Patent US2987567A successfully refreshed from Google Patents.
US2987567A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dry-charged negative electrode
Assignee: Exide Technologies LLC
•
Filing: 1957-06-25
•
Granted: 1961-06-06
•
Expires: 1977-06-25
Abstract
No abstract record available.
Inventors
- 👤 Clark R Freas
- 👤 William J Schlotter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:50
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/24; H01M4/244; H01M4/64; H01M4/70; H01M4/75; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A NEGATIVE ELECTRODE CHARACTERIZED BY THE ABSENCE THEREFROM OF ELECTROLYTE FOR DRY-CHARGED ALKALINE BATTERIES COMPRISING A PERFORATED ZINC PLATE, ELECTROCHEMICALLY ACTIVE ZINC IN CURRENT-CARRYING RELATION WITH SAID ZINC PLATE, A CURRENT-CARRYING GRID IMBEDDED IN SAID METALLIC ZINC, AT LEAST ONE LAYER OF ZINC OXIDE IN FACE-TO-FACE RELATION WITH SAID METALLIC ZINC AND IN ELECTRICAL CURRENT-CARRYING RELATION THEREWITH, AND AN ELECTROLYTE-PERVIOUS SHEET MATERIAL DISPOSED AGAINST THE OPPOSITE FACES OF THE ELECTRODE.
Claim 2
Dependent Claim
70 words
A NEGATIVE ELECTRODE CHARACTERIZED BY THE ABSENCE THEREFROM OF ELECTROLYTE FOR DRY-CHARGED ALKALINE BATTERIES COMPRISING A PERFORATED ZINC PLATE, ELECTROCHEMICALLY ACTIVE ZINC IN CURRENT-CARRYING RELATION WITH SAID ZINC PLATE, A CURRENT-CARRYING GRID IMBEDDED IN SAID METALLIC ZINC, AT LEAST ONE LAYER OF ZINC OXIDE IN FACE-TO-FACE RELATION WITH SAID METALLIC ZINC AND IN ELECTRICAL CURRENT-CARRYING RELATION THEREWITH, AND AN ELECTROLYTE-PERVIOUS SHEET MATERIAL DISPOSED AGAINST THE OPPOSITE FACES OF THE ELECTRODE.
References Cited (Backward Citations)
US1366490A
Cited
US2571927A
Cited
US2600526A
Cited
US2669595A
Cited
US2640864A
Cited
US2830108A
Cited
US2838590A
Cited
US2739179A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-05 | 1964-12-05 | 1965-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-05 | 1968-12-05 | 1969-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-05 | 1972-12-05 | 1973-06-06 | $7700.00 | Window Closed / Lapsed |