Patent US2927497A successfully refreshed from Google Patents.
US3268764A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation sensitive device
Assignee: Westinghouse Electric Corp
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Filing: 1963-01-09
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Granted: 1966-08-23
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Expires: 1983-01-09
Abstract
No abstract record available.
Inventors
- 👤 Robert A Simms
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:16
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/08; H01J31/26; H01J31/28; H01J31/34; H01J31/38; H01J29/00; H01J29/02; H01J29/10; H01J29/36; H01J29/39
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
A RADIATION SENSITIVE DEVICE COMPRISING A LAYER OF RADIATION SENSITIVE MATERIAL, SAID RADIATION SENSITIVE FILM EXHIBITING THE PROPERTY OF CHANGE IN ELECTRICAL CONDUCTIVITY IN RESPONSE TO RADIATION, AN ELECTRICALLY CONDUCTIVE LAYER AND A FILM OF INSULATING MATERIAL SANDWICHED BETWEEN SAID CONDUCTIVE LAYER AND SAID RADIATION SENSITIVE LAYER, AN ELECTRON BEAM FOR SCANNING THE EXPOSED SURFACE OF SAID RADIATION SENSITIVE MATERIAL SO AS TO SUBSTANTIALLY MAINTAIN THE SURFACE THEREOF AT AN EQUILIBRIUM POTENTIAL, MEANS FOR ESTABLISHING A POTENTIAL ON SAID ELECTRICALLY CONDUCTIVE LAYER DIFFERENT FROM SAID EQUILIBUM PATENTIAL TO ESTABLISH A FIELD ACROSS SAID RADIATION SENSITIVE MATERIAL AND SAID FILM OF INSULATING MATERIAL, SAID FILM OF INSULATING MATERIAL BEING NON-REPSONSIVE TO RADIATIONS TO WHICH THE RADIATION SENSITIVE DEVICE IS ADAPTED FOR USE.
Claim 2
Dependent Claim
121 words
A RADIATION SENSITIVE DEVICE COMPRISING A LAYER OF RADIATION SENSITIVE MATERIAL, SAID RADIATION SENSITIVE FILM EXHIBITING THE PROPERTY OF CHANGE IN ELECTRICAL CONDUCTIVITY IN RESPONSE TO RADIATION, AN ELECTRICALLY CONDUCTIVE LAYER AND A FILM OF INSULATING MATERIAL SANDWICHED BETWEEN SAID CONDUCTIVE LAYER AND SAID RADIATION SENSITIVE LAYER, AN ELECTRON BEAM FOR SCANNING THE EXPOSED SURFACE OF SAID RADIATION SENSITIVE MATERIAL SO AS TO SUBSTANTIALLY MAINTAIN THE SURFACE THEREOF AT AN EQUILIBRIUM POTENTIAL, MEANS FOR ESTABLISHING A POTENTIAL ON SAID ELECTRICALLY CONDUCTIVE LAYER DIFFERENT FROM SAID EQUILIBUM PATENTIAL TO ESTABLISH A FIELD ACROSS SAID RADIATION SENSITIVE MATERIAL AND SAID FILM OF INSULATING MATERIAL, SAID FILM OF INSULATING MATERIAL BEING NON-REPSONSIVE TO RADIATIONS TO WHICH THE RADIATION SENSITIVE DEVICE IS ADAPTED FOR USE.
References Cited (Backward Citations)
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US2997614A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-22 | 1970-02-21 | 1970-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-22 | 1974-02-21 | 1974-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-22 | 1978-02-21 | 1978-08-23 | $7700.00 | Window Closed / Lapsed |