US3522110A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of coldrolled steel sheets having excellent press workability
Assignee: Nippon Steel Corp
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Filing: 1967-02-15
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Granted: 1970-07-28
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Expires: 1987-02-15
Abstract
No abstract record available.
Inventors
- 👤 Mineo Shimizu
- 👤 Kamematsu Matsuda
- 👤 Yuzo Sadamura
- 👤 Nobuyuki Takahashi
- 👤 Minoru Kawaharada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:41
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/14; B; B21; B21B; B21B1/00; B21B1/22; B21B1/24; C21; C21D; C21D8/00; C21D8/02; C21D8/04; C21D8/0447; C21D8/0473; C21D8/0421; C21D8/0426; C21D8/0436
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-27 | 1974-01-26 | 1974-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-27 | 1978-01-26 | 1978-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-27 | 1982-01-26 | 1982-07-28 | $7700.00 | Window Closed / Lapsed |