US2861883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Precipitation hardenable, corrosion resistant, chromium-nickel stainless steel alloy
Assignee: Cooper Alloy Corp
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Filing: 1956-02-09
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Granted: 1958-11-25
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Expires: 1976-02-09
Abstract
No abstract record available.
Inventors
- 👤 Norman S Mott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:59
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18; C22C38/40; C22C38/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A LOW COST PRECIPITATION HARDENABLE ALLOY OF HIGH CORROSION, EROSION, ABRASION RESISTANCE AND FAIR DUCTILITY ADEQUATE TO BE USED FOR STRESSED PARTS, SAID ALLOY CONSISTING ESSENTIALLY OF A CHROMIUM NICKEL STAINLESS STEEL OF THE TYPE KNOWN GENERALLY AS 18 AND 8, HAVING ADDED THERETO MOLYBDENUM AND SILICON, THE MOLYBDENUM RANGING FROM 3% TO 5%, AND THE SILICON RANGING FROM 2.5% TO 4%, SAID ALLOY HAVING A CARBON CONTENT NOT EXCEEDING 0.08% AND SAID ALLOY BEING FREE OF BERYLLIUM AND COPPER.
Claim 2
Dependent Claim
80 words
A LOW COST PRECIPITATION HARDENABLE ALLOY OF HIGH CORROSION, EROSION, ABRASION RESISTANCE AND FAIR DUCTILITY ADEQUATE TO BE USED FOR STRESSED PARTS, SAID ALLOY CONSISTING ESSENTIALLY OF A CHROMIUM NICKEL STAINLESS STEEL OF THE TYPE KNOWN GENERALLY AS 18 AND 8, HAVING ADDED THERETO MOLYBDENUM AND SILICON, THE MOLYBDENUM RANGING FROM 3% TO 5%, AND THE SILICON RANGING FROM 2.5% TO 4%, SAID ALLOY HAVING A CARBON CONTENT NOT EXCEEDING 0.08% AND SAID ALLOY BEING FREE OF BERYLLIUM AND COPPER.
References Cited (Backward Citations)
NL53768C
Cited
US2051415A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-24 | 1962-05-26 | 1962-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-24 | 1966-05-26 | 1966-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-24 | 1970-05-26 | 1970-11-25 | $7700.00 | Window Closed / Lapsed |