US2801165A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cobalt-base alloys
Assignee: Coast Metals Inc
•
Filing: 1955-09-30
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Granted: 1957-07-30
•
Expires: 1975-09-30
Abstract
No abstract record available.
Inventors
- 👤 James F Baldwin
- 👤 Roy O Sheets
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:34
CPC Classifications
C; C22; C22C; C22C19/00; C22C19/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
AN ALLOT WHICH IS ESPECIALLY RESISTANT TO FATIGUE AT HIGH TEMPERATURES, SAID ALLOY CONSISTING OF CARBON IN AMOUNTS OF FROM ABOUT 1.35% TO ABOUT 2.25%, CHROMIUM IN AMOUNTS OF FROM ABOUT 26% TO ABOUT 30%, COBALT IN AMOUNTS OF FROM ABOUT 44% TO ABOUT 51%, TUNGSTEN IN AMOUNTS OF FROM ABOUT 18.75% TO ABOUT 23.25%, AND SILICON UP TO MAXIMUM OF ABOUT 1.75%, THE BALANCE OF THE ALLOY SUBSTANTIALLY ALL IRON, BUT NOT TO EXCEED ABOUT 3%.
Claim 2
Dependent Claim
77 words
AN ALLOT WHICH IS ESPECIALLY RESISTANT TO FATIGUE AT HIGH TEMPERATURES, SAID ALLOY CONSISTING OF CARBON IN AMOUNTS OF FROM ABOUT 1.35% TO ABOUT 2.25%, CHROMIUM IN AMOUNTS OF FROM ABOUT 26% TO ABOUT 30%, COBALT IN AMOUNTS OF FROM ABOUT 44% TO ABOUT 51%, TUNGSTEN IN AMOUNTS OF FROM ABOUT 18.75% TO ABOUT 23.25%, AND SILICON UP TO MAXIMUM OF ABOUT 1.75%, THE BALANCE OF THE ALLOY SUBSTANTIALLY ALL IRON, BUT NOT TO EXCEED ABOUT 3%.
References Cited (Backward Citations)
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Cited
US2235232A
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US2553609A
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US2309372A
Cited
US2299871A
Cited
US2551170A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-29 | 1961-01-28 | 1961-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-29 | 1965-01-28 | 1965-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-29 | 1969-01-28 | 1969-07-30 | $7700.00 | Window Closed / Lapsed |