US3381256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resistor and contact means on a base
Assignee: Monsanto Co
•
Filing: 1966-02-04
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Granted: 1968-04-30
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Expires: 1986-02-04
Abstract
No abstract record available.
Inventors
- 👤 Max J Schuller
- 👤 Michael J Urban
- 👤 Erwin F Littau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:27
CPC Classifications
H; H01; H01C; H01C7/00; H01C7/006; H01C1/00; H01C1/14; H10; H10N; H10N97/00; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12389; Y10T428/12486; Y10T428/12493; Y10T428/12528; Y10T428/12535; Y10T428/12611; Y10T428/12771; Y10T428/12806; Y10T428/12826; Y10T428/12847; Y10T428/12854; Y10T428/12861; Y10T428/12875; Y10T428/12944
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
IN AN ELECTRICAL DEVICE INCLUDING A THIN FILM RESISTOR AND A RELATIVELY THICK, LOW RESISTIVITY FILM OVER WHICH SAID THIN FILM RESISTOR IS DEPOSITED, AN IMPROVED CONTACT BETWEEN SAID RESISTOR AND SAID LOW RESISTIVITY FILM COMPRISING A FILM OF CHROMIUM DEPOSITED ON AT LEAST A PORTION OF THE SURFACE OF SAID LOW RESISTIVITY FILM AND A FILM OF A NOBLE METAL DEPOSITED ON AT LEAST A PORTION OF THE SURFACE OF SAID CHROMIUM FILM, THE THIN FILM RESISTOR BEING DEPOSITED OVER SAID NOBLE METAL FILM TO FORM GOOD ELECTRICAL CONTACT WITH SAID LOW RESISTIVITY FILM THROUGH SAID NOBLE METAL AND SAID CHROMIUM FILMS.
Claim 2
Dependent Claim
103 words
IN AN ELECTRICAL DEVICE INCLUDING A THIN FILM RESISTOR AND A RELATIVELY THICK, LOW RESISTIVITY FILM OVER WHICH SAID THIN FILM RESISTOR IS DEPOSITED, AN IMPROVED CONTACT BETWEEN SAID RESISTOR AND SAID LOW RESISTIVITY FILM COMPRISING A FILM OF CHROMIUM DEPOSITED ON AT LEAST A PORTION OF THE SURFACE OF SAID LOW RESISTIVITY FILM AND A FILM OF A NOBLE METAL DEPOSITED ON AT LEAST A PORTION OF THE SURFACE OF SAID CHROMIUM FILM, THE THIN FILM RESISTOR BEING DEPOSITED OVER SAID NOBLE METAL FILM TO FORM GOOD ELECTRICAL CONTACT WITH SAID LOW RESISTIVITY FILM THROUGH SAID NOBLE METAL AND SAID CHROMIUM FILMS.
References Cited (Backward Citations)
US2758256A
Cited
US3256587A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-30 | 1971-10-30 | 1972-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-30 | 1975-10-30 | 1976-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-30 | 1979-10-30 | 1980-04-30 | $7700.00 | Window Closed / Lapsed |