AU547173B2 - Band gap of amorphous alloys and devices - Google Patents

Band gap of amorphous alloys and devices

Info

Publication number
AU547173B2
AU547173B2 AU75019/81A AU7501981A AU547173B2 AU 547173 B2 AU547173 B2 AU 547173B2 AU 75019/81 A AU75019/81 A AU 75019/81A AU 7501981 A AU7501981 A AU 7501981A AU 547173 B2 AU547173 B2 AU 547173B2
Authority
AU
Australia
Prior art keywords
devices
band gap
amorphous alloys
alloys
amorphous
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.)
Expired
Application number
AU75019/81A
Other languages
English (en)
Other versions
AU7501981A (en
Inventor
David Adler
Stanford Robert Ovshinsky
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Energy Conversion Devices Inc
Original Assignee
Energy Conversion Devices Inc
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
Priority claimed from US06/185,520 external-priority patent/US4342044A/en
Application filed by Energy Conversion Devices Inc filed Critical Energy Conversion Devices Inc
Publication of AU7501981A publication Critical patent/AU7501981A/en
Application granted granted Critical
Publication of AU547173B2 publication Critical patent/AU547173B2/en
Anticipated expiration legal-status Critical
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
    • C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
    • C23C16/455—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for introducing gases into reaction chamber or for modifying gas flows in reaction chamber
    • C23C16/45523—Pulsed gas flow or change of composition over time
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/0021—Reactive sputtering or evaporation
    • C23C14/0026—Activation or excitation of reactive gases outside the coating chamber
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
    • C23C14/24—Vacuum evaporation
    • C23C14/32—Vacuum evaporation by explosion; by evaporation and subsequent ionisation of the vapours, e.g. ion-plating
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
    • C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
    • 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
    • H01L29/12—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
    • H01L29/16—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed including, apart from doping materials or other impurities, only elements of Group IV of the Periodic Table
    • H01L29/1604—Amorphous materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/06—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices characterised by potential barriers
    • H01L31/065—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices characterised by potential barriers the potential barriers being only of the graded gap type
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
    • H01L31/20—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof such devices or parts thereof comprising amorphous semiconductor materials
    • H01L31/202—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof such devices or parts thereof comprising amorphous semiconductor materials including only elements of Group IV of the Periodic Table
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
    • H01L31/20—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof such devices or parts thereof comprising amorphous semiconductor materials
    • H01L31/202—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof such devices or parts thereof comprising amorphous semiconductor materials including only elements of Group IV of the Periodic Table
    • H01L31/204—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof such devices or parts thereof comprising amorphous semiconductor materials including only elements of Group IV of the Periodic Table including AIVBIV alloys, e.g. SiGe, SiC
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/547—Monocrystalline silicon PV cells
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electromagnetism (AREA)
  • Manufacturing & Machinery (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Photovoltaic Devices (AREA)
  • Silicon Compounds (AREA)
  • Chemical Vapour Deposition (AREA)
  • Photoreceptors In Electrophotography (AREA)
AU75019/81A 1980-09-09 1981-09-08 Band gap of amorphous alloys and devices Expired AU547173B2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US185520 1980-09-09
US06/185,520 US4342044A (en) 1978-03-08 1980-09-09 Method for optimizing photoresponsive amorphous alloys and devices
US20657980A 1980-11-13 1980-11-13
US206579 1994-03-04

Publications (2)

Publication Number Publication Date
AU7501981A AU7501981A (en) 1982-03-18
AU547173B2 true AU547173B2 (en) 1985-10-10

Family

ID=26881211

Family Applications (1)

Application Number Title Priority Date Filing Date
AU75019/81A Expired AU547173B2 (en) 1980-09-09 1981-09-08 Band gap of amorphous alloys and devices

Country Status (14)

Country Link
KR (1) KR890000478B1 (sv)
AU (1) AU547173B2 (sv)
BR (1) BR8105747A (sv)
CA (1) CA1192819A (sv)
DE (1) DE3135411C2 (sv)
ES (1) ES8302361A1 (sv)
FR (1) FR2490018B1 (sv)
GB (1) GB2083701B (sv)
IE (1) IE52207B1 (sv)
IL (1) IL63754A (sv)
IN (1) IN157458B (sv)
IT (1) IT1138202B (sv)
NL (1) NL8104140A (sv)
SE (1) SE455554B (sv)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU588400B2 (en) * 1980-12-03 1989-09-14 Kanegafuchi Kagaku Kogyo Kabushiki Kaisha High-voltage photovoltaic cell having a hetero junction of amorphous semiconductor and amorphous silicon

