US3450528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing dispersioned hardenable steel
Assignee: Crucible Materials Corp
•
Filing: 1968-07-25
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Granted: 1969-06-17
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Expires: 1988-07-25
Abstract
No abstract record available.
Inventors
- 👤 Vernon R Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:39
CPC Classifications
C; C22; C22C; C22C33/00; C22C33/02; B; B22; B22F; B22F2998/00; B22F2998/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA616393A
Cited
US2725228A
Cited
US3053706A
Cited
US3235958A
Cited
US3380861A
Cited
US3369892A
Cited
US3340056A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-16 | 1972-12-16 | 1973-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-16 | 1976-12-16 | 1977-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-16 | 1980-12-16 | 1981-06-17 | $7700.00 | Window Closed / Lapsed |