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US2628900A
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Ni-cr-mn alloys
Assignee: C O JELLIFF Manufacturing Corp
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Filing: 1949-11-29
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Granted: 1953-02-17
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Expires: 1969-11-29
Abstract
No abstract record available.
Inventors
- 👤 John H Jackson
- 👤 Charles T Greenidge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:00
CPC Classifications
C; C22; C22C; C22C19/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
AN ALLOY FOR ELECTRICAL RESISTOR ELEMENTS CONSISTING OF 50% TO 70% NI, 8% TO 28% CR, AND THE BALANCE ESSENTIALLY ALL MN, SAID MN, CONSTITUTING 15% TO 36% OF THE ALLOY, THE RESISTIVITY PROPERTIES OF SAID ALLOY HAVING BEEN IMPROVED BY SOLUTION TREATMENT AT 1500* F. TO 2100* F. FOR FROM ABOUT 2 SECONDS TO ABOUT 100 HOURS FOLLOWED BY AN AGING TREATMENT AT A TEMPERATURE OF FROM 600* F. TO 1200* F. FOR A PERIOD OF FROM 1/4 TO 100 HOURS.
Claim 2
Dependent Claim
82 words
AN ALLOY FOR ELECTRICAL RESISTOR ELEMENTS CONSISTING OF 50% TO 70% NI, 8% TO 28% CR, AND THE BALANCE ESSENTIALLY ALL MN, SAID MN, CONSTITUTING 15% TO 36% OF THE ALLOY, THE RESISTIVITY PROPERTIES OF SAID ALLOY HAVING BEEN IMPROVED BY SOLUTION TREATMENT AT 1500* F. TO 2100* F. FOR FROM ABOUT 2 SECONDS TO ABOUT 100 HOURS FOLLOWED BY AN AGING TREATMENT AT A TEMPERATURE OF FROM 600* F. TO 1200* F. FOR A PERIOD OF FROM 1/4 TO 100 HOURS.
References Cited (Backward Citations)
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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) | 1956-02-17 | 1956-08-18 | 1957-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-17 | 1960-08-18 | 1961-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-17 | 1964-08-18 | 1965-02-17 | $7700.00 | Window Closed / Lapsed |