Patent US2679455A successfully refreshed from Google Patents.
US2679455A
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Methods for heat-treating molybdenum-base alloys
Assignee: Climax Molybdenum Co
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Filing: 1951-10-06
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Granted: 1954-05-25
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Expires: 1971-10-06
Abstract
No abstract record available.
Inventors
- 👤 John L Ham
- 👤 Frederick P Bens
- 👤 Alvin J Herzig
- 👤 George A Timmons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:56
CPC Classifications
C; C22; C22C; C22C27/00; C22C27/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A PROCESS FOR HARDENING A MOLYBDENUMBASE ALLOY CONTAINING NOT MORE THAN .05% OXYGEN AND FROM .03% TO 7% BERYLLIUM, THE MINIMUM BERYLLIUM INCREASING FROM .03% TO .08% AS THE OXYGEN CONTENT INCREASES FROM .001% TO .05%, WHICH COMPRISES HOLDING THE ALLOY AT A TEMPERATURE OF AT LEAST 3200* F. FOR AT LEAST ONE HOUR, QUENCHING THE ALLOY, AND THEREAFTER AGE HARDENING THE ALLOY AT A TEMPERATURE BETWEEN 1600* F. AND 2000* F.
Claim 2
Dependent Claim
72 words
A PROCESS FOR HARDENING A MOLYBDENUMBASE ALLOY CONTAINING NOT MORE THAN .05% OXYGEN AND FROM .03% TO 7% BERYLLIUM, THE MINIMUM BERYLLIUM INCREASING FROM .03% TO .08% AS THE OXYGEN CONTENT INCREASES FROM .001% TO .05%, WHICH COMPRISES HOLDING THE ALLOY AT A TEMPERATURE OF AT LEAST 3200* F. FOR AT LEAST ONE HOUR, QUENCHING THE ALLOY, AND THEREAFTER AGE HARDENING THE ALLOY AT A TEMPERATURE BETWEEN 1600* F. AND 2000* F.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-24 | 1957-11-23 | 1958-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-24 | 1961-11-23 | 1962-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-24 | 1965-11-23 | 1966-05-25 | $7700.00 | Window Closed / Lapsed |