Patent US3205365A successfully refreshed from Google Patents.
US3205365A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoelectric potentiometer actuated by position of a light spot
Assignee: DH Baldwin Co
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Filing: 1961-12-28
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Granted: 1965-09-07
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Expires: 1981-12-28
Abstract
No abstract record available.
Inventors
- 👤 Edward M Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:29
CPC Classifications
G; G01; G01D; G01D5/00; G01D5/12; G01D5/14; G01D5/16; G01D5/165
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A PHOTORESISTOR COMPRISING A BASE OF ELECTRICALLY INSULATING MATERIAL HAVING A SURFACE, AN ELONGATED ELECTRICAL CONDUCTOR HAVING A PAIR OF OPPOSITE SIDES SUPPORTED BY SAID SURFACE, A FIRST ELONGATED RESISTANCE ELEMENT DISPOSED SPACED FROM AND ADJACENT TO ONE OF THE SIDES OF THE ELECTRICAL CONDUCTOR, SAID FIRST ELEMENT HAVING A COEFFICIENT OF ELECTRICAL CONDUCTIVITY LESS THAN THAT OF THE CONDUCTOR, A SECOND ELONGATED RESITANCE ELEMENT DISPOSED SPACED FROM AND ADJACENT TO THE OTHER SIDE OF THE ELECTRICAL CONDUCTOR, SAID SECOND ELEMENT HAVING A COEFFICIENT OF ELECTRICAL CONDUCTIVITY APPROXIMATELY EQUAL TO THAT OF THE FIRST RESITANCE ELEMENT, AND A LAYER OF PHOTOCONDUCTIVE MATERIAL DISPOSED BETWEEN THE CONDUCTOR AND
Claim 2
Dependent Claim
107 words
A PHOTORESISTOR COMPRISING A BASE OF ELECTRICALLY INSULATING MATERIAL HAVING A SURFACE, AN ELONGATED ELECTRICAL CONDUCTOR HAVING A PAIR OF OPPOSITE SIDES SUPPORTED BY SAID SURFACE, A FIRST ELONGATED RESISTANCE ELEMENT DISPOSED SPACED FROM AND ADJACENT TO ONE OF THE SIDES OF THE ELECTRICAL CONDUCTOR, SAID FIRST ELEMENT HAVING A COEFFICIENT OF ELECTRICAL CONDUCTIVITY LESS THAN THAT OF THE CONDUCTOR, A SECOND ELONGATED RESITANCE ELEMENT DISPOSED SPACED FROM AND ADJACENT TO THE OTHER SIDE OF THE ELECTRICAL CONDUCTOR, SAID SECOND ELEMENT HAVING A COEFFICIENT OF ELECTRICAL CONDUCTIVITY APPROXIMATELY EQUAL TO THAT OF THE FIRST RESITANCE ELEMENT, AND A LAYER OF PHOTOCONDUCTIVE MATERIAL DISPOSED BETWEEN THE CONDUCTOR AND
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) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |