PT72131A - Novel fluorinated copolymer and preparation thereof - Google Patents
Novel fluorinated copolymer and preparation thereofInfo
- Publication number
- PT72131A PT72131A PT72131A PT7213180A PT72131A PT 72131 A PT72131 A PT 72131A PT 72131 A PT72131 A PT 72131A PT 7213180 A PT7213180 A PT 7213180A PT 72131 A PT72131 A PT 72131A
- Authority
- PT
- Portugal
- Prior art keywords
- membrane
- acid groups
- novel
- fluorinated
- carboxylic acid
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D327/00—Heterocyclic compounds containing rings having oxygen and sulfur atoms as the only ring hetero atoms
- C07D327/02—Heterocyclic compounds containing rings having oxygen and sulfur atoms as the only ring hetero atoms one oxygen atom and one sulfur atom
- C07D327/04—Five-membered rings
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C309/00—Sulfonic acids; Halides, esters, or anhydrides thereof
- C07C309/78—Halides of sulfonic acids
- C07C309/79—Halides of sulfonic acids having halosulfonyl groups bound to acyclic carbon atoms
- C07C309/82—Halides of sulfonic acids having halosulfonyl groups bound to acyclic carbon atoms of a carbon skeleton substituted by singly-bound oxygen atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C309/00—Sulfonic acids; Halides, esters, or anhydrides thereof
- C07C309/78—Halides of sulfonic acids
- C07C309/79—Halides of sulfonic acids having halosulfonyl groups bound to acyclic carbon atoms
- C07C309/84—Halides of sulfonic acids having halosulfonyl groups bound to acyclic carbon atoms of a carbon skeleton substituted by carboxyl groups
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C317/00—Sulfones; Sulfoxides
- C07C317/16—Sulfones; Sulfoxides having sulfone or sulfoxide groups and singly-bound oxygen atoms bound to the same carbon skeleton
- C07C317/18—Sulfones; Sulfoxides having sulfone or sulfoxide groups and singly-bound oxygen atoms bound to the same carbon skeleton with sulfone or sulfoxide groups bound to acyclic carbon atoms of the carbon skeleton
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C323/00—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups
- C07C323/10—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and singly-bound oxygen atoms bound to the same carbon skeleton
- C07C323/11—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and singly-bound oxygen atoms bound to the same carbon skeleton having the sulfur atoms of the thio groups bound to acyclic carbon atoms of the carbon skeleton
- C07C323/12—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and singly-bound oxygen atoms bound to the same carbon skeleton having the sulfur atoms of the thio groups bound to acyclic carbon atoms of the carbon skeleton the carbon skeleton being acyclic and saturated
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F214/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen
- C08F214/18—Monomers containing fluorine
- C08F214/184—Monomers containing fluorine with fluorinated vinyl ethers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F214/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen
- C08F214/18—Monomers containing fluorine
- C08F214/26—Tetrafluoroethene
- C08F214/262—Tetrafluoroethene with fluorinated vinyl ethers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F216/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical
