru) |
Families Citing this family (47)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4593302B1 (en) * | 1980-08-18 | 1998-02-03 | Int Rectifier Corp | Process for manufacture of high power mosfet laterally distributed high carrier density beneath the gate oxide |
| DE3040775A1 (de) * | 1980-10-29 | 1982-05-13 | Siemens AG, 1000 Berlin und 8000 München | Mis-gesteuertes halbleiterbauelement |
| US4412242A (en) | 1980-11-17 | 1983-10-25 | International Rectifier Corporation | Planar structure for high voltage semiconductor devices with gaps in glassy layer over high field regions |
| GB2111745B (en) * | 1981-12-07 | 1985-06-19 | Philips Electronic Associated | Insulated-gate field-effect transistors |
| CA1188821A (en) * | 1982-09-03 | 1985-06-11 | Patrick W. Clarke | Power mosfet integrated circuit |
| US4532534A (en) * | 1982-09-07 | 1985-07-30 | Rca Corporation | MOSFET with perimeter channel |
| DE3346286A1 (de) * | 1982-12-21 | 1984-06-28 | International Rectifier Corp., Los Angeles, Calif. | Hochleistungs-metalloxid-feldeffekttransistor- halbleiterbauteil |
| JPS59167066A (ja) * | 1983-03-14 | 1984-09-20 | Nissan Motor Co Ltd | 縦形ｍｏｓｆｅｔ |
| JPS6010677A (ja) * | 1983-06-30 | 1985-01-19 | Nissan Motor Co Ltd | 縦型ｍｏｓトランジスタ |
| JPH0247874A (ja) * | 1988-08-10 | 1990-02-16 | Fuji Electric Co Ltd | Ｍｏｓ型半導体装置の製造方法 |
| US5766966A (en) * | 1996-02-09 | 1998-06-16 | International Rectifier Corporation | Power transistor device having ultra deep increased concentration region |
| IT1247293B (it) * | 1990-05-09 | 1994-12-12 | Int Rectifier Corp | Dispositivo transistore di potenza presentante una regione ultra-profonda, a maggior concentrazione |
| US5304831A (en) * | 1990-12-21 | 1994-04-19 | Siliconix Incorporated | Low on-resistance power MOS technology |
| US5404040A (en) * | 1990-12-21 | 1995-04-04 | Siliconix Incorporated | Structure and fabrication of power MOSFETs, including termination structures |
| IT1250233B (it) * | 1991-11-29 | 1995-04-03 | St Microelectronics Srl | Procedimento per la fabbricazione di circuiti integrati in tecnologia mos. |
| DE59208987D1 (de) * | 1992-08-10 | 1997-11-27 | Siemens Ag | Leistungs-MOSFET mit verbesserter Avalanche-Festigkeit |
| JPH06268227A (ja) * | 1993-03-10 | 1994-09-22 | Hitachi Ltd | 絶縁ゲート型バイポーラトランジスタ |
| US5798287A (en) * | 1993-12-24 | 1998-08-25 | Consorzio Per La Ricerca Sulla Microelettronica Nel Mezzogiorno | Method for forming a power MOS device chip |
| EP0660396B1 (en) * | 1993-12-24 | 1998-11-04 | Consorzio per la Ricerca sulla Microelettronica nel Mezzogiorno | Power MOS device chip and package assembly |
| DE69321966T2 (de) * | 1993-12-24 | 1999-06-02 | Cons Ric Microelettronica | Leistungs-Halbleiterbauelement |
| EP0665597A1 (en) * | 1994-01-27 | 1995-08-02 | Consorzio per la Ricerca sulla Microelettronica nel Mezzogiorno - CoRiMMe | IGBT and manufacturing process therefore |
| EP0689238B1 (en) * | 1994-06-23 | 2002-02-20 | STMicroelectronics S.r.l. | MOS-technology power device manufacturing process |
| US5817546A (en) * | 1994-06-23 | 1998-10-06 | Stmicroelectronics S.R.L. | Process of making a MOS-technology power device |
| DE69418037T2 (de) * | 1994-08-02 | 1999-08-26 | St Microelectronics Srl | Leistungshalbleitervorrichtung aus MOS-Technology-Chips und Gehäuseaufbau |
| US5798554A (en) * | 1995-02-24 | 1998-08-25 | Consorzio Per La Ricerca Sulla Microelettronica Nel Mezzogiorno | MOS-technology power device integrated structure and manufacturing process thereof |
| DE69534919T2 (de) * | 1995-10-30 | 2007-01-25 | Stmicroelectronics S.R.L., Agrate Brianza | Leistungsvorrichtung in MOS-Technologie mit einer einzigen kritischen Größe |
| EP0772241B1 (en) * | 1995-10-30 | 2004-06-09 | STMicroelectronics S.r.l. | High density MOS technology power device |
| US6228719B1 (en) | 1995-11-06 | 2001-05-08 | Stmicroelectronics S.R.L. | MOS technology power device with low output resistance and low capacitance, and related manufacturing process |
| DE69518653T2 (de) * | 1995-12-28 | 2001-04-19 | St Microelectronics Srl | MOS-Technologie-Leistungsanordnung in integrierter Struktur |
| EP0961325B1 (en) | 1998-05-26 | 2008-05-07 | STMicroelectronics S.r.l. | High integration density MOS technology power device |
| WO2000062345A1 (fr) | 1999-04-09 | 2000-10-19 | Shindengen Electric Manufacturing Co., Ltd. | Dispositif a semi-conducteur haute tension |
| JP4122113B2 (ja) * | 1999-06-24 | 2008-07-23 | 新電元工業株式会社 | 高破壊耐量電界効果型トランジスタ |
