Patent US3698962A successfully refreshed from Google Patents.
US3698962A
Expired / Lapsed
US
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Method for producing superalloy articles by hot isostatic pressing
Assignee: Crucible Materials Corp
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Filing: 1971-04-30
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Granted: 1972-10-17
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Expires: 1991-04-30
Abstract
Abstract THE PRODUCTION OF SUPERALLOY ARTICLES FROM SUPERALLOY POWDERS CONTAINING A DISPERSION OF GAMMA PRIME PARTICLES AND AN AVERAGE GRAIN DIAMETER OF 20 MICRONS MAXIMUM BY HEATING THE POWDER TO A TEMPERATURE AT OR ABOVE A SELECTED COMPACTING TEMPERATURE BUT BELOW THE TEMPERATURE AT WHICH THE GAMMA PRIME PARTICLES DISSOLVE AND ISOSTICALLY COMPACTING THE POWDER TO A DENSITY OF AT LEAST 95% PRIOR TO COOLING BELOW THE SELECTED COMPACTING TEMPERATURE.
Inventors
- 👤 August Kasak
- 👤 Vernon R Thompson
- 👤 John H Moll
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:22
CPC Classifications
B; B22; B22F; B22F3/00; B22F3/12; B22F3/16; B22F3/14; B22F3/15; 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) | 1975-10-17 | 1976-04-17 | 1976-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-17 | 1980-04-17 | 1980-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-17 | 1984-04-17 | 1984-10-17 | $7700.00 | Window Closed / Lapsed |