US3089056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Storage tube
Assignee: Raytheon Co
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Filing: 1960-02-16
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Granted: 1963-05-07
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Expires: 1980-02-16
Abstract
No abstract record available.
Inventors
- 👤 Norman H Lehrer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:40
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/36; H01J29/39; H01J29/395; H01J31/00; H01J31/08; H01J31/10; H01J31/12; H01J31/18; Y; Y10; Y10S; Y10S313/00; Y10S313/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
A HALF-TONE VISUAL DISPLAY STORAGE TUBE COMPRISING A STORAGE SCREEN INCLUDING A CONDUCTIVE SCREEN AND A UNIFORMLY THIN LAYER OF CUBIC ZINC SULFIDE DISPOSED OVER AT LEAST A PORTION OF ONE SIDE OF SAID CONDUCTIVE SCREEN, SAID CUBIC ZINC SULFIDE HAVING A SECONDARY EMISSION RATIO GREATER THAN UNITY THROUGHOUT A FIRST CONTINUOUS RANGE OF ELECTRON ENERGY LEVELS FROM A FIRST CROSSOVER POTENTIAL LEVEL TO A SECOND CROSSOVER POTENTIAL LEVEL RELATIVE TO A PREDETERMINED REFERENCE POTENTIAL LEVEL AND EXHIBITING ELECTRON BOMBARDMENT INDUCED CONDUCTIVITY CHARACTERISTICS THROUGHOUT A SECOND RANGE OF ELECTRON ENERGY LEVELS WHICH SUBSTANTIALLY OVERLAPS SAID FIRST RANGE: A VIEWING SCREEN DISPOSED ADJACENT TO AND COEXTENSIVE WITH SAID STORAGE SCREEN ON THE SIDE THEREOF OPPOSITE FROM SAID ONE SIDE OF SAID CONDUCTIVE SCREEN; MEANS FOR MAINTAINING SAID CONDUCTIVE SCREEN POSITIVE WITH RESPECT TO THE POTENTIAL OF SAID STORAGE SURFACE BY AN AMOUNT LESS THAN THE POTENTIAL DIFFERENCE BETWEEN SAID FIRST CROSSOVER POTENTIAL AND SAID
Claim 2
Dependent Claim
153 words
A HALF-TONE VISUAL DISPLAY STORAGE TUBE COMPRISING A STORAGE SCREEN INCLUDING A CONDUCTIVE SCREEN AND A UNIFORMLY THIN LAYER OF CUBIC ZINC SULFIDE DISPOSED OVER AT LEAST A PORTION OF ONE SIDE OF SAID CONDUCTIVE SCREEN, SAID CUBIC ZINC SULFIDE HAVING A SECONDARY EMISSION RATIO GREATER THAN UNITY THROUGHOUT A FIRST CONTINUOUS RANGE OF ELECTRON ENERGY LEVELS FROM A FIRST CROSSOVER POTENTIAL LEVEL TO A SECOND CROSSOVER POTENTIAL LEVEL RELATIVE TO A PREDETERMINED REFERENCE POTENTIAL LEVEL AND EXHIBITING ELECTRON BOMBARDMENT INDUCED CONDUCTIVITY CHARACTERISTICS THROUGHOUT A SECOND RANGE OF ELECTRON ENERGY LEVELS WHICH SUBSTANTIALLY OVERLAPS SAID FIRST RANGE: A VIEWING SCREEN DISPOSED ADJACENT TO AND COEXTENSIVE WITH SAID STORAGE SCREEN ON THE SIDE THEREOF OPPOSITE FROM SAID ONE SIDE OF SAID CONDUCTIVE SCREEN; MEANS FOR MAINTAINING SAID CONDUCTIVE SCREEN POSITIVE WITH RESPECT TO THE POTENTIAL OF SAID STORAGE SURFACE BY AN AMOUNT LESS THAN THE POTENTIAL DIFFERENCE BETWEEN SAID FIRST CROSSOVER POTENTIAL AND SAID
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) | 1966-05-06 | 1966-11-05 | 1967-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-06 | 1970-11-05 | 1971-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-06 | 1974-11-05 | 1975-05-07 | $7700.00 | Window Closed / Lapsed |