US3206702A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical resistance element
Assignee: Beckman Coulter Inc
•
Filing: 1963-07-01
•
Granted: 1965-09-14
•
Expires: 1983-07-01
Abstract
No abstract record available.
Inventors
- 👤 Whitney L Greenwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:30
CPC Classifications
H; H01; H01C; H01C10/00; H01C10/30; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49099; Y10T29/49101
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A RESISTANCE ELEMENT COMPRISING A NON-CONDUCTIVE BASE MEMBER HAVING A SUBSTANTIALLY SMOOTH SURFACE AREA THEREON; A LAYER OF RESISTANCE MATERIAL DEPOSITED ON SAID FLAT SURFACE OF SAID BASE MEMBER, SAID LAYER OF RESISTANCE MATERIAL HAVING A GAP THEREIN; AND A NON-CONDUCTIVE FILM DISPOSED IN SAID GAP, SAID FILM BEING OF SUBSTANTIALLY THE SAME THICKNESS AS SAID LAYER AND SO ARRANGED AS TO PROVIDE NARROW FISSURES ON EITHER SIDE THEREOF BETWEEN SAID NON-CONDUCTIVE FILM AND SAID RESISTANCE LAYER.
Claim 2
Dependent Claim
77 words
A RESISTANCE ELEMENT COMPRISING A NON-CONDUCTIVE BASE MEMBER HAVING A SUBSTANTIALLY SMOOTH SURFACE AREA THEREON; A LAYER OF RESISTANCE MATERIAL DEPOSITED ON SAID FLAT SURFACE OF SAID BASE MEMBER, SAID LAYER OF RESISTANCE MATERIAL HAVING A GAP THEREIN; AND A NON-CONDUCTIVE FILM DISPOSED IN SAID GAP, SAID FILM BEING OF SUBSTANTIALLY THE SAME THICKNESS AS SAID LAYER AND SO ARRANGED AS TO PROVIDE NARROW FISSURES ON EITHER SIDE THEREOF BETWEEN SAID NON-CONDUCTIVE FILM AND SAID RESISTANCE LAYER.
References Cited (Backward Citations)
US2082980A
Cited
FR1103756A
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US2704316A
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US2906984A
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US3044901A
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US3058842A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-13 | 1969-03-15 | 1969-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-13 | 1973-03-15 | 1973-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-13 | 1977-03-15 | 1977-09-14 | $7700.00 | Window Closed / Lapsed |