US3326645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cermet resistance element and material
Assignee: Beckman Coulter Inc
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Filing: 1965-09-22
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Granted: 1967-06-20
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Expires: 1985-09-22
Abstract
No abstract record available.
Inventors
- 👤 Counts William Edward
- 👤 Kelly William Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:23
CPC Classifications
C; C03; C03C; C03C14/00; H; H01; H01C; H01C17/00; H01C17/06; H01C17/065; H01C17/06506; H01C17/06513; H01C17/06526; H01C17/06533; H01C17/0654; C03C2214/00; C03C2214/08; Y; Y10; Y10T; Y10T428/00; Y10T428/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A CERMET COMPOSITION ADAPTED TO BE FIRED ONTO A NON-CONDUCTING BASE MEMBER TO FORM A THIN RESISTANCE LAYER CONSISTING ESSENTIALLY OF: ABOUT 50 TO 95% BY WEIGHT OF GLASS MATERIAL; AND 5 TO 50% BY WEIGHT OF AN ALLOY OF RUTHENIUM AND RHODIUM IN WHICH THE METAL ALLOY IS SO CORRELATED TO THE GLASS MATERIAL THAT THE MINIMUM PROPORTION OF RUTHENIUM METAL IS AT LEAST 10% BY WEIGHT OF THE METAL ALLOY FOR ALL PROPORTIONS OF THE ALLOY CONTENT, SAID GLASS MATERIAL HAVING A MELTING POINT LOWER THAN THAT OF SAID ALLOY OF RUTHENIUM AND RHODIUM.
Claim 2
Dependent Claim
96 words
A CERMET COMPOSITION ADAPTED TO BE FIRED ONTO A NON-CONDUCTING BASE MEMBER TO FORM A THIN RESISTANCE LAYER CONSISTING ESSENTIALLY OF: ABOUT 50 TO 95% BY WEIGHT OF GLASS MATERIAL; AND 5 TO 50% BY WEIGHT OF AN ALLOY OF RUTHENIUM AND RHODIUM IN WHICH THE METAL ALLOY IS SO CORRELATED TO THE GLASS MATERIAL THAT THE MINIMUM PROPORTION OF RUTHENIUM METAL IS AT LEAST 10% BY WEIGHT OF THE METAL ALLOY FOR ALL PROPORTIONS OF THE ALLOY CONTENT, SAID GLASS MATERIAL HAVING A MELTING POINT LOWER THAN THAT OF SAID ALLOY OF RUTHENIUM AND RHODIUM.
References Cited (Backward Citations)
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 |