US2853383A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for amplifying photoelectric currents
Assignee: Individual
•
Filing: 1953-10-02
•
Granted: 1958-09-23
•
Expires: 1973-10-02
Abstract
No abstract record available.
Inventors
- 👤 Paul H Keck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:08
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A METHOD OF PRACTICING ELECTROSTATIC ELETROPHOTROGRAPHY COMPRISING PREPARING A PHOTOCONDUCTIVE INSULATING LAYER, EXPOSING THE LAYER TO A PHOTOGRAPHIC IMAGE AND SUBJECTING SAID LAYER TO A SINGLE HIGH VOLTAGE PULSE SYNCHORONIZED WITH SAID EXPOSURE, SAID PULSE BEING OF SUFFICEINT MAGNITUDE BUT OF INSUFFICIENT DURATION TO CAUSE BREAKDOWN OF SAID LAYER APPROACHING IN INTENSITY THAT WHICH WOULD CAUSE BREAKDOWN OF THE INSULATION OF THE LAYER WHEREBY PRIMARY ELECTRONS GENERATED BY SAID
Claim 2
Independent Claim
69 words
A METHOD OF PRACTICING ELECTROSTATIC ELETROPHOTROGRAPHY COMPRISING PREPARING A PHOTOCONDUCTIVE INSULATING LAYER, EXPOSING THE LAYER TO A PHOTOGRAPHIC IMAGE AND SUBJECTING SAID LAYER TO A SINGLE HIGH VOLTAGE PULSE SYNCHORONIZED WITH SAID EXPOSURE, SAID PULSE BEING OF SUFFICEINT MAGNITUDE BUT OF INSUFFICIENT DURATION TO CAUSE BREAKDOWN OF SAID LAYER APPROACHING IN INTENSITY THAT WHICH WOULD CAUSE BREAKDOWN OF THE INSULATION OF THE LAYER WHEREBY PRIMARY ELECTRONS GENERATED BY SAID
References Cited (Backward Citations)
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US2297691A
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US2277013A
Cited
US2551582A
Cited
US2692178A
Cited
US2663636A
Cited
US2650310A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-22 | 1962-03-24 | 1962-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-22 | 1966-03-24 | 1966-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-22 | 1970-03-24 | 1970-09-23 | $7700.00 | Window Closed / Lapsed |