US2653985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Battery plate separator
Assignee: Owens Corning
•
Filing: 1949-12-28
•
Granted: 1953-09-29
•
Expires: 1969-12-28
Abstract
No abstract record available.
Inventors
- 👤 Thomas E Philipps
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:56
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/40; H01M50/409; H01M50/449; H01M50/489; H01M50/491; H01M2300/00; H01M2300/0002; H01M2300/0005; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A COMBINED SEPARATOR AND RETAINER FOR STORAGE BATTERIES COMPRISING A MAT OF GLASS FIBERS MECHANICALLY BOUND AT THEIR JUNCTURES BY A RESIN AND AN ADHESIVE MICROPOROUS COMPOSITION PROVIDING A CONTINUOUS, NON-IMPREGNATING COVER ON AT LEAST ONE SIDE OF THE MAT, SAID COMPOSITION COMPRISING DIATOMACEOUS EARTH PARTICLES AND UNVULCANIZED BUTADIENE STYRENE PARTICLES WHICH WERE POLYMERIZED APPROXIMATELY IN THE MOLAR RATIO OF 2:3, RESPECTIVELY.
Claim 2
Dependent Claim
62 words
A COMBINED SEPARATOR AND RETAINER FOR STORAGE BATTERIES COMPRISING A MAT OF GLASS FIBERS MECHANICALLY BOUND AT THEIR JUNCTURES BY A RESIN AND AN ADHESIVE MICROPOROUS COMPOSITION PROVIDING A CONTINUOUS, NON-IMPREGNATING COVER ON AT LEAST ONE SIDE OF THE MAT, SAID COMPOSITION COMPRISING DIATOMACEOUS EARTH PARTICLES AND UNVULCANIZED BUTADIENE STYRENE PARTICLES WHICH WERE POLYMERIZED APPROXIMATELY IN THE MOLAR RATIO OF 2:3, RESPECTIVELY.
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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) | 1956-09-28 | 1957-03-30 | 1957-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-28 | 1961-03-30 | 1961-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-28 | 1965-03-30 | 1965-09-29 | $7700.00 | Window Closed / Lapsed |