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US4445944B1
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US4445944B1 - - Google Patents
Assignee: Monaghan Medical Corp
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Filing: 1981-09-17
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Granted: 1987-12-15
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Expires: 2001-09-17
Abstract
Abstract A method of heat treating a nickel-cobalt-iron controlled expansion alloy to overage the alloy and provide high notch strength at temperatures of about 538 DEG C.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:08
CPC Classifications
C; C22; C22F; C22F1/00; C22F1/10; C21; C21D; C21D6/00; C21D6/001; C22C; C22C19/00; C22C19/03; C22C38/00; C22C38/10; C22C38/105
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) | 1990-12-14 | 1991-06-15 | 1991-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-14 | 1995-06-15 | 1995-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-14 | 1999-06-15 | 1999-12-15 | $7700.00 | Window Closed / Lapsed |