US2840468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel gold alloys and potentiometer wires produced from them
Assignee: Sigmund Cohn Corp
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Filing: 1958-02-04
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Granted: 1958-06-24
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Expires: 1978-02-04
Abstract
No abstract record available.
Inventors
- 👤 Brenner Bert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:10
CPC Classifications
C; C22; C22C; C22C5/00; C22C5/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
57 words
A POTENTIOMETER HAVING AS A COMPONENT A WIRE WINDING COMPRISING A GOLD ALLOY IN WHICH GOLD CONSTITUTES THE MAJOR PROPORTION OF THE ALLOY, AND WHICH ALSO CONTAINS BETWEEN ABOUT 6% AND 12% CHROMIUM AND NICKEL IN AN AMOUNT OF AT LEAST 75% OF THE CHROMIUM CONTENT AND FROM ABOUT 6% UP TO ABOUT 30% OF THE ALLOY.
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) | 1961-06-23 | 1961-12-23 | 1962-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-23 | 1965-12-23 | 1966-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-23 | 1969-12-23 | 1970-06-24 | $7700.00 | Window Closed / Lapsed |