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US2562215A
Expired / Lapsed
US
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Primary cell
Assignee: Individual
•
Filing: 1943-06-24
•
Granted: 1951-07-31
•
Expires: 1963-06-24
Abstract
No abstract record available.
Inventors
- 👤 Ruben Samuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:18
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/06; H01M6/00; H01M6/04; H01M6/06; H01M4/64; H01M4/70; H01M4/78
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
AN ALKALINE DRY CELL STRUCTURE COMPRISING METAL CUP HAVING A DEPOLARIZING OXIDE CATHODE COMPOSITION COMPRESSED IN THE BOTTOM THEREOF, AN INERT RIGID BARRIER DISC HAVING A MICROSCOPIC RANDOM POROSITY TIGHTLY FITTED WITHIN SAID CUP OVER SAID OXIDE, AN ANODE IN SAID CUP FORMED OF A ROLL OF METAL FOIL AND POROUS SHEET SPACER ENROLLED THEREWITH AND SEPARATING THE TURNS THEREOF WITH THE SHEET SPACER EXTENDING FROM THE LOWER END OF SAID ROLL INTO CONTACT WITH SAID BARRIER DISC, AND AN ALKALINE ELECTROLYTE IN SAID SHEET SPACER AND SAID BARRIER DISC AND IN CONTACT WITH SAID ELECTRODES.
Claim 2
Dependent Claim
96 words
AN ALKALINE DRY CELL STRUCTURE COMPRISING METAL CUP HAVING A DEPOLARIZING OXIDE CATHODE COMPOSITION COMPRESSED IN THE BOTTOM THEREOF, AN INERT RIGID BARRIER DISC HAVING A MICROSCOPIC RANDOM POROSITY TIGHTLY FITTED WITHIN SAID CUP OVER SAID OXIDE, AN ANODE IN SAID CUP FORMED OF A ROLL OF METAL FOIL AND POROUS SHEET SPACER ENROLLED THEREWITH AND SEPARATING THE TURNS THEREOF WITH THE SHEET SPACER EXTENDING FROM THE LOWER END OF SAID ROLL INTO CONTACT WITH SAID BARRIER DISC, AND AN ALKALINE ELECTROLYTE IN SAID SHEET SPACER AND SAID BARRIER DISC AND IN CONTACT WITH SAID ELECTRODES.
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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) | 1954-07-30 | 1955-01-29 | 1955-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-30 | 1959-01-29 | 1959-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-30 | 1963-01-29 | 1963-07-31 | $7700.00 | Window Closed / Lapsed |