US2897539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disintegrating refractory metals
Assignee: Titanium Metals Corp
•
Filing: 1957-03-25
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Granted: 1959-08-04
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Expires: 1977-03-25
Abstract
No abstract record available.
Inventors
- 👤 John E Mcmillan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:41
CPC Classifications
C; C22; C22B; C22B34/00; C22B34/10; C22B34/12; C22B34/1295; B; B22; B22F; B22F9/00; B22F9/02; B22F9/06; B22F9/08; B22F9/10; B22F9/14; B22F9/082; B22F2009/084
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US884571A
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US2208919A
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US2304130A
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US2189387A
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US2587710A
Cited
US2699576A
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US2793395A
Cited
US2795819A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-03 | 1963-02-02 | 1963-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-03 | 1967-02-02 | 1967-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-03 | 1971-02-02 | 1971-08-04 | $7700.00 | Window Closed / Lapsed |