US3584368A
Expired / Lapsed
US
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Titanium fabrication
Assignee: Alcoa Corp
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Filing: 1968-07-10
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Granted: 1971-06-15
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Expires: 1988-07-10
Abstract
Abstract USE OF STAINLESS STEEL ENVELOPES IN HEATING AND FORGING TITANIUM BILLETS. FORMATION OF SCALE AND ALPHA CASE IS REDUCED.
Inventors
- 👤 Lowrie B Sargent Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:56
CPC Classifications
C; C21; C21D; C21D1/00; C21D1/68; C21D1/70; C22; C22C; C22C38/00; C22C38/18; C22C38/40; C22F; C22F1/00; C22F1/16; C22F1/18; C22F1/183; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4981; Y10T29/49812
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-14 | 1974-12-14 | 1975-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-14 | 1978-12-14 | 1979-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-14 | 1982-12-14 | 1983-06-15 | $7700.00 | Window Closed / Lapsed |