US3353134A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resistive element and variable resistor
Assignee: Amphenol Corp
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Filing: 1964-08-17
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Granted: 1967-11-14
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Expires: 1984-08-17
Abstract
No abstract record available.
Inventors
- 👤 Vito D Elarde
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:45
CPC Classifications
H; H01; H01C; H01C10/00; H01C10/30; H01C10/32; H01B; H01B1/00; H01C10/301; H01C10/303; H01C10/308; H01C7/00; H01C7/006; Y; Y10; Y10S; Y10S338/00; Y10S338/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A RESISTIVE ELEMENT COMPRISING AN INSULTATING BASE COATED WITH AN ELECTRICAL RESISTANCE ALLOY CONSISTING ESSENTIALLY OF 20 TO 65 PERCENT NICKEL, 15 TO 75 PERCENT CHROMIUM AND THE REMAINDER IRON, HAVING A FILM COATING THEREON OF A NOBLE METAL SELECTED FROM THE GROUP CONSISTING OF PLATINUM, RHODIUM, AND IRIDIUM, SAID NICKEL-CHROMIUMIRON COATING HAVING A THICKNESS OF BETWEEN 100 AND 2,000 ANGSTROM UNITS, AND SAID FILM COATING HAVING A THICKNESS SUCH THAT THE RESISTANCE DENSITY THEREOF IS BETWEEN 8,000 AND 13,000 OHMS PER SQUARE.
Claim 2
Dependent Claim
83 words
A RESISTIVE ELEMENT COMPRISING AN INSULTATING BASE COATED WITH AN ELECTRICAL RESISTANCE ALLOY CONSISTING ESSENTIALLY OF 20 TO 65 PERCENT NICKEL, 15 TO 75 PERCENT CHROMIUM AND THE REMAINDER IRON, HAVING A FILM COATING THEREON OF A NOBLE METAL SELECTED FROM THE GROUP CONSISTING OF PLATINUM, RHODIUM, AND IRIDIUM, SAID NICKEL-CHROMIUMIRON COATING HAVING A THICKNESS OF BETWEEN 100 AND 2,000 ANGSTROM UNITS, AND SAID FILM COATING HAVING A THICKNESS SUCH THAT THE RESISTANCE DENSITY THEREOF IS BETWEEN 8,000 AND 13,000 OHMS PER SQUARE.
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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) | 1970-11-13 | 1971-05-15 | 1971-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-13 | 1975-05-15 | 1975-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-13 | 1979-05-15 | 1979-11-14 | $7700.00 | Window Closed / Lapsed |