US3015587A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rhodium germanium film resistor
Assignee: Technology Instrument Corp of Acton
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Filing: 1958-09-05
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Granted: 1962-01-02
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Expires: 1978-09-05
Abstract
No abstract record available.
Inventors
- 👤 William J Macdouald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:27
CPC Classifications
H; H01; H01C; H01C17/00; H01C17/06; H01C17/075; H01C17/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A PROCESS FOR REDUCING AN ELECTRICAL RESISTOR ELEMENT COMPRISING THE STEPS OF PROVIDING AS A SUBSTRATE A PIECE OF RIGID ELECTRICALLY INSULATING MATERIAL HAVING A PLANAR SURFACE, CLEANING AND SLIGHTLY ABRADING SAID PLANAR SURFACE, DEPOSITING ON SAID PLANAR SURFACE A THIN FILM COMPRISING RHODIUM AND GERMANIUM IN PREDETERMINED RELATIVE AMOUNTS, AND THEREAFTER SUBJECTING SAID SUBSTRATE AND FILM TO HEAT TREATMENT AT AN ELEVATED TEMPERATURE FOR AN EXTENDED PERIOD OF TIME.
Claim 2
Dependent Claim
70 words
A PROCESS FOR REDUCING AN ELECTRICAL RESISTOR ELEMENT COMPRISING THE STEPS OF PROVIDING AS A SUBSTRATE A PIECE OF RIGID ELECTRICALLY INSULATING MATERIAL HAVING A PLANAR SURFACE, CLEANING AND SLIGHTLY ABRADING SAID PLANAR SURFACE, DEPOSITING ON SAID PLANAR SURFACE A THIN FILM COMPRISING RHODIUM AND GERMANIUM IN PREDETERMINED RELATIVE AMOUNTS, AND THEREAFTER SUBJECTING SAID SUBSTRATE AND FILM TO HEAT TREATMENT AT AN ELEVATED TEMPERATURE FOR AN EXTENDED PERIOD OF TIME.
References Cited (Backward Citations)
US2097140A
Cited
US2341219A
Cited
US2423476A
Cited
US2552626A
Cited
US2629800A
Cited
US2855493A
Cited
US2789187A
Cited
US2778743A
Cited
US2847325A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-01 | 1965-07-03 | 1966-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-01 | 1969-07-03 | 1970-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-01 | 1973-07-03 | 1974-01-02 | $7700.00 | Window Closed / Lapsed |