Patent US3477691A successfully refreshed from Google Patents.
Patent US3245839A successfully refreshed from Google Patents.
US3245839A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electro-chemical generator
Assignee: FMC Corp
•
Filing: 1963-02-21
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Granted: 1966-04-12
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Expires: 1983-02-21
Abstract
No abstract record available.
Inventors
- 👤 Charles M Rosser
- 👤 Richard A Glinski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:01
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/40; H01M50/409; H01M50/411; H01M50/429; H01M50/414; H01M50/423; H01M50/449; H01M50/451; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
AN ELECTRO-CHEMICAL GENERATOR COMPRISING A POSITIVE ELECTRODE, A NEGATIVE ELECTRODE, ELECTROLYTE, AND A SEMIPERMEABLE CELLULOSIC SEPARATOR MEMBRANE IMPREGNATED WITH COLLODIAL METAL SELECTED FROM THE GROUP CONSISTING OF SILVER AND GOLD.
Claim 2
Dependent Claim
30 words
AN ELECTRO-CHEMICAL GENERATOR COMPRISING A POSITIVE ELECTRODE, A NEGATIVE ELECTRODE, ELECTROLYTE, AND A SEMIPERMEABLE CELLULOSIC SEPARATOR MEMBRANE IMPREGNATED WITH COLLODIAL METAL SELECTED FROM THE GROUP CONSISTING OF SILVER AND GOLD.
References Cited (Backward Citations)
US2574533A
Cited
US3013099A
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US2956100A
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US2876186A
Cited
US3075907A
Cited
US3022367A
Cited
US3091554A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |