Patent US3247390A successfully refreshed from Google Patents.
US3247390A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroluminescent device
Assignee: RCA Corp
•
Filing: 1955-12-01
•
Granted: 1966-04-19
•
Expires: 1975-12-01
Abstract
No abstract record available.
Inventors
- 👤 Kazan Benjamin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:01
CPC Classifications
H; H05; H05B; H05B33/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
AN ELECTROLUMINESCENT DEVICE COMPRISING TWO PHOTOCONDUCTIVE ELEMENTS, AT LEAST ONE OF SAID PHOTOCONDUCTIVE ELEMENTS BEING EXPOSED TO RADIANT ENERGY FROM A DIRECTION EXTERNAL OF SAID DEVICE, AN ELECTROLUMINESCENT ELEMENT, AT LEAST ONE OF SAID PHOTOCONDUCTIVE ELEMENTS BEING EXPOSED TO RADIANT ENERGY FROM SAID ELECTROLUMINESCENT ELEMENT, AND LOW IMPEDANCE MEANS DIRECTLY CONNECTING ONE SIDE OF SAID ELECTROLUMINESCENT ELEMENT AND ONE SIDE OF EACH OF SID PHOTOCONDUCTIVE ELEMENTS TOGETHER.
Claim 2
Dependent Claim
67 words
AN ELECTROLUMINESCENT DEVICE COMPRISING TWO PHOTOCONDUCTIVE ELEMENTS, AT LEAST ONE OF SAID PHOTOCONDUCTIVE ELEMENTS BEING EXPOSED TO RADIANT ENERGY FROM A DIRECTION EXTERNAL OF SAID DEVICE, AN ELECTROLUMINESCENT ELEMENT, AT LEAST ONE OF SAID PHOTOCONDUCTIVE ELEMENTS BEING EXPOSED TO RADIANT ENERGY FROM SAID ELECTROLUMINESCENT ELEMENT, AND LOW IMPEDANCE MEANS DIRECTLY CONNECTING ONE SIDE OF SAID ELECTROLUMINESCENT ELEMENT AND ONE SIDE OF EACH OF SID PHOTOCONDUCTIVE ELEMENTS TOGETHER.
References Cited (Backward Citations)
US2773992A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-18 | 1969-10-18 | 1970-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-18 | 1973-10-18 | 1974-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-18 | 1977-10-18 | 1978-04-19 | $7700.00 | Window Closed / Lapsed |