US3018316A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Battery separators and method for producing the same
Assignee: New York University
•
Filing: 1957-12-23
•
Granted: 1962-01-23
•
Expires: 1977-12-23
Abstract
No abstract record available.
Inventors
- 👤 Thomas W Higgins
- 👤 Capsuto Leon
- 👤 Paul F Bruins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:21
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/40; H01M50/409; H01M50/411; H01M50/414; H01M50/42; H01M50/423; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
A COMPOSITION OF MATTER COMPRISING A ZINC BASE AND A FILM THEREON, SAID FILM COMPRISING AHYDROPHILIC, SUBSTANTIALLY ISOLUBLE, PARTIALLY CROSS-LINKED POLYACRYLAMIDE GEL.
Claim 2
Dependent Claim
22 words
A COMPOSITION OF MATTER COMPRISING A ZINC BASE AND A FILM THEREON, SAID FILM COMPRISING AHYDROPHILIC, SUBSTANTIALLY ISOLUBLE, PARTIALLY CROSS-LINKED POLYACRYLAMIDE GEL.
References Cited (Backward Citations)
US1139213A
Cited
US1824626A
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US2173005A
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US2229431A
Cited
GB505354A
Cited
US2534336A
Cited
US2551799A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-22 | 1965-07-24 | 1966-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-22 | 1969-07-24 | 1970-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-22 | 1973-07-24 | 1974-01-23 | $7700.00 | Window Closed / Lapsed |