Patent US4369103A successfully refreshed from Google Patents.
US4369103A
Expired / Lapsed
US
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Solid polymer electrolyte cell
Assignee: PPG Industries Inc
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Filing: 1981-08-14
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Granted: 1983-01-18
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Expires: 2001-08-14
Abstract
Abstract Disclosed is method of preparing a solid polymer electrolyte by depositing catalyst particles in hydrophilic, thermoplastic ion exchange material on the solid polymer electrolyte permionic membrane or a current collector-catalyst carrier. Also disclosed is the solid polymer electrolyte electrolytic cell prepared thereby.
Inventors
- 👤 Preston S. White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:55
CPC Classifications
C; C25; C25B; C25B9/00; C25B9/17; C25B9/19; C25B9/23
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
In an electrolytic cell divided into two electrolyte compartments by a permionic membrane, said electrolytic cell having an electrode pair of anodic electrocatalyst in contact with one surface of the permionic membrane and cathodic electrocatalyst in contact with the opposite surface thereof, the improvement wherein at least one member of said electrode pair comprises electrocatalyst particles adherent to the permionic membrane, said electrocatalyst particles being rendered adherent to the permionic membrane when a surface of the permionic membrane is in a thermoplastic form chosen from the group consisting of low alkyl esters of carboxylic acid resins, acid halides of carboxylic acid resins, and acid halides of sulfonic acid resins.
Claim 2
Dependent Claim
109 words
In an electrolytic cell divided into two electrolyte compartments by a permionic membrane, said electrolytic cell having an electrode pair of anodic electrocatalyst in contact with one surface of the permionic membrane and cathodic electrocatalyst in contact with the opposite surface thereof, the improvement wherein at least one member of said electrode pair comprises electrocatalyst particles adherent to the permionic membrane, said electrocatalyst particles being rendered adherent to the permionic membrane when a surface of the permionic membrane is in a thermoplastic form chosen from the group consisting of low alkyl esters of carboxylic acid resins, acid halides of carboxylic acid resins, and acid halides of sulfonic acid resins.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-01-17 | 1986-07-19 | 1987-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-17 | 1990-07-19 | 1991-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-17 | 1994-07-19 | 1995-01-18 | $7700.00 | Window Closed / Lapsed |