US3326720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cermet resistance composition and resistor
Assignee: Beckman Coulter Inc
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Filing: 1963-02-12
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Granted: 1967-06-20
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Expires: 1983-02-12
Abstract
No abstract record available.
Inventors
- 👤 Jr Donald A Bruhl
- 👤 William E Counts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:23
CPC Classifications
H; H01; H01C; H01C17/00; H01C17/06; H01C17/065; H01C17/06506; H01C17/06513; H01C17/06526; H01C7/00; C; C03; C03C; C03C2217/00; C03C2217/20; C03C2217/25; C03C2217/251; C03C2218/00; C03C2218/10; C03C2218/15
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A RESISTANCE ELEMENT COMPRISING A HIGH-TEMPERATURE RESISTANT, ELECTRICALLY NONCONDUCTIVE BASE HAVING FIRED THERETO A LAYER OF RESISTANCE MATERIAL CONSISTING ESSENTIALLY OF ABOUT 84 TO 50 PERCENT BY WEIGHT OF SOLIDIFIED GLASS AND OVER 16 TO ABOUT 50 PERCENT BY WEIGHT OF AN ALLOY FORMED OF IRIDIUM AND GOLD, SAID ALLOY BEING IN FINELY DIVIDED PARTICULATE FORM AND UNIFORMLY DISPERSED THROUGHOUT THE SOLIDIFIED GLASS.
Claim 2
Dependent Claim
63 words
A RESISTANCE ELEMENT COMPRISING A HIGH-TEMPERATURE RESISTANT, ELECTRICALLY NONCONDUCTIVE BASE HAVING FIRED THERETO A LAYER OF RESISTANCE MATERIAL CONSISTING ESSENTIALLY OF ABOUT 84 TO 50 PERCENT BY WEIGHT OF SOLIDIFIED GLASS AND OVER 16 TO ABOUT 50 PERCENT BY WEIGHT OF AN ALLOY FORMED OF IRIDIUM AND GOLD, SAID ALLOY BEING IN FINELY DIVIDED PARTICULATE FORM AND UNIFORMLY DISPERSED THROUGHOUT THE SOLIDIFIED GLASS.
References Cited (Backward Citations)
US2950996A
Cited
US3200010A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-06-19 | 1970-12-19 | 1971-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-19 | 1974-12-19 | 1975-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-19 | 1978-12-19 | 1979-06-20 | $7700.00 | Window Closed / Lapsed |