Patent US3344280A successfully refreshed from Google Patents.
US3344280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroluminescent-photoconductive display with long persistence
Assignee: General Precision Inc
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Filing: 1966-08-04
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Granted: 1967-09-26
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Expires: 1986-08-04
Abstract
No abstract record available.
Inventors
- 👤 Richard A Martel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:48
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A PERSISTENT RADIATION-RESPONSIVE MEMORY UNIT FOR STORAGE AND REPRODUCTION OF IMAGES FORMED BY INCIDENT RADIATION COMPRISING: RADITAION-RESPONSIVE PHOSPHORESCENT MATERIAL HAVING LATENT PHOTOCONDUCTIVITY STORAGE CHARACTERISTICS FOR PRODUCING, WITHIN SAID MATERIAL, AN IMPEDANCE IMAGE CORRESPONDING TO THE INTENSITY OF INCIDENT RADIATION; AND SENSING MATERIAL COUPLED TO SAID RADIATION-RESPONSIVE PHOSPHORESCENT MATERIAL AND RESPONSIVE TO IMPEDANCE CHANGES IN SAID MATERIAL FOR DISPLAYING SAID IMPEDANCE IMAGE BOTH CONTINUOUSLY AND INTERMITTENTLY DURING THE EXISTENCE OF SAID IMPEDANCE IMAGE.
Claim 2
Dependent Claim
72 words
A PERSISTENT RADIATION-RESPONSIVE MEMORY UNIT FOR STORAGE AND REPRODUCTION OF IMAGES FORMED BY INCIDENT RADIATION COMPRISING: RADITAION-RESPONSIVE PHOSPHORESCENT MATERIAL HAVING LATENT PHOTOCONDUCTIVITY STORAGE CHARACTERISTICS FOR PRODUCING, WITHIN SAID MATERIAL, AN IMPEDANCE IMAGE CORRESPONDING TO THE INTENSITY OF INCIDENT RADIATION; AND SENSING MATERIAL COUPLED TO SAID RADIATION-RESPONSIVE PHOSPHORESCENT MATERIAL AND RESPONSIVE TO IMPEDANCE CHANGES IN SAID MATERIAL FOR DISPLAYING SAID IMPEDANCE IMAGE BOTH CONTINUOUSLY AND INTERMITTENTLY DURING THE EXISTENCE OF SAID IMPEDANCE IMAGE.
References Cited (Backward Citations)
US2835822A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |