DE69003152D1 - Verfahren und Vorrichtung zur kontinuierlichen Herstellung von mit fibrilliertem Polymer gebundenen Elektrodenkomponenten. - Google Patents
Verfahren und Vorrichtung zur kontinuierlichen Herstellung von mit fibrilliertem Polymer gebundenen Elektrodenkomponenten.Info
- Publication number
- DE69003152D1 DE69003152D1 DE90105552T DE69003152T DE69003152D1 DE 69003152 D1 DE69003152 D1 DE 69003152D1 DE 90105552 T DE90105552 T DE 90105552T DE 69003152 T DE69003152 T DE 69003152T DE 69003152 D1 DE69003152 D1 DE 69003152D1
- Authority
- DE
- Germany
- Prior art keywords
- continuous production
- electrode components
- components bound
- fibrillated polymer
- fibrillated
- 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 - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/88—Processes of manufacture
- H01M4/8875—Methods for shaping the electrode into free-standing bodies, like sheets, films or grids, e.g. moulding, hot-pressing, casting without support, extrusion without support
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/285—Feeding the extrusion material to the extruder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/285—Feeding the extrusion material to the extruder
- B29C48/297—Feeding the extrusion material to the extruder at several locations, e.g. using several hoppers or using a separate additive feeding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/355—Conveyors for extruded articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/375—Plasticisers, homogenisers or feeders comprising two or more stages
- B29C48/39—Plasticisers, homogenisers or feeders comprising two or more stages a first extruder feeding the melt into an intermediate location of a second extruder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/565—Screws having projections other than the thread, e.g. pins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/68—Barrels or cylinders
- B29C48/685—Barrels or cylinders characterised by their inner surfaces, e.g. having grooves, projections or threads
- B29C48/687—Barrels or cylinders characterised by their inner surfaces, e.g. having grooves, projections or threads having projections with a short length in the barrel direction, e.g. pins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
- H01M4/0402—Methods of deposition of the material
- H01M4/0404—Methods of deposition of the material by coating on electrode collectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
- H01M4/043—Processes of manufacture in general involving compressing or compaction
- H01M4/0435—Rolling or calendering
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/8663—Selection of inactive substances as ingredients for catalytic active masses, e.g. binders, fillers
- H01M4/8668—Binders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/285—Feeding the extrusion material to the extruder
- B29C48/29—Feeding the extrusion material to the extruder in liquid form
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/0005—Condition, form or state of moulded material or of the material to be shaped containing compounding ingredients
-
- 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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- 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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
- Y10S264/47—Processes of splitting film, webs or sheets
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Battery Electrode And Active Subsutance (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/341,564 US4976904A (en) | 1989-04-20 | 1989-04-20 | Method and apparatus for continuous formation of fibrillated polymer binder electrode component |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69003152D1 true DE69003152D1 (de) | 1993-10-14 |
DE69003152T2 DE69003152T2 (de) | 1994-04-14 |
Family
ID=23338108
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE90105552T Expired - Fee Related DE69003152T2 (de) | 1989-04-20 | 1990-03-23 | Verfahren und Vorrichtung zur kontinuierlichen Herstellung von mit fibrilliertem Polymer gebundenen Elektrodenkomponenten. |
