Patent US3549423A successfully refreshed from Google Patents.
US3549423A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for manufacturing foam type electrode
Assignee: General Electric Co
•
Filing: 1967-06-30
•
Granted: 1970-12-22
•
Expires: 1987-06-30
Abstract
No abstract record available.
Inventors
- 👤 Willard T Grubb
- 👤 Lawrence H King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:52
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49108; Y10T29/49112; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12153; Y10T428/12479; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T428/24331; Y10T428/249921; Y10T428/249953; Y10T428/249962
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2928891A
Cited
US3150011A
Cited
US3060254A
Cited
US3158510A
Cited
US3432355A
Cited
US3274031A
Cited
US3287166A
Cited
US3266893A
Cited
US3311508A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-21 | 1974-06-22 | 1974-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-21 | 1978-06-22 | 1978-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-21 | 1982-06-22 | 1982-12-22 | $7700.00 | Window Closed / Lapsed |