US2866840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyelectrolytes in battery pastes
Assignee: Eagle Picher Co
•
Filing: 1954-04-05
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Granted: 1958-12-30
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Expires: 1974-04-05
Abstract
No abstract record available.
Inventors
- 👤 John F Dittmann
- 👤 Earl B Cupp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:29
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/48; H01M4/56; H01M4/57; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
A LEAD OXIDE MIXTURE ADAPTED TO FORM A COHESIVE PASTE WITH WATER FOR USE IN THE PREPARATION OF LEAD-ACID BATTERY PLATES, COMPRISING LEADY LITHARGE CONTAINING 5 TO 30% FREE LEAD AND .1 TO 1% SODIUM POLYMETHACRYLATE
Claim 2
Dependent Claim
36 words
A LEAD OXIDE MIXTURE ADAPTED TO FORM A COHESIVE PASTE WITH WATER FOR USE IN THE PREPARATION OF LEAD-ACID BATTERY PLATES, COMPRISING LEADY LITHARGE CONTAINING 5 TO 30% FREE LEAD AND .1 TO 1% SODIUM POLYMETHACRYLATE
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) | 1961-12-29 | 1962-06-30 | 1962-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-29 | 1966-06-30 | 1966-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-29 | 1970-06-30 | 1970-12-30 | $7700.00 | Window Closed / Lapsed |