Country Status (4)
Country | Link |
---|---|
US (1) | US4976904A (de) |
EP (1) | EP0393379B1 (de) |
BR (1) | BR9001385A (de) |
DE (1) | DE69003152T2 (de) |
Families Citing this family (34)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5165941A (en) * | 1989-09-05 | 1992-11-24 | Composite Products, Inc. | Extruder apparatus and process for compounding thermoplastic resin and fibres |
DE4128630C1 (de) * | 1991-08-29 | 1992-07-23 | Hermann Berstorff Maschinenbau Gmbh, 3000 Hannover, De | |
US5316556A (en) * | 1993-03-30 | 1994-05-31 | Valence Technology, Inc. | Apparatus and method for extruding shear thinning material |
US5401154A (en) * | 1993-05-26 | 1995-03-28 | Continental Structural Plastics, Inc. | Apparatus for compounding a fiber reinforced thermoplastic material and forming parts therefrom |
WO1995019052A1 (en) * | 1994-01-07 | 1995-07-13 | Valence Technology, Inc. | Continuous screw mixing and extruding of an electrode paste |
DE4438169A1 (de) * | 1994-10-26 | 1996-05-02 | Battenfeld Extrusionstech | Schneckenextruder |
DE19542721A1 (de) * | 1995-11-16 | 1997-05-22 | Sgl Technik Gmbh | Verfahren zur Herstellen von Formkörpern aus Kunststoff-Füllstoff-Mischungen mit einem hohen Gehalt an Füllstoffen |
US5863676A (en) * | 1997-03-27 | 1999-01-26 | Energy Research Corporation | Calcium-zincate electrode for alkaline batteries and method for making same |
NL1006913C2 (nl) * | 1997-09-02 | 1999-03-04 | Dsm Nv | Werkwijze voor de bereiding van een polymeersamenstelling. |
JP4092444B2 (ja) * | 1997-12-04 | 2008-05-28 | ミサワホーム株式会社 | 成形品製造方法および成形品製造用混練装置 |
US6277314B1 (en) | 1998-02-04 | 2001-08-21 | Flextech Packaging, Ltd. | System and method for producing polymeric film |
US6511217B1 (en) * | 2000-11-03 | 2003-01-28 | General Electric Company | Method and system to compound silicone compositions |
US6589299B2 (en) * | 2001-02-13 | 2003-07-08 | 3M Innovative Properties Company | Method for making electrode |
AU2003206599A1 (en) * | 2002-03-07 | 2003-09-16 | Avestor Limited Partnership | Positive electrode films for alkali metal polymer batteries and method for making same |
US6939383B2 (en) * | 2002-05-03 | 2005-09-06 | 3M Innovative Properties Company | Method for making electrode |
DE10242694A1 (de) * | 2002-09-13 | 2004-03-25 | MAX-PLANCK-Gesellschaft zur Förderung der Wissenschaften e.V. | Neuartige Elektrodenmaterialien und Elektroden für elektrochemische Energiespeichereinrichtungen auf Li-Basis |
US20040119194A1 (en) * | 2002-12-24 | 2004-06-24 | Boyko Aladjov | Method for making electrodes for electrochemical cells |
US7238446B2 (en) * | 2002-12-24 | 2007-07-03 | Ovonic Battery Company, Inc. | Active electrode composition with conductive polymeric binder |
EP1648671A1 (de) * | 2003-07-29 | 2006-04-26 | Basell Polyolefine GmbH | Verfahren zum granulieren von thermoplastischen polymer pulvern unter verbesserten wirtschaftlichen bedingungen |
JP5079329B2 (ja) * | 2003-08-01 | 2012-11-21 | バシウム・カナダ・インコーポレーテッド | ポリマー電池のための正極材料及びその製造方法 |
US7641833B2 (en) * | 2004-04-15 | 2010-01-05 | Polyplastics Co., Ltd. | Method for producing a pellet from a fiber-filled resin composition and injection-molded products thereof |
HUP0501204A2 (en) * | 2005-12-23 | 2007-07-30 | Thales Rt | Ozone generating electrolytic cell |
KR101386162B1 (ko) * | 2006-07-21 | 2014-04-18 | 삼성에스디아이 주식회사 | 연료전지용 전극 및 이를 채용한 연료전지 |
US8449931B2 (en) * | 2006-08-28 | 2013-05-28 | Michael Dubrovsky | Chewing gum composition |
EP2167228B1 (de) * | 2007-05-09 | 2015-07-08 | California Institute of Technology | Lithiumfluorpolymer und fluororganische batterien |
WO2009024167A1 (en) * | 2007-08-20 | 2009-02-26 | Pirelli Tyre S.P.A. | Process and apparatus for continuously producing an elastomeric composition |
CH700976A1 (de) | 2009-05-11 | 2010-11-15 | Buss Ag | Misch- und Knetmaschine für kontinuierliche Aufbereitungsprozesse sowie Verfahren zur Durchführung von kontinuierlichen Aufbereitungsprozessen mittels einer Misch- und Knetmaschine. |
