US3532560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cold-working process
Assignee: Kobe Steel Ltd
•
Filing: 1967-10-20
•
Granted: 1970-10-06
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Expires: 1987-10-20
Abstract
No abstract record available.
Inventors
- 👤 Mitsuo Tomioka
- 👤 Koichi Urakawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:54
CPC Classifications
C; C21; C21D; C21D8/00; C21D8/06; C22; C22C; C22C38/00; B; B21; B21J; B21J1/00; B21J1/06; B21J5/00; B21K; B21K1/00; B21K1/44; C21D9/00; C21D9/52; C21D9/525; C21D1/00; C21D1/18; C21D2211/00; C21D2211/008
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1924099A
Cited
US2121415A
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US2119698A
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US2341264A
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US2441628A
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US2527731A
Cited
US3053703A
Cited
US3235413A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-05 | 1974-04-06 | 1974-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-05 | 1978-04-06 | 1978-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-05 | 1982-04-06 | 1982-10-06 | $7700.00 | Window Closed / Lapsed |