US3454431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing dispersion strengthened nickel-chromium alloys
Assignee: Viridian Inc Canada
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Filing: 1966-07-22
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Granted: 1969-07-08
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Expires: 1986-07-22
Abstract
No abstract record available.
Inventors
- 👤 Robert William Fraser
- 👤 Bud William Kushnir
- 👤 Bauke Weizenbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:14
CPC Classifications
C; C22; C22C; C22C32/00; C22C32/001; C22C32/0015; C22C32/0026
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A PROCESS FOR PRODUCING WROUGHT DISPERSION STRENGTHENED NICKEL-CHROMIUM ALLOYS WHICH COMPRISES PROVIDING A SUBSTANTIALLY FULLY DENSE WROUGHT SHAPE HAVING A NICKEL MATRIX WITH A CHARACTERISTIC MICRO-STRUCTURE AND CONTAINING A DISPERSION OF REFRACTORY PARTICLES; DEPOSITING FROM ABOUT 10% TO ABOUT 35% BY WEIGHT CHROMIUM ON SAID WROUGHT SHAPE; THEREAFTER HOMOGENIZING THE DEPOSITED CHROMIUM WITH THE NICKEL MATRIX BY HEATING THE SHAPE AT A TEMPERATURE WITHIN THE RANGE OF ABOUT 2000*F. TO ABOUT 2400*F. IN A PROTECTIVE ATMOSPHERE FOR A PERIOD OF TIME SUFFICIENT TO PRODUCE A SUBSTANTIALLY UNIFORM CHROMIUM DISTRIBUTION THROUGHOUT THE WROUGHT SHAPE WHEREBY A DISPERSION STRENGTHENED NICKEL-CHROMIUM ALLOY PRODUCT HAVING SUBSTANTIALLY THE SAME CHARACTERISTIC MICRO-STRUCTURE AS THE INITIAL NICKEL MATRIX IS OBTAINED.
Claim 2
Dependent Claim
113 words
A PROCESS FOR PRODUCING WROUGHT DISPERSION STRENGTHENED NICKEL-CHROMIUM ALLOYS WHICH COMPRISES PROVIDING A SUBSTANTIALLY FULLY DENSE WROUGHT SHAPE HAVING A NICKEL MATRIX WITH A CHARACTERISTIC MICRO-STRUCTURE AND CONTAINING A DISPERSION OF REFRACTORY PARTICLES; DEPOSITING FROM ABOUT 10% TO ABOUT 35% BY WEIGHT CHROMIUM ON SAID WROUGHT SHAPE; THEREAFTER HOMOGENIZING THE DEPOSITED CHROMIUM WITH THE NICKEL MATRIX BY HEATING THE SHAPE AT A TEMPERATURE WITHIN THE RANGE OF ABOUT 2000*F. TO ABOUT 2400*F. IN A PROTECTIVE ATMOSPHERE FOR A PERIOD OF TIME SUFFICIENT TO PRODUCE A SUBSTANTIALLY UNIFORM CHROMIUM DISTRIBUTION THROUGHOUT THE WROUGHT SHAPE WHEREBY A DISPERSION STRENGTHENED NICKEL-CHROMIUM ALLOY PRODUCT HAVING SUBSTANTIALLY THE SAME CHARACTERISTIC MICRO-STRUCTURE AS THE INITIAL NICKEL MATRIX IS OBTAINED.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-07 | 1973-01-06 | 1973-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-07 | 1977-01-06 | 1977-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-07 | 1981-01-06 | 1981-07-08 | $7700.00 | Window Closed / Lapsed |