- C08F216/12—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical by an ether radical
- C08F216/14—Monomers containing only one unsaturated aliphatic radical
- C08F216/1466—Monomers containing sulfur
- C08F216/1475—Monomers containing sulfur and oxygen
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F8/00—Chemical modification by after-treatment
- C08F8/04—Reduction, e.g. hydrogenation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F8/00—Chemical modification by after-treatment
- C08F8/12—Hydrolysis
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/20—Manufacture of shaped structures of ion-exchange resins
- C08J5/22—Films, membranes or diaphragms
- C08J5/2206—Films, membranes or diaphragms based on organic and/or inorganic macromolecular compounds
- C08J5/2218—Synthetic macromolecular compounds
- C08J5/2231—Synthetic macromolecular compounds based on macromolecular compounds obtained by reactions involving unsaturated carbon-to-carbon bonds
- C08J5/2237—Synthetic macromolecular compounds based on macromolecular compounds obtained by reactions involving unsaturated carbon-to-carbon bonds containing fluorine
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2327/12—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Health & Medical Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6788979A JPS55160007A (en) | 1979-05-31 | 1979-05-31 | Novel fluorinated copolymer and production thereof |
JP54067888A JPS6045653B2 (ja) | 1979-05-31 | 1979-05-31 | 新規なフツ素化陽イオン交換膜及びその製造方法 |
JP54085852A JPS5910658B2 (ja) | 1979-07-09 | 1979-07-09 | 新規なフツ素化ビニルエ−テル化合物及びその製法 |
JP9030279A JPS5616460A (en) | 1979-07-18 | 1979-07-18 | Novel fluorinated carboxylic acid derivative and its preparation |
JP9030179A JPS5912116B2 (ja) | 1979-07-18 | 1979-07-18 | 新規なフッ素化酸フッ化物及びその製造方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
PT72131A true PT72131A (en) | 1980-12-01 |
PT72131B PT72131B (en) | 1981-09-24 |
Family
ID=27524071
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PT72131A PT72131B (en) | 1979-05-31 | 1980-11-28 | Novel fluorinated copolymer and preparation thereof |
Country Status (12)
Country | Link |
---|---|
US (4) | US4329434A (pt) |
BR (1) | BR8003432A (pt) |
CA (2) | CA1185398A (pt) |
DE (4) | DE3050439C2 (pt) |
FI (1) | FI72530C (pt) |
FR (4) | FR2457880B1 (pt) |
IN (1) | IN154418B (pt) |
IT (1) | IT1193942B (pt) |
NL (1) | NL184740C (pt) |
NO (1) | NO153398C (pt) |
PT (1) | PT72131B (pt) |
SE (1) | SE449999B (pt) |
Families Citing this family (41)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4329435A (en) | 1979-05-31 | 1982-05-11 | Asahi Kasei Kogyo Kabushiki Kaisha | Novel fluorinated copolymer with tridihydro fluorosulfonyl fluoride pendant groups and preparation thereof |
DE3050931C2 (de) * | 1979-05-31 | 1994-06-09 | Asahi Chemical Ind | Fluorierte Carbonsäure-Derivate und Verfahren zu ihrer Herstellung |
US4786442A (en) * | 1980-04-03 | 1988-11-22 | E. I. Du Pont De Nemours And Company | Alkyl perfluoro(2-methyl-5-oxo-3-oxahexanoate) |
JPS5792028A (en) * | 1980-11-29 | 1982-06-08 | Asahi Chem Ind Co Ltd | Fluorocarbon cation exchange membrane |
US4399009A (en) * | 1981-01-19 | 1983-08-16 | Oronzio Denora Impianti Elettrochimici S.P.A. | Electrolytic cell and method |
