US2677008A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Storage battery separator
Assignee: Willard Storage Battery Co
•
Filing: 1949-09-15
•
Granted: 1954-04-27
•
Expires: 1969-09-15
Abstract
No abstract record available.
Inventors
- 👤 Fairclough Edward
- 👤 Clarence C Rose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:23
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/40; H01M50/409; H01M50/44; H01M50/411; H01M50/429; H01M50/4295; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y10; Y10T; Y10T428/00; Y10T428/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A STORGE BATTERY PLATE SEPARATOR COMPRISING FILAMENTARY RESIN IN A BAT-LIKE SHEET AT LEAST .025 INCH THICK AND HAVING THE MAJORITY OF THE FILAMENTS OF RESIN EXTENDING GENERALLY PARALLEL TO ONE ANOTHER, FILMS OR MEMBRANES OF LIKE RESIN CONNECTING OR JOINING PORTIONS OF SAID FILAMENTS AND FORMING THEREWITH A MICROPOROUS RELATIVELY RIGID SHEET RESISTANT TO SOFTENING BY AND INERT TO BATTERY ELECTROLYTE, SAID RESIN FILLAMENTS HAVING CORES OF CELLULOSE FIBERS, THE RESIN COMPRISING APPROXIMATELY 50% TO 60% BY WEIGHT OF THE SHEET AND SAID SHEET HAVING A DENSITY OF APPROXIMATELY .15 TO .2 GRAM PER SQUARE INCH.
Claim 2
Dependent Claim
97 words
A STORGE BATTERY PLATE SEPARATOR COMPRISING FILAMENTARY RESIN IN A BAT-LIKE SHEET AT LEAST .025 INCH THICK AND HAVING THE MAJORITY OF THE FILAMENTS OF RESIN EXTENDING GENERALLY PARALLEL TO ONE ANOTHER, FILMS OR MEMBRANES OF LIKE RESIN CONNECTING OR JOINING PORTIONS OF SAID FILAMENTS AND FORMING THEREWITH A MICROPOROUS RELATIVELY RIGID SHEET RESISTANT TO SOFTENING BY AND INERT TO BATTERY ELECTROLYTE, SAID RESIN FILLAMENTS HAVING CORES OF CELLULOSE FIBERS, THE RESIN COMPRISING APPROXIMATELY 50% TO 60% BY WEIGHT OF THE SHEET AND SAID SHEET HAVING A DENSITY OF APPROXIMATELY .15 TO .2 GRAM PER SQUARE INCH.
References Cited (Backward Citations)
US649003A
Cited
US1500220A
Cited
US1744256A
Cited
US2161383A
Cited
US2306781A
Cited
US2416232A
Cited
US2531504A
Cited
US2441523A
Cited
US2474801A
Cited
US2492124A
Cited
US2540996A
Cited
US2566960A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-26 | 1957-10-26 | 1958-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-26 | 1961-10-26 | 1962-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-26 | 1965-10-26 | 1966-04-27 | $7700.00 | Window Closed / Lapsed |