US2498769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of alloys
Assignee: Westinghouse Electric Corp
•
Filing: 1944-10-21
•
Granted: 1950-02-28
•
Expires: 1964-10-21
Abstract
No abstract record available.
Inventors
- 👤 John H Ramage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:11
CPC Classifications
C; C22; C22C; C22C1/00; C22C1/04; C22C1/045; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/1216
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
THE METHOD OF FORMING AN ALLOY OF A METAL SELECTED FROM THE GROUP CONSISTING OF MOLYBDENUM, TUNGSTEN AND MIXTURES THEREOF, WITH SUCH A PROPORTION OF CHROMIUM THAN ITS MELTING POINT WILL BE ABOVE 90% OF THAT OF THE SELECTED METAL AS MEASURED IN DEGREES C., FOR PROTECTION AGAINST OXIDATION AT ELEVATED TEMPERATURES, COMPRISING ONE OF THE SAID CAMS TO CAUSE THE SLASHING KNIFE TO BE OPERATED PERIODICALLY, THE RATIO BETWEEN THE
Claim 2
Independent Claim
71 words
THE METHOD OF FORMING AN ALLOY OF A METAL SELECTED FROM THE GROUP CONSISTING OF MOLYBDENUM, TUNGSTEN AND MIXTURES THEREOF, WITH SUCH A PROPORTION OF CHROMIUM THAN ITS MELTING POINT WILL BE ABOVE 90% OF THAT OF THE SELECTED METAL AS MEASURED IN DEGREES C., FOR PROTECTION AGAINST OXIDATION AT ELEVATED TEMPERATURES, COMPRISING ONE OF THE SAID CAMS TO CAUSE THE SLASHING KNIFE TO BE OPERATED PERIODICALLY, THE RATIO BETWEEN THE
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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) | 1953-02-27 | 1953-08-29 | 1954-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-27 | 1957-08-29 | 1958-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-27 | 1961-08-29 | 1962-02-28 | $7700.00 | Window Closed / Lapsed |