JPS58199884A (ja) * | 1982-05-18 | 1983-11-21 | Asahi Glass Co Ltd | 改良された電解用陽イオン交換膜 |
US4766248A (en) * | 1982-07-19 | 1988-08-23 | E. I. Du Pont De Nemours And Company | β-substituted polyfluoroethyl compounds |
US4590015A (en) * | 1983-12-27 | 1986-05-20 | E. I. Du Pont De Nemours And Company | Fluorinated polyether carboxylic acid fluorides |
US4675453A (en) * | 1983-12-27 | 1987-06-23 | E. I. Du Pont De Nemours And Company | Process and intermediates for fluorinated vinyl ether monomer |
US4556747A (en) * | 1983-12-27 | 1985-12-03 | E. I. Du Pont De Nemours And Company | Fluorinated vinyl ethers, copolymers thereof, and precursors thereto |
US4474899A (en) * | 1983-12-27 | 1984-10-02 | E. I. Du Pont De Nemours And Company | Process for preparing ester fluorinated ion exchange polymer precursor by acid treatment of ether |
US4526948A (en) * | 1983-12-27 | 1985-07-02 | E. I. Du Pont De Nemours And Company | Fluorinated vinyl ethers, copolymers thereof, and precursors thereto |
EP0155173B1 (en) * | 1984-03-12 | 1989-10-18 | Tokuyama Soda Kabushiki Kaisha | Process for preparation of fluorine-containing polymer films |
DE3650465T2 (de) * | 1985-02-09 | 1996-09-12 | Asahi Chemical Ind | Durchlässige Polymer-Membran für die Gastrocknung |
US4604323A (en) * | 1985-02-22 | 1986-08-05 | E. I. Du Pont De Nemours And Company | Multilayer cation exchange membrane |
DE3768388D1 (de) * | 1986-09-19 | 1991-04-11 | Ausimont Spa | Verfahren zur herstellung von perfluoracylfluoriden. |
DE3707367A1 (de) * | 1987-03-07 | 1988-09-15 | Hoechst Ag | Umsetzung von hexafluorpropenoxid mit fluorierten carbonsaeurefluoriden |
US4940525A (en) * | 1987-05-08 | 1990-07-10 | The Dow Chemical Company | Low equivalent weight sulfonic fluoropolymers |
US5006624A (en) * | 1987-05-14 | 1991-04-09 | The Dow Chemical Company | Fluorocarbon containing, reactive polymeric surfactants and coating compositions therefrom |
AU608913B2 (en) * | 1987-09-17 | 1991-04-18 | Commonwealth Scientific And Industrial Research Organisation | Neutralized perfluoro-3,6-dioxa-4-methyl-7-octene sulphonyl fluoride copolymer surface for attachment and growth of animal cells |
US5880241A (en) * | 1995-01-24 | 1999-03-09 | E. I. Du Pont De Nemours And Company | Olefin polymers |
US5536754A (en) * | 1995-02-15 | 1996-07-16 | E. I. Du Pont De Nemours And Company | Fluorinated ion-exchange polymers and intermediates therefor |
US5830962A (en) * | 1995-02-15 | 1998-11-03 | E. I. Du Pont De Nemours And Company | Fluorinated ion-exchange polymers and intermediates therefor |
US5475143A (en) * | 1995-02-15 | 1995-12-12 | E. I. Du Pont De Nemours And Company | Fluorinated ion-exchange polymers and intermediates therefor |
GB2302693B (en) * | 1995-06-26 | 1999-03-10 | Tokuyama Corp | Fluorine-containing resin molded articles |
US5782472A (en) * | 1995-09-25 | 1998-07-21 | Steven R. Pyykkonen | Device for combining a game of chance and craps |
US5871461A (en) * | 1996-07-12 | 1999-02-16 | Empi, Inc. | Method of making an iontophoresis electrode |
WO1998002207A1 (en) * | 1996-07-12 | 1998-01-22 | Empi, Inc. | Iontophoresis electrode |
US6285816B1 (en) * | 1999-04-13 | 2001-09-04 | Wisconsin Alumni Research Foundation | Waveguide |
