US3366471A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High strength alloy steel compositions and process of producing high strength steel including hot-cold working
Assignee: Republic Steel Corp
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Filing: 1963-11-12
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Granted: 1968-01-30
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Expires: 1983-11-12
Abstract
No abstract record available.
Inventors
- 👤 Hill Morse
- 👤 Stephen J Matas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:44
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/10; C22C38/105
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
AN ALLOY STEEL CONSISTING OF ESSENTIALLY OF ABOUT: 3 TO 12% OF METAL OF THE GROUP NICKEL AND COPPER, COPPER WHEN PRESENT NOT EXCEEDING ONE-HALF THE NICKEL CONTENT, 0.2 TO 7% COBALT, UP TO 2% EACH OF MANGANESE, CHROMIUM AND ALUMINUM, UP TO 1.5% SILICON, UP TO 3.5%
Claim 2
Dependent Claim
48 words
AN ALLOY STEEL CONSISTING OF ESSENTIALLY OF ABOUT: 3 TO 12% OF METAL OF THE GROUP NICKEL AND COPPER, COPPER WHEN PRESENT NOT EXCEEDING ONE-HALF THE NICKEL CONTENT, 0.2 TO 7% COBALT, UP TO 2% EACH OF MANGANESE, CHROMIUM AND ALUMINUM, UP TO 1.5% SILICON, UP TO 3.5%
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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) | 1971-01-29 | 1971-07-31 | 1972-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-29 | 1975-07-31 | 1976-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-29 | 1979-07-31 | 1980-01-30 | $7700.00 | Window Closed / Lapsed |