US2789929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of heat treating molybdenum and molybdenum alloys
Assignee: Individual
•
Filing: 1953-01-08
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Granted: 1957-04-23
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Expires: 1973-01-08
Abstract
No abstract record available.
Inventors
- 👤 Stuart V Cuthbert
- 👤 Sutherlin Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:58
CPC Classifications
C; C22; C22C; C22C27/00; C22C27/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
IN THE PROCESS OF HEAT TREATING MOLYBDENUM AND MOLYBDENUM-COBALT ALLOYS CONTAINING UP TO APPROXIMATELY .3% COBALT THE IMPROVEMENT WHICH COMPRISES HEATING THE METAL AT TEMPERATURE UP TO 1900*C. OVER A PERIOD OF TWO WEEKS WITH SOAKING PERIODS EACH WEEK OF FROM ABOUT TWENTY TO ABOUT FORTY HOURS BETWEEN ABOUT 1200 AND 1250*C. AND ABOUT TWENTY TO ABOUT FIFTY HOURS BETWEEN ABOUT 1600 AND 1650*C.
Claim 2
Dependent Claim
64 words
IN THE PROCESS OF HEAT TREATING MOLYBDENUM AND MOLYBDENUM-COBALT ALLOYS CONTAINING UP TO APPROXIMATELY .3% COBALT THE IMPROVEMENT WHICH COMPRISES HEATING THE METAL AT TEMPERATURE UP TO 1900*C. OVER A PERIOD OF TWO WEEKS WITH SOAKING PERIODS EACH WEEK OF FROM ABOUT TWENTY TO ABOUT FORTY HOURS BETWEEN ABOUT 1200 AND 1250*C. AND ABOUT TWENTY TO ABOUT FIFTY HOURS BETWEEN ABOUT 1600 AND 1650*C.
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) | 1960-04-22 | 1960-10-22 | 1961-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-22 | 1964-10-22 | 1965-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-22 | 1968-10-22 | 1969-04-23 | $7700.00 | Window Closed / Lapsed |