US2859266A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkaline dry cell
Assignee: Duracell Inc USA
•
Filing: 1955-05-31
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Granted: 1958-11-04
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Expires: 1975-05-31
Abstract
No abstract record available.
Inventors
- 👤 Bruce J Garvey
- 👤 Schaef Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:35
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/04; H01M6/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
114 words
AN ALKALINE DRY CELL COMPRISING A TWO-PART CONTAINER ONE OF SAID PARTS CONTAINING AN ANODE AND A SEPARATOR CONTAINING AN ELECTROLYTE, THE OTHER OF SAID PARTS CONTAINING A CATHODE-DEPOLARIZER, ONE OF SAID PARST HAVING AN OUTWARDLY EXTENDING SHOULDER, SAID DEPOLARIZER AND SAID ELECTROLYTE HAVING OPPOSED SURFACES, A POROUS BARRIER DISC INTERPOSED BETWEEN THE OPPOSED SURFACES OF SAID ELECTROLYTE AND SAID DEPOLARIZER, SAID DISC HAVING PERIPHERAL EDGE PORTIONS EXTENDING BEYOND SAID SURFACES, SAID DISC BEING CEMEMTED TO SAID DEPOLARIZER BY AN ADHESIVE THAT IS PERMEABLE TO THE ELECTROLYTE, THE EDGES OF SAID DISC OVERLYING SAID OUTWARDLY EXTENDING SHOULDER ON ONE OF SAID PARTS AND BEING CLAMPED AGAINST SAID SHOULDER BY THE OTHER OF SAID PARTS.
References Cited (Backward Citations)
US2536696A
Cited
US2576266A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-03 | 1962-05-05 | 1962-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-03 | 1966-05-05 | 1966-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-03 | 1970-05-05 | 1970-11-04 | $7700.00 | Window Closed / Lapsed |