US2858208A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nickel base alloy for use as an electrical resistance element
Assignee: HOSKINS ALLOYS LLC
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Filing: 1955-12-16
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Granted: 1958-10-28
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Expires: 1975-12-16
Abstract
No abstract record available.
Inventors
- 👤 Norman F Spooner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:03
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/02; C; C22; C22C; C22C19/00; C22C19/03; C22C19/05; C22C19/058
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
AN ELECTRICAL RESISTANCE HEATING ELEMENT FORMED OF AN ALLOY CONSISTING ESSENTIALLY OF 60% TO 75% NICKEL, 18% TO 22% CHROMIUM, 7% TO 10% IRON, 1.5% TO 2.5% SILICON, 1% TO 2% COBALT AND .25% TO 1% COLUMBIUM.
Claim 2
Dependent Claim
37 words
AN ELECTRICAL RESISTANCE HEATING ELEMENT FORMED OF AN ALLOY CONSISTING ESSENTIALLY OF 60% TO 75% NICKEL, 18% TO 22% CHROMIUM, 7% TO 10% IRON, 1.5% TO 2.5% SILICON, 1% TO 2% COBALT AND .25% TO 1% COLUMBIUM.
References Cited (Backward Citations)
US2008862A
Cited
US2145020A
Cited
US2422489A
Cited
US2747992A
Cited
FR1043378A
Cited
FR1106645A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-27 | 1962-04-28 | 1962-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-27 | 1966-04-28 | 1966-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-27 | 1970-04-28 | 1970-10-28 | $7700.00 | Window Closed / Lapsed |