US3705827A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nickel-iron base alloys and heat treatment therefor
Assignee: Carpenter Technology Corp
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Filing: 1971-05-12
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Granted: 1972-12-12
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Expires: 1991-05-12
Abstract
Abstract PRECIPITATION HARDENED NICKEL-IRON BASE ALLOYS WITH OR WITHOUT CHROMIUM AND COBALT CONTAINING COLUMBIUM, TITANIUM AND ALUMINUM ARE PROVIDED BY HEAT TREATMENT WITH A UNIQUE COMBINATION OF ROOM TEMPERATURE AND ELEVATED TEMPERATURE PROPERTIES.
Inventors
- 👤 Donald R Muzyka
- 👤 Donald K Schlosser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:47
CPC Classifications
C; C22; C22F; C22F1/00; C22F1/10
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) | 1975-12-12 | 1976-06-12 | 1976-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-12 | 1980-06-12 | 1980-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-12 | 1984-06-12 | 1984-12-12 | $7700.00 | Window Closed / Lapsed |