US2965479A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-ridging stainless steels
Assignee: Universal Cyclops Steel Corp
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Filing: 1959-01-26
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Granted: 1960-12-20
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Expires: 1979-01-26
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles T Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:26
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18; C22C38/26; B; B21; B21D; B21D22/00; B21D22/20; B21D22/201
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A NON-RIDGING FERRITIC STAINLESS STEEL CONSISTING ESSENTIALLY, BY WEIGHT, OF ABOUT 14 TO 25 PERCENT OF CHROMIUM, UP TO ABOUT 0.60 PERCENT OF CARBON, UP TO ABOUNT 1.25 PERCENT OF MANGANESE, A MAXIMUM OF ONE PERCENT OF SILICON, A SMALL AMOUNT THAT IS LESS THAN ONE PERCENT OF COLUMBIUM EFFECTIVE TO CHARACTERIZE THE RESULTING PRODUCT WITH NON-RIDGING CHARACTERISTICS UPON BEING DRAWN, AND THE REMAINDER IRON AND INCIDENTAL IMPURITIES.
Claim 2
Dependent Claim
68 words
A NON-RIDGING FERRITIC STAINLESS STEEL CONSISTING ESSENTIALLY, BY WEIGHT, OF ABOUT 14 TO 25 PERCENT OF CHROMIUM, UP TO ABOUT 0.60 PERCENT OF CARBON, UP TO ABOUNT 1.25 PERCENT OF MANGANESE, A MAXIMUM OF ONE PERCENT OF SILICON, A SMALL AMOUNT THAT IS LESS THAN ONE PERCENT OF COLUMBIUM EFFECTIVE TO CHARACTERIZE THE RESULTING PRODUCT WITH NON-RIDGING CHARACTERISTICS UPON BEING DRAWN, AND THE REMAINDER IRON AND INCIDENTAL IMPURITIES.
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) | 1963-12-20 | 1964-06-20 | 1964-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-20 | 1968-06-20 | 1968-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-20 | 1972-06-20 | 1972-12-20 | $7700.00 | Window Closed / Lapsed |