US2978314A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compositions for electrical resistance films
Assignee: Fairchild Semiconductor Corp
•
Filing: 1956-03-05
•
Granted: 1961-04-04
•
Expires: 1976-03-05
Abstract
No abstract record available.
Inventors
- 👤 Lawrence B Krauss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:27
CPC Classifications
H; H01; H01C; H01C17/00; H01C17/28; H01B; H01B1/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
AS A NEW COMPOSITION OF MATTER, AN INTIMATE PHYSICAL MIXTURE OF FINELY DIVIDED METALLIC PARTICLES CONSISTING OF SUBSTANTIALLY 80 PERCENT TOTAL WEIGHT OF PALLADIUM AND RHODIUM IN THE WEIGHT PROPORTIONS OF FROM 1.4 TO 1.67 OF PALLADIUM TO 1 OF RHODIUM, THE BALANCE OF THE TOTAL WEIGHT BEING GOLD.
Claim 2
Dependent Claim
49 words
AS A NEW COMPOSITION OF MATTER, AN INTIMATE PHYSICAL MIXTURE OF FINELY DIVIDED METALLIC PARTICLES CONSISTING OF SUBSTANTIALLY 80 PERCENT TOTAL WEIGHT OF PALLADIUM AND RHODIUM IN THE WEIGHT PROPORTIONS OF FROM 1.4 TO 1.67 OF PALLADIUM TO 1 OF RHODIUM, THE BALANCE OF THE TOTAL WEIGHT BEING GOLD.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-03 | 1964-10-03 | 1965-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-03 | 1968-10-03 | 1969-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-03 | 1972-10-03 | 1973-04-04 | $7700.00 | Window Closed / Lapsed |