Patent US3799772A successfully refreshed from Google Patents.
US3799772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silver-cadmium oxide type material
Assignee: Duracell Inc USA
•
Filing: 1972-02-04
•
Granted: 1974-03-26
•
Expires: 1992-02-04
Abstract
Abstract IMPROVED PROPERTIES INCLUDING REDUCED ARC EROSION RATE ARE OBTAINED IN SILVER-CADMIUM OXIDE MATERIALS BY ADDING AT LEAST ONE ADDITIVE SELECTED FROM THE GROUP CONSISTING OF NIOBIUM AND MANGANESE METALS IN AN AMOUNT FROM 0.001 UP TO 5%, AND OPTIONALLY TIN.
Inventors
- 👤 E Zdanuk
- 👤 T Zdanuk
- 👤 R Krock
- 👤 Shen Yuan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:13
CPC Classifications
H; H01; H01H; H01H1/00; H01H1/02; H01H1/021; H01H1/023; H01H1/0237; H01H1/02372; H01H1/02374; C; C22; C22C; C22C5/00; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/929
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-25 | 1977-09-24 | 1978-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-25 | 1981-09-24 | 1982-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-25 | 1985-09-24 | 1986-03-26 | $7700.00 | Window Closed / Lapsed |