US3254991A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steel alloy and method of making same
Assignee: Republic Steel Corp
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Filing: 1962-06-29
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Granted: 1966-06-07
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Expires: 1982-06-29
Abstract
No abstract record available.
Inventors
- 👤 Jr John T Shimmin
- 👤 Thomas E Perry
- 👤 Roderick J Place
- 👤 Vretas Tom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:51
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18; C22C38/40; C22C38/44; C21; C21C; C21C5/00; C21C5/52; C22C38/50; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A STEEL ALLOY CONSISTING ESSENTIALLY OF ABOUT: 0.15% TO 0.60% CARBON, 1.40% TO 1.80% CHROMIUM, 2.0% TO 4.0% NICKEL, 0.60% TO 1.20% MOLYBDENUM, METAL SELECTED FROM THE GROUP CONSISTING OF COLUMBIUM AND VANADIUM, IN AN AMOUNT OF FROM 0.03 TO 0.10% COLUMBIUM WHEN THE SELECTED METAL IS COLUMBIUM ALONE, AND WITH VANDIUM IN APPROXIMATELY TWICE THE AMOUNT OF REPLACED COLUMBIUM TO THE EXTENT THAT VANADIUM REPLACES COLUMBIUM IN THE SELECTED METAL, NIL TO 1.0% MANGANESE, AND QUANTITIES RANGING FROM NIL TO NOT MORE THAN THE FOLLOWING AMOUNTS OF THE FOLLOWING IMPURITIES, AND THE BALANCE IRON.
Claim 2
Dependent Claim
95 words
A STEEL ALLOY CONSISTING ESSENTIALLY OF ABOUT: 0.15% TO 0.60% CARBON, 1.40% TO 1.80% CHROMIUM, 2.0% TO 4.0% NICKEL, 0.60% TO 1.20% MOLYBDENUM, METAL SELECTED FROM THE GROUP CONSISTING OF COLUMBIUM AND VANADIUM, IN AN AMOUNT OF FROM 0.03 TO 0.10% COLUMBIUM WHEN THE SELECTED METAL IS COLUMBIUM ALONE, AND WITH VANDIUM IN APPROXIMATELY TWICE THE AMOUNT OF REPLACED COLUMBIUM TO THE EXTENT THAT VANADIUM REPLACES COLUMBIUM IN THE SELECTED METAL, NIL TO 1.0% MANGANESE, AND QUANTITIES RANGING FROM NIL TO NOT MORE THAN THE FOLLOWING AMOUNTS OF THE FOLLOWING IMPURITIES, AND THE BALANCE IRON.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-06 | 1969-12-06 | 1970-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-06 | 1973-12-06 | 1974-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-06 | 1977-12-06 | 1978-06-07 | $7700.00 | Window Closed / Lapsed |