Patent US2983602A successfully refreshed from Google Patents.
US2983602A
Expired / Lapsed
US
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Cobalt alloys
Assignee: IIT Research Institute
•
Filing: 1957-09-24
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Granted: 1961-05-09
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Expires: 1977-09-24
Abstract
No abstract record available.
Inventors
- 👤 David W Levinson
- 👤 Joseph B Mcandrew
- 👤 Arthur G Metcalfe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:16
CPC Classifications
C; C22; C22C; C22C19/00; C22C19/07
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
16 words
A FORGEABLE ALLOY CONSISTING OF FROM 0.2% TO 1.0% MISCHMETAL, THE BALANCE CONSISTING ESSENTIALLY OF COBALT.
Claim 2
Dependent Claim
16 words
A FORGEABLE ALLOY CONSISTING OF FROM 1.0% TO 5.0% NIOBIUM, THE BALANCE CONSISTING ESSENTIALLY OF COBALT.
Claim 3
Dependent Claim
31 words
A FORGEABLE ALLOY CONSISTING OF 5.0% OF A METAL SELECTED FROM THE CLASS CONSISTING OF VANADIUM AND TUNGSTEN AND MIXTURES THEREOF, 0.1% TO 0.4% CERIUM, THE BALANCE CONSISTING ESSENTIALLY OF COBALT.
References Cited (Backward Citations)
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Cited
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Cited
GB304371A
Cited
US2046995A
Cited
US2133291A
Cited
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US2586768A
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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) | 1964-05-08 | 1964-11-07 | 1965-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-08 | 1968-11-07 | 1969-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-08 | 1972-11-07 | 1973-05-09 | $7700.00 | Window Closed / Lapsed |