US2501673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Powdered zinc anode for primary cells
Assignee: United States, WAR, Secretary of
•
Filing: 1945-12-04
•
Granted: 1950-03-28
•
Expires: 1965-12-04
Abstract
No abstract record available.
Inventors
- 👤 Glassner Alvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:13
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
AN IMPROVED ZINC ANODE FOR PRIMARY CELLS HAVING AN ALKALINE ELECTROLYTE AND A DEPOLARIZING ELECTRODE FORMED OF AN OXIDIZING AGENT, SAID ZINC ANODE COMPRISING AN ELECTROLYTE-ABSORBING SHEET OF A MIXTURE OF COHERING PARTICLES OF POWDERED ZINC AND PARTICLES OF POROUS, ELECTRICALLY NON-CONDUCTING MINERAL MATERIAL, SAID SHEET FORMED INTO A SPIRALLY WOUND BODY.
Claim 2
Dependent Claim
52 words
AN IMPROVED ZINC ANODE FOR PRIMARY CELLS HAVING AN ALKALINE ELECTROLYTE AND A DEPOLARIZING ELECTRODE FORMED OF AN OXIDIZING AGENT, SAID ZINC ANODE COMPRISING AN ELECTROLYTE-ABSORBING SHEET OF A MIXTURE OF COHERING PARTICLES OF POWDERED ZINC AND PARTICLES OF POROUS, ELECTRICALLY NON-CONDUCTING MINERAL MATERIAL, SAID SHEET FORMED INTO A SPIRALLY WOUND BODY.
References Cited (Backward Citations)
US413438A
Cited
US546739A
Cited
GB271496A
Cited
US2307627A
Cited
FR862859A
Cited
US2463316A
Cited
US2422045A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-27 | 1953-09-26 | 1954-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-27 | 1957-09-26 | 1958-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-27 | 1961-09-26 | 1962-03-28 | $7700.00 | Window Closed / Lapsed |