DE10159191B4 (de) * | 2001-11-29 | 2006-05-11 | Leibniz-Institut Für Polymerforschung Dresden E.V. | Modifizierte Hohlfasermembranmaterialien und Verfahren zu ihrer Modifizierung |
WO2003104293A1 (es) * | 2002-06-07 | 2003-12-18 | David Fuel Cell Components, S.L. | Método de obtención de polímeros perfluorosulfonados que contienen grupos funcionales sulfonilo |
US6624328B1 (en) | 2002-12-17 | 2003-09-23 | 3M Innovative Properties Company | Preparation of perfluorinated vinyl ethers having a sulfonyl fluoride end-group |
US7348088B2 (en) * | 2002-12-19 | 2008-03-25 | 3M Innovative Properties Company | Polymer electrolyte membrane |
ITMI20030444A1 (it) * | 2003-03-11 | 2004-09-12 | Solvay Solexis Spa | Processo per preparare (per)fluoroalogenoeteri. |
EP1642890B1 (en) | 2003-07-04 | 2010-09-29 | Asahi Glass Company Ltd. | Process for production of fluorinated sulfonyl fluorides |
AU2013330344B2 (en) | 2012-09-17 | 2018-07-05 | W. R. Grace & Co.-Conn. | Chromatography media and devices |
CA2919820C (en) | 2013-07-31 | 2022-07-19 | Council Of Scientific & Industrial Research | Anion exchange membrane for electrodialysis applications and process for the preparation thereof |
JP6914189B2 (ja) | 2014-05-02 | 2021-08-04 | ダブリュー・アール・グレース・アンド・カンパニー−コーンW R Grace & Co−Conn | 官能化担体材料並びに官能化担体材料を作製及び使用する方法 |
EP3302784B1 (en) | 2015-06-05 | 2021-10-06 | W.R. Grace & Co.-Conn. | Adsorbent bioprocessing clarification agents and methods of making and using the same |
US10756373B2 (en) * | 2017-12-22 | 2020-08-25 | Chinbay Q. Fan | Fuel cell system and method of providing surfactant fuel bubbles |
WO2021050529A1 (en) | 2019-09-09 | 2021-03-18 | Compact Membrane Systems, Inc. | Gas permeable fluoropolymers and ionomers |
Family Cites Families (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3062879A (en) * | 1961-05-15 | 1962-11-06 | Du Pont | Process for preparing perfluoroalkanedioic acids |
US3624053A (en) * | 1963-06-24 | 1971-11-30 | Du Pont | Trifluorovinyl sulfonic acid polymers |
US3301893A (en) * | 1963-08-05 | 1967-01-31 | Du Pont | Fluorocarbon ethers containing sulfonyl groups |
US3282875A (en) * | 1964-07-22 | 1966-11-01 | Du Pont | Fluorocarbon vinyl ether polymers |
GB1034197A (en) * | 1963-09-13 | 1966-06-29 | Du Pont | Sulphonic acid derivatives of fluorocarbon vinyl ethers, and polymers thereof |
US3437686A (en) * | 1966-03-07 | 1969-04-08 | Ashland Oil Inc | Perfluorinated thiodiglycolic acid and derivatives thereof |
CA1026038A (en) * | 1973-06-14 | 1978-02-07 | Foster Grant Co. | Styrene-acrylonitrile grafted polybutadiene polymeric composition having high impact at low rubber levels |
US4178218A (en) * | 1974-03-07 | 1979-12-11 | Asahi Kasei Kogyo Kabushiki Kaisha | Cation exchange membrane and use thereof in the electrolysis of sodium chloride |
JPS551351B2 (pt) * | 1974-03-07 | 1980-01-12 | ||
JPS5177241A (ja) | 1974-12-11 | 1976-07-05 | Hiroo Nakamoto | Denshishashinyofukushasochi |
IT1061477B (it) * | 1975-07-09 | 1983-02-28 | Asahi Chemical Ind | Membrana scambiatrice di cationi sua preparazione e suo impiego |
JPS5224177A (en) * | 1975-07-09 | 1977-02-23 | Asahi Chem Ind Co Ltd | Manufacturing method of fluorocarbon cathion exchange membrane |
US4151053A (en) * | 1975-07-09 | 1979-04-24 | Asahi Kasei Kogyo Kabushiki Kaisha | Cation exchange membrane preparation and use thereof |