| US6344379B1 (en) * | 1999-10-22 | 2002-02-05 | Semiconductor Components Industries Llc | Semiconductor device with an undulating base region and method therefor |
| JP4845293B2 (ja) * | 2000-08-30 | 2011-12-28 | 新電元工業株式会社 | 電界効果トランジスタ |
| JP2006295134A (ja) | 2005-03-17 | 2006-10-26 | Sanyo Electric Co Ltd | 半導体装置およびその製造方法 |
| US9484451B2 (en) | 2007-10-05 | 2016-11-01 | Vishay-Siliconix | MOSFET active area and edge termination area charge balance |
| US9431249B2 (en) | 2011-12-01 | 2016-08-30 | Vishay-Siliconix | Edge termination for super junction MOSFET devices |
| US9614043B2 (en) | 2012-02-09 | 2017-04-04 | Vishay-Siliconix | MOSFET termination trench |
| US9842911B2 (en) | 2012-05-30 | 2017-12-12 | Vishay-Siliconix | Adaptive charge balanced edge termination |
| US10115815B2 (en) | 2012-12-28 | 2018-10-30 | Cree, Inc. | Transistor structures having a deep recessed P+ junction and methods for making same |
| US9530844B2 (en) | 2012-12-28 | 2016-12-27 | Cree, Inc. | Transistor structures having reduced electrical field at the gate oxide and methods for making same |
| JP5907097B2 (ja) * | 2013-03-18 | 2016-04-20 | 三菱電機株式会社 | 半導体装置 |
| US9508596B2 (en) | 2014-06-20 | 2016-11-29 | Vishay-Siliconix | Processes used in fabricating a metal-insulator-semiconductor field effect transistor |
| US9887259B2 (en) | 2014-06-23 | 2018-02-06 | Vishay-Siliconix | Modulated super junction power MOSFET devices |
| KR102098996B1 (ko) | 2014-08-19 | 2020-04-08 | 비쉐이-실리코닉스 | 초접합 금속 산화물 반도체 전계 효과 트랜지스터 |
| US11489069B2 (en) | 2017-12-21 | 2022-11-01 | Wolfspeed, Inc. | Vertical semiconductor device with improved ruggedness |
| US10615274B2 (en) | 2017-12-21 | 2020-04-07 | Cree, Inc. | Vertical semiconductor device with improved ruggedness |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4015278A (en) * | 1974-11-26 | 1977-03-29 | Fujitsu Ltd. | Field effect semiconductor device |
| JPS52106688A (en) * | 1976-03-05 | 1977-09-07 | Nec Corp | Field-effect transistor |
| JPS52132684A (en) * | 1976-04-29 | 1977-11-07 | Sony Corp | Insulating gate type field effect transistor |
| US4055884A (en) * | 1976-12-13 | 1977-11-01 | International Business Machines Corporation | Fabrication of power field effect transistors and the resulting structures |
| JPS5374385A (en) * | 1976-12-15 | 1978-07-01 | Hitachi Ltd | Manufacture of field effect semiconductor device |
| US4148047A (en) * | 1978-01-16 | 1979-04-03 | Honeywell Inc. | Semiconductor apparatus |
| JPH05185381A (ja) * | 1992-01-10 | 1993-07-27 | Yuum Kogyo:Kk | 替刃式鋸用ハンドル |
-
1979
- 1979-08-22 DK DK350679A patent/DK157272C/da not_active IP Right Cessation
- 1979-08-28 IL IL58128A patent/IL58128A/xx unknown
- 1979-09-25 AR AR278193A patent/AR219006A1/es active
- 1979-09-28 CS CS796589A patent/CS222676B2/cs unknown
- 1979-09-28 MX MX179453A patent/MX147137A/es unknown
- 1979-10-02 BR BR7906338A patent/BR7906338A/pt not_active IP Right Cessation
- 1979-10-02 ES ES484652A patent/ES484652A1/es not_active Expired
- 1979-10-08 DE DE19792954481 patent/DE2954481C2/de not_active Expired - Lifetime
- 1979-10-08 DE DE2940699A patent/DE2940699C2/de not_active Expired
- 1979-10-09 GB GB7935059A patent/GB2033658B/en not_active Expired
- 1979-10-09 NL NLAANVRAGE7907472,A patent/NL175358C/xx not_active IP Right Cessation
- 1979-10-09 FR FR7925070A patent/FR2438917A1/fr active Granted
- 1979-10-09 CA CA337,182A patent/CA1123119A/en not_active Expired
- 1979-10-11 HU HU79IE891A patent/HU182506B/hu not_active IP Right Cessation
- 1979-10-11 IT IT26435/79A patent/IT1193238B/it active
- 1979-10-11 SU SU792835965A patent/SU1621817A3/ru active
- 1979-10-11 PL PL1979218878A patent/PL123961B1/pl unknown
- 1979-10-12 SE SE7908479A patent/SE443682B/sv not_active IP Right Cessation
- 1979-10-12 CH CH7696/81A patent/CH660649A5/de not_active IP Right Cessation
- 1979-10-12 CH CH923279A patent/CH642485A5/de not_active IP Right Cessation
-
1981
- 1981-11-12 CA CA000389973A patent/CA1136291A/en not_active Expired
-
1985
- 1985-07-26 SE SE8503615A patent/SE465444B/sv not_active IP Right Cessation
-
1987
- 1987-04-28 JP JP62106158A patent/JP2622378B2/ja not_active Expired - Lifetime
-
1988
- 1988-09-15 DK DK512388A patent/DK512388D0/da not_active Application Discontinuation
- 1988-09-15 DK DK512488A patent/DK512488D0/da not_active Application Discontinuation
-
1994
- 1994-10-12 JP JP6246144A patent/JP2643095B2/ja not_active Expired - Lifetime
Also Published As
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