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4523214A (en) * 1981-07-03 1985-06-11 Fuji Photo Film Co., Ltd. Solid state image pickup device utilizing microcrystalline and amorphous silicon
EP0094426B1 (en) * 1981-11-20 1987-08-05 Chronar Corporation Bandgap control in amorphous semiconductors
US4460670A (en) * 1981-11-26 1984-07-17 Canon Kabushiki Kaisha Photoconductive member with α-Si and C, N or O and dopant
US4460669A (en) * 1981-11-26 1984-07-17 Canon Kabushiki Kaisha Photoconductive member with α-Si and C, U or D and dopant
US4465750A (en) * 1981-12-22 1984-08-14 Canon Kabushiki Kaisha Photoconductive member with a -Si having two layer regions
JPS5914679A (ja) * 1982-07-16 1984-01-25 Toshiba Corp 光起電力装置
JPS59111152A (ja) * 1982-12-16 1984-06-27 Sharp Corp 電子写真用感光体
US4547621A (en) * 1984-06-25 1985-10-15 Sovonics Solar Systems Stable photovoltaic devices and method of producing same
DE8430810U1 (de) * 1984-10-19 1986-05-07 Siemens AG, 1000 Berlin und 8000 München Solarzelle mit graduellem Energiebandabstand mit einem aus amorphem Silizium bestehenden Halbleiterkorper
JPS61104678A (ja) * 1984-10-29 1986-05-22 Mitsubishi Electric Corp アモルフアス太陽電池
CA1269164A (en) * 1986-03-24 1990-05-15 Metin Aktik Photosensitive diode with hydrogenated amorphous silicon layer
FR2630260B1 (fr) * 1988-04-19 1991-11-29 Thomson Csf Photodetecteur en silicium amorphe a rendement quantique ameliore
DE19700697A1 (de) * 1997-01-13 1998-07-16 Goeller Christian Verfahren zur Herstellung von Solarzellen
US6437233B1 (en) * 2000-07-25 2002-08-20 Trw Inc. Solar cell having multi-quantum well layers transitioning from small to large band gaps and method of manufacture therefor
EP1919264A1 (en) 2006-11-02 2008-05-07 Dow Corning Corporation Device for forming a film by deposition from a plasma
EP1923483A1 (en) 2006-11-02 2008-05-21 Dow Corning Corporation Deposition of amorphous silicon films by electron cyclotron resonance
EP1918414A1 (en) 2006-11-02 2008-05-07 Dow Corning Corporation Film deposition of amorphous films with a graded bandgap by electron cyclotron resonance
EP1918966A1 (en) 2006-11-02 2008-05-07 Dow Corning Corporation Method for forming a film with a graded bandgap by deposition of an amorphous material from a plasma
EP1918967B1 (en) 2006-11-02 2013-12-25 Dow Corning Corporation Method of forming a film by deposition from a plasma
EP1918965A1 (en) 2006-11-02 2008-05-07 Dow Corning Corporation Method and apparatus for forming a film by deposition from a plasma

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1123525A (en) * 1977-10-12 1982-05-11 Stanford R. Ovshinsky High temperature amorphous semiconductor member and method of making same
US4342044A (en) * 1978-03-08 1982-07-27 Energy Conversion Devices, Inc. Method for optimizing photoresponsive amorphous alloys and devices
US4217374A (en) * 1978-03-08 1980-08-12 Energy Conversion Devices, Inc. Amorphous semiconductors equivalent to crystalline semiconductors
US4226898A (en) * 1978-03-16 1980-10-07 Energy Conversion Devices, Inc. Amorphous semiconductors equivalent to crystalline semiconductors produced by a glow discharge process
JPS5513938A (en) 1978-07-17 1980-01-31 Shunpei Yamazaki Photoelectronic conversion semiconductor device and its manufacturing method
JPS5513939A (en) 1978-07-17 1980-01-31 Shunpei Yamazaki Photoelectronic conversion semiconductor device
DE2950008A1 (de) * 1979-12-12 1981-06-19 Siemens AG, 1000 Berlin und 8000 München Dauermagneterregter laeufer fuer eine synchronmaschine
FR2490019B1 (fr) * 1980-09-09 1985-10-31 Energy Conversion Devices Inc Procede et dispositif pour augmenter l'intervalle de bandes d'alliages amorphes photosensibles et alliages obtenus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU588400B2 (en) * 1980-12-03 1989-09-14 Kanegafuchi Kagaku Kogyo Kabushiki Kaisha High-voltage photovoltaic cell having a hetero junction of amorphous semiconductor and amorphous silicon

Also Published As

Publication number Publication date
FR2490018B1 (fr) 1986-01-17
NL8104140A (nl) 1982-04-01
KR890000478B1 (ko) 1989-03-18
SE8105277L (sv) 1982-03-10
DE3135411C2 (de) 1994-07-07
ES505268A0 (es) 1982-12-16
IN157458B (sv) 1986-04-05
ES8302361A1 (es) 1982-12-16
IL63754A (en) 1984-07-31
DE3135411A1 (de) 1982-09-23
BR8105747A (pt) 1982-05-25
AU7501981A (en) 1982-03-18
IT8123825A0 (it) 1981-09-07
IE812063L (en) 1982-03-09
IT1138202B (it) 1986-09-17
KR830008406A (ko) 1983-11-18
IL63754A0 (en) 1981-12-31
IE52207B1 (en) 1987-08-05
SE455554B (sv) 1988-07-18
FR2490018A1 (fr) 1982-03-12
GB2083701A (en) 1982-03-24
CA1192819A (en) 1985-09-03
GB2083701B (en) 1985-09-04

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MK14 Patent ceased section 143(a) (annual fees not paid) or expired