US3140460A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tungsten resistance elements
Assignee: Space Age Materials Corp
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Filing: 1961-10-16
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Granted: 1964-07-07
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Expires: 1981-10-16
Abstract
No abstract record available.
Inventors
- 👤 Turkat Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:56
CPC Classifications
H; H01; H01C; H01C1/00; H01C1/02; H01C1/032; H01C7/00; H01C7/006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A RESISTANCE ELEMENT COMPRISING AN INSULATION CORE, A TUNGSTEN-CONTAINING VAPOR DEPOSITED METAL FILM THEREON WHOSE RESISTANCE INCREASE WITH THE ELECTRIC POWER APPLIED, END TERMINALS IN CONTACT WITH AID METAL FILM, A THIN PLASTIC PROTECTIVE COVER EXTENDING OVER SAID RESISTANCE ELEMENT FROM END TO END, TINNNED COPPER LEADS CONNECTED TO SAID TERMINALS, AND GOLD BANDS FOR CONNECTING EACH OF SAID TERMINALS TO SAID METAL FILM.
Claim 2
Dependent Claim
64 words
A RESISTANCE ELEMENT COMPRISING AN INSULATION CORE, A TUNGSTEN-CONTAINING VAPOR DEPOSITED METAL FILM THEREON WHOSE RESISTANCE INCREASE WITH THE ELECTRIC POWER APPLIED, END TERMINALS IN CONTACT WITH AID METAL FILM, A THIN PLASTIC PROTECTIVE COVER EXTENDING OVER SAID RESISTANCE ELEMENT FROM END TO END, TINNNED COPPER LEADS CONNECTED TO SAID TERMINALS, AND GOLD BANDS FOR CONNECTING EACH OF SAID TERMINALS TO SAID METAL FILM.
References Cited (Backward Citations)
US792638A
Cited
US1093792A
Cited
US2803729A
Cited
US2962393A
Cited
US3013328A
Cited
US3018198A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-07 | 1968-01-06 | 1968-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-07 | 1972-01-06 | 1972-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-07 | 1976-01-06 | 1976-07-07 | $7700.00 | Window Closed / Lapsed |