US3026366A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separators for electric storage batteries
Assignee: WR Grace and Co
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Filing: 1960-05-02
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Granted: 1962-03-20
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Expires: 1980-05-02
Abstract
No abstract record available.
Inventors
- 👤 Jr Ernest J Comeau
- 👤 Joseph P Dankese
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:20
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/40; H01M50/409; H01M50/44; H01M50/411; H01M50/414; H01M50/417; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A SEPARATOR FOR ELECTRIC STORAGE BATTERIES WHICH INCLUDES A PLURALITY OF NON-POROUS, SEPARATELY FORMED RIBS ADHESIVELY SECURED TO THE FACE OF THE SEPARATOR, AND RIBS BEING COMPOSED OF AN INTIMATELY MILLED MIXTURE OF A RESINOUS COMPONENT WHICH CONTAINS FROM ABOUT 30 PERCENT TO ABOUT 90 PERCENT OF POLYETHYLENE AND FROM ABOUT 70 PERCENT TO ABOUT 10 PERCENT OF A RUBBERY POLYMER SELECTED FROM THE CLASS CONSISTING OF POLYISOBUTYLENE AND BUTYL RUBBER, TOGETHER WITH FROM ABOUT 150 PERCENT TO ABOUT 300 PERCENT BASED ON THE WEIGHT OF THE RESINOUS COMPONENT, OF AN ANHYDROUS FINELY DIVIDED FILLER SELECTED FROM THE CLASS CONSISTING OF CALCIUM SULFATE AND BARIUM SULFATE.
Claim 2
Dependent Claim
106 words
A SEPARATOR FOR ELECTRIC STORAGE BATTERIES WHICH INCLUDES A PLURALITY OF NON-POROUS, SEPARATELY FORMED RIBS ADHESIVELY SECURED TO THE FACE OF THE SEPARATOR, AND RIBS BEING COMPOSED OF AN INTIMATELY MILLED MIXTURE OF A RESINOUS COMPONENT WHICH CONTAINS FROM ABOUT 30 PERCENT TO ABOUT 90 PERCENT OF POLYETHYLENE AND FROM ABOUT 70 PERCENT TO ABOUT 10 PERCENT OF A RUBBERY POLYMER SELECTED FROM THE CLASS CONSISTING OF POLYISOBUTYLENE AND BUTYL RUBBER, TOGETHER WITH FROM ABOUT 150 PERCENT TO ABOUT 300 PERCENT BASED ON THE WEIGHT OF THE RESINOUS COMPONENT, OF AN ANHYDROUS FINELY DIVIDED FILLER SELECTED FROM THE CLASS CONSISTING OF CALCIUM SULFATE AND BARIUM SULFATE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-19 | 1965-09-18 | 1966-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-19 | 1969-09-18 | 1970-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-19 | 1973-09-18 | 1974-03-20 | $7700.00 | Window Closed / Lapsed |