US2886620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for making positive battery plates
Assignee: Individual
•
Filing: 1954-07-12
•
Granted: 1959-05-12
•
Expires: 1974-07-12
Abstract
No abstract record available.
Inventors
- 👤 Edward L Barrett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:53
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/04; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
THE METHOD OF PRODUCING A BATTERY PLATE HAVING A BI-VALENT OXIDE OF A NOBLE METAL AS THE ACTIVE MATERIAL WHICH INCLUDES ELECTROLYTICALLY OXIDIZING A BASE OF POROUS SPONGY NOBLE METAL BY SUPPORTING THE BASE IN A STATIONARY POSITION WHILE SETTING UP VIBRATIONS IN THE ELECTROLYTE OVER SUBSTANTIALLY THE ENTIRE PLATE AREA WHICH HAVE A FRE-
Claim 2
Independent Claim
55 words
THE METHOD OF PRODUCING A BATTERY PLATE HAVING A BI-VALENT OXIDE OF A NOBLE METAL AS THE ACTIVE MATERIAL WHICH INCLUDES ELECTROLYTICALLY OXIDIZING A BASE OF POROUS SPONGY NOBLE METAL BY SUPPORTING THE BASE IN A STATIONARY POSITION WHILE SETTING UP VIBRATIONS IN THE ELECTROLYTE OVER SUBSTANTIALLY THE ENTIRE PLATE AREA WHICH HAVE A FRE-
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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) | 1962-05-11 | 1962-11-10 | 1963-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-11 | 1966-11-10 | 1967-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-11 | 1970-11-10 | 1971-05-12 | $7700.00 | Window Closed / Lapsed |