US3515542A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making dispersion-strengthened ductile materials
Assignee: Duracell Inc USA
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Filing: 1967-01-27
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Granted: 1970-06-02
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Expires: 1987-01-27
Abstract
No abstract record available.
Inventors
- 👤 Earl I Larsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:52
CPC Classifications
H; H01; H01H; H01H1/00; H01H1/02; H01H1/021; H01H1/023; C; C22; C22C; C22C1/00; C22C1/02; C22C1/10; C22C1/1036; H01H33/00; H01H33/70; H01H33/76; H01H33/765
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2311750A
Cited
US2793949A
Cited
US3189444A
Cited
US3205099A
Cited
US3180727A
Cited
US3364016A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-01 | 1973-12-01 | 1974-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-01 | 1977-12-01 | 1978-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-01 | 1981-12-01 | 1982-06-02 | $7700.00 | Window Closed / Lapsed |