US2829189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkaline dry cell
Assignee: Burgess Battery Co
•
Filing: 1956-08-24
•
Granted: 1958-04-01
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Expires: 1976-08-24
Abstract
No abstract record available.
Inventors
- 👤 Joseph J Coleman
- 👤 Paul G Kort
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:48
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/04; H01M6/06; H01M50/00; H01M50/50; H01M50/543; H01M50/552; H01M50/559; H01M50/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
A DRY CELL, AN AMALGAMATED ZINC ANODE, A READILYREDUCIBLE OXYGEN-YIELDING DEPOLARIZATING CATHODE AN AN ALKALINE ELECTROLYTE CONTAINING ALUMINUM OXIDE IN AN AMOUNT FROM ABOUT 0.0043 TO ABOUT 0.086 PER 100
Claim 2
Dependent Claim
30 words
A DRY CELL, AN AMALGAMATED ZINC ANODE, A READILYREDUCIBLE OXYGEN-YIELDING DEPOLARIZATING CATHODE AN AN ALKALINE ELECTROLYTE CONTAINING ALUMINUM OXIDE IN AN AMOUNT FROM ABOUT 0.0043 TO ABOUT 0.086 PER 100
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) | 1961-03-31 | 1961-09-30 | 1962-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-31 | 1965-09-30 | 1966-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-31 | 1969-09-30 | 1970-04-01 | $7700.00 | Window Closed / Lapsed |