JPS5224176A (en) * | 1975-07-09 | 1977-02-23 | Asahi Chem Ind Co Ltd | Cathion exchange membrane |
JPS5223192A (en) * | 1975-08-15 | 1977-02-21 | Asahi Glass Co Ltd | Preparation of improved fluoropolymer bearing cation exchange groups |
JPS5228588A (en) * | 1975-08-29 | 1977-03-03 | Asahi Glass Co Ltd | Method for manufacturing an improved fluoropolymer having cation excha nge groups |
GB1518387A (en) * | 1975-08-29 | 1978-07-19 | Asahi Glass Co Ltd | Fluorinated cation exchange membrane and use thereof in electrolysis of an alkali metal halide |
JPS5833249B2 (ja) | 1975-09-19 | 1983-07-19 | 旭硝子株式会社 | 含フツ素陽イオン交換樹脂膜 |
BG23472A1 (pt) | 1975-12-05 | 1977-09-15 | ||
JPS5284191A (en) * | 1975-12-30 | 1977-07-13 | Asahi Glass Co Ltd | Improved f-contg. cation exchange resin membrane |
NO145235C (no) * | 1976-08-06 | 1982-02-10 | Montedison Spa | Oxafluoralkansyrer eller sulfonsyrederivater for anvendelse som reaktanter ved dannelse av ionebytterharpikser |
JPS5349090A (en) * | 1976-10-15 | 1978-05-04 | Asahi Glass Co Ltd | Preparation of fluorinated plymer containing ion exchange group |
JPS5359842U (pt) * | 1976-10-25 | 1978-05-22 | ||
FR2388013B1 (fr) * | 1977-04-20 | 1985-08-02 | Du Pont | Polymeres fluores echangeurs d'ions contenant des groupes carboxyliques, leur preparation et leur utilisation dans des cellules d'electrolyse chlore-alcali |
FR2388012A1 (fr) * | 1977-04-20 | 1978-11-17 | Du Pont | Polymere fluore echangeur d'ions contenant des groupes carboxyliques et pellicules et membranes constituees de ce polymere |
US4176215A (en) * | 1978-03-13 | 1979-11-27 | E. I. Du Pont De Nemours And Company | Ion-exchange structures of copolymer blends useful in electrolytic cells |
-
1980
- 1980-05-23 US US06/152,847 patent/US4329434A/en not_active Expired - Lifetime
- 1980-05-24 DE DE3050439A patent/DE3050439C2/de not_active Expired
- 1980-05-24 DE DE3046501A patent/DE3046501C2/de not_active Expired
- 1980-05-24 DE DE19803020057 patent/DE3020057A1/de active Granted
- 1980-05-24 DE DE3050782A patent/DE3050782C2/de not_active Expired
- 1980-05-26 CA CA000352671A patent/CA1185398A/en not_active Expired
- 1980-05-27 SE SE8003901A patent/SE449999B/sv not_active IP Right Cessation
- 1980-05-28 FI FI801733A patent/FI72530C/fi not_active IP Right Cessation
- 1980-05-30 BR BR8003432A patent/BR8003432A/pt not_active IP Right Cessation
- 1980-05-30 IT IT22468/80A patent/IT1193942B/it active
- 1980-05-30 NO NO801637A patent/NO153398C/no unknown
- 1980-05-30 NL NLAANVRAGE8003174,A patent/NL184740C/xx not_active IP Right Cessation
- 1980-06-02 FR FR8012213A patent/FR2457880B1/fr not_active Expired
- 1980-11-21 FR FR8024747A patent/FR2473533B1/fr not_active Expired
- 1980-11-28 PT PT72131A patent/PT72131B/pt unknown
- 1980-12-01 IN IN1334/CAL/80A patent/IN154418B/en unknown
-
1981
- 1981-06-30 FR FR8112845A patent/FR2483431B1/fr not_active Expired
- 1981-09-03 US US06/299,164 patent/US4510328A/en not_active Expired - Lifetime
- 1981-11-18 FR FR8121580A patent/FR2508039B1/fr not_active Expired
-
1983
- 1983-07-08 CA CA000432138A patent/CA1168263A/en not_active Expired
- 1983-08-29 US US06/527,425 patent/US4555369A/en not_active Expired - Lifetime
- 1983-08-29 US US06/527,426 patent/US4597913A/en not_active Expired - Lifetime
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