US3336558A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-linear resistance element
Assignee: Beckman Coulter Inc
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Filing: 1964-12-10
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Granted: 1967-08-15
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Expires: 1984-12-10
Abstract
No abstract record available.
Inventors
- 👤 Alan J Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:51
CPC Classifications
H; H01; H01C; H01C10/00; H01C10/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A RESISTANCE ELEMENT COMPRISING: AN INSULATING BASE MEMBER HAVING TOP AND BOTTOM SURFACES; AN ELONGATED CAVITY EXTENDING INTO SAID BASE MEMBER FROM SAID TOP SURFACE; RESISTANCE MATERIAL, HAVING KNOWN ELECTRICAL RESISTANCE PROPERTIES, DEPOSITED IN SAID CAVITY; SAID MATERIAL HAVING CROSS-SECTIONAL DIMENSIONS VARYING ALONG THE LENGTH OF SAID CAVITY IN ACCORDANCE WITH A PREDETERMINED FUNCTION; SAID RESISTANCE MATERIAL DISPOSED WITHIN SAID CAVITY FLUSH WITH SAID TOP SURFACE OF SAID BASE MEMBER; AND A THIN LAYER OF RESISTANCE MATERIAL AFFIXED TO AND OVERLAYING THE TOP SURFACES OF SAID BASE MEMBER AND SAID RESISTANCE MATERIAL DISPOSED WITHIN SAID CAVITY, SAID THIN LAYER HAVING A WIDTH SUBSTANTIALLY GREATER THAN THE WIDTH OF THE TOP SURFACE OF SAID RESISTANCE MATERIAL IN SAID CAVITY.
Claim 2
Dependent Claim
118 words
A RESISTANCE ELEMENT COMPRISING: AN INSULATING BASE MEMBER HAVING TOP AND BOTTOM SURFACES; AN ELONGATED CAVITY EXTENDING INTO SAID BASE MEMBER FROM SAID TOP SURFACE; RESISTANCE MATERIAL, HAVING KNOWN ELECTRICAL RESISTANCE PROPERTIES, DEPOSITED IN SAID CAVITY; SAID MATERIAL HAVING CROSS-SECTIONAL DIMENSIONS VARYING ALONG THE LENGTH OF SAID CAVITY IN ACCORDANCE WITH A PREDETERMINED FUNCTION; SAID RESISTANCE MATERIAL DISPOSED WITHIN SAID CAVITY FLUSH WITH SAID TOP SURFACE OF SAID BASE MEMBER; AND A THIN LAYER OF RESISTANCE MATERIAL AFFIXED TO AND OVERLAYING THE TOP SURFACES OF SAID BASE MEMBER AND SAID RESISTANCE MATERIAL DISPOSED WITHIN SAID CAVITY, SAID THIN LAYER HAVING A WIDTH SUBSTANTIALLY GREATER THAN THE WIDTH OF THE TOP SURFACE OF SAID RESISTANCE MATERIAL IN SAID CAVITY.
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) | 1970-08-14 | 1971-02-13 | 1971-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-14 | 1975-02-13 | 1975-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-14 | 1979-02-13 | 1979-08-15 | $7700.00 | Window Closed / Lapsed |