Patent US2647940A successfully refreshed from Google Patents.
Patent US3417808A successfully refreshed from Google Patents.
US3417808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Melting and casting of titanium
Assignee: Mitron Research and Development Corp
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Filing: 1967-02-23
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Granted: 1968-12-24
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Expires: 1987-02-23
Abstract
No abstract record available.
Inventors
- 👤 Robert A Rosenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:48
CPC Classifications
C; C22; C22B; C22B34/00; C22B34/10; C22B34/12; C22B34/1295
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1940619A
Cited
US2262220A
Cited
DE968822C
Cited
GB678798A
Cited
GB808843A
Cited
US2806271A
Cited
US3035318A
Cited
US3113360A
Cited
FR1310508A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-24 | 1972-06-24 | 1972-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-24 | 1976-06-24 | 1976-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-24 | 1980-06-24 | 1980-12-24 | $7700.00 | Window Closed / Lapsed |