US2724011A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Storage battery separator and method of production
Assignee: Exide Technologies LLC
•
Filing: 1951-12-03
•
Granted: 1955-11-15
•
Expires: 1971-12-03
Abstract
No abstract record available.
Inventors
- 👤 Howard J Strauss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:20
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/40; H01M50/409; H01M50/411; H01M50/414; H01M50/417; H01M50/429; H01M50/489; H01M50/491; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
20 words
A STORAGE BATTERY SEPARATOR COMPRISINGA A MICROPOROUS SYNTHETIC RESIN MATRIX, AND A CELLULOSIC FILLER MATERIAL DEPOSITED IN THE PORES THEREOF.
Claim 2
Dependent Claim
20 words
A STORAGE BATTERY SEPARATOR COMPRISINGA A MICROPOROUS SYNTHETIC RESIN MATRIX, AND A CELLULOSIC FILLER MATERIAL DEPOSITED IN THE PORES THEREOF.
References Cited (Backward Citations)
US1393467A
Cited
US1514548A
Cited
US1500220A
Cited
US1463864A
Cited
US2077412A
Cited
US1977221A
Cited
US2542527A
Cited
US2478186A
Cited
US2543137A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-14 | 1959-05-16 | 1959-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-14 | 1963-05-16 | 1963-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-14 | 1967-05-16 | 1967-11-15 | $7700.00 | Window Closed / Lapsed |