CN101844377B (zh) * | 2010-05-14 | 2017-02-01 | 周焕民 | 一种导电母粒的制备方法 |
US8807825B2 (en) * | 2010-08-16 | 2014-08-19 | B&P Process Equipment And Systems, Llc | Gear box with variably coupled oscillation and rotation for kneading machine |
DE102011012771B4 (de) | 2011-03-01 | 2020-08-06 | Ika-Werke Gmbh & Co. Kg | Verfahren und Vorrichtung zum Herstellen einer Mischung zum Beschichten von Batterie-Elektroden |
JP2013243088A (ja) * | 2012-05-22 | 2013-12-05 | Jtekt Corp | 電極製造システム |
HUE051927T2 (hu) | 2014-03-10 | 2021-04-28 | Maxwell Lab | Eljárás és berendezések polimerfibrillálásra elektromos térben |
DE102016217404A1 (de) | 2016-09-13 | 2018-03-15 | Robert Bosch Gmbh | Verfahren zur Herstellung eines Elektrodenfilms |
DE102017209960A1 (de) | 2017-06-13 | 2018-12-13 | Robert Bosch Gmbh | Verfahren zum Herstellen einer Elektrode, insbesondere für eine Batterie |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3389201A (en) * | 1964-07-30 | 1968-06-18 | Du Pont | Paste extrusion of polytetrafluoroethylene by prebaking of the coagulated dispersionresin |
US3317956A (en) * | 1964-12-22 | 1967-05-09 | Hedwin Corp | Mixing device for extruding apparatus |
CH454432A (de) * | 1966-08-22 | 1968-04-15 | List Heinz | Apparat zur thermischen Behandlung von plastischen Stoffen |
CH450696A (de) * | 1967-06-13 | 1968-01-31 | Buss Ag | Misch- und Kneteinrichtung |
CH536184A (de) * | 1971-03-17 | 1973-04-30 | Sig Schweiz Industrieges | Einstellbare Drosselvorrichtung an Doppelschneckenpresse |
US4124747A (en) * | 1974-06-04 | 1978-11-07 | Exxon Research & Engineering Co. | Conductive polyolefin sheet element |
SE7514664L (sv) * | 1975-12-29 | 1977-06-30 | Tudor Ab | Framstellning av blystoft for rorelektroder |
JPS53142630A (en) * | 1977-05-18 | 1978-12-12 | Sanyo Electric Co | Method of manufacturing cadmium electrode for alkaline battery |
DE2749101A1 (de) * | 1977-10-27 | 1979-05-03 | Ludwig Wittrock | Vorrichtung zum spritzen und spritzgiessen plastifizierbarer massen, insbesondere schmelzfaehiger kunststoffe |
US4223080A (en) * | 1979-05-11 | 1980-09-16 | Bell Telephone Laboratories, Incorporated | Cell and fuel cell electrodes having poly(phosphazene) binder |
US4379772A (en) * | 1980-10-31 | 1983-04-12 | Diamond Shamrock Corporation | Method for forming an electrode active layer or sheet |
US4320185A (en) * | 1981-01-19 | 1982-03-16 | Mpd Technology Corporation | Production of a cell electrode system |
US4396693A (en) * | 1981-01-19 | 1983-08-02 | Mpd Technology Corporation | Production of a cell electrode system |
US4320184A (en) * | 1981-01-19 | 1982-03-16 | Mpd Technology Corporation | Production of a cell electrode system |
DE3275070D1 (de) * | 1982-08-26 | 1987-02-19 | Berstorff Gmbh Masch Hermann | Extruder with vent zone |
JPS59167240A (ja) * | 1983-03-14 | 1984-09-20 | Chisso Corp | 有機フイラ−を配合された熱可塑性樹脂組成物の成形物の製法及びそのための装置 |
US4556618A (en) * | 1983-12-01 | 1985-12-03 | Allied Corporation | Battery electrode and method of making |
FR2574803B1 (fr) * | 1984-12-18 | 1987-01-30 | Occidental Chem Co | Materiau thermoplastique conducteur de l'electricite et procede de fabrication d'un tel materiau |
US4731310A (en) * | 1986-08-15 | 1988-03-15 | W. R. Grace & Co. | Cathodic electrode |
US4735875A (en) * | 1986-03-24 | 1988-04-05 | W. R. Grace & Co. | Cathodic electrode |
-
1989
- 1989-04-20 US US07/341,564 patent/US4976904A/en not_active Expired - Lifetime
-
1990
- 1990-03-23 EP EP90105552A patent/EP0393379B1/de not_active Expired - Lifetime
- 1990-03-23 DE DE90105552T patent/DE69003152T2/de not_active Expired - Fee Related
- 1990-03-27 BR BR909001385A patent/BR9001385A/pt not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
EP0393379A1 (de) | 1990-10-24 |
DE69003152T2 (de) | 1994-04-14 |
US4976904A (en) | 1990-12-11 |
EP0393379B1 (de) | 1993-09-08 |
BR9001385A (pt) | 1991-04-09 |
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