US3350595A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low dark current photoconductive device
Assignee: RCA Corp
•
Filing: 1965-11-15
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Granted: 1967-10-31
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Expires: 1985-11-15
Abstract
No abstract record available.
Inventors
- 👤 William M Kramer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:46
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/36; H01J29/39; H01J29/45; H01J29/451; H01J29/456; C; C23; C23C; C23C14/00; C23C14/22; C23C14/24; G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/043; G03G5/0433; G03G5/08; G03G5/082; G03G5/08207; H01J9/00; H01J9/20; H01J9/233; H10; H10F; H10F99/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A PHOTOCONDUCTIVE DEVICE HAVING A TARGET COMPRISING: (A) A CONDUCTING SIGNAL ELECTRODE MADE OF A MATERIAL OF N-TYPE CONDUCTIVITY, AND (B) A PHOTOCONDUCTIVE LAYER OVER SAID SIGNAL ELECTRODE, (1) SAID PHOTOCONDUCTIVE LAYER COMPRISING A VITREOUS ALLOY OF SELENIUM AND TELLURIUM, WHICH HAS A HIGHER PERCENTAGE OF TELLURIUM AT THE SURFACE PORTION THEREOF ADJACENT TO SAID SIGNAL ELECTRODE THAN AT THE OPPOSITE SURFACE PORTION THEREOF WHEREBY A BLOCKING JUNCTION IS FORMED BETWEEN SAID SIGNAL ELECTRODE AND SAID PHOTOCONDUCTIVE LAYER, FOR REDUCING THE DARK CURRENT OF SAID DEVICE.
Claim 2
Dependent Claim
86 words
A PHOTOCONDUCTIVE DEVICE HAVING A TARGET COMPRISING: (A) A CONDUCTING SIGNAL ELECTRODE MADE OF A MATERIAL OF N-TYPE CONDUCTIVITY, AND (B) A PHOTOCONDUCTIVE LAYER OVER SAID SIGNAL ELECTRODE, (1) SAID PHOTOCONDUCTIVE LAYER COMPRISING A VITREOUS ALLOY OF SELENIUM AND TELLURIUM, WHICH HAS A HIGHER PERCENTAGE OF TELLURIUM AT THE SURFACE PORTION THEREOF ADJACENT TO SAID SIGNAL ELECTRODE THAN AT THE OPPOSITE SURFACE PORTION THEREOF WHEREBY A BLOCKING JUNCTION IS FORMED BETWEEN SAID SIGNAL ELECTRODE AND SAID PHOTOCONDUCTIVE LAYER, FOR REDUCING THE DARK CURRENT OF SAID DEVICE.
References Cited (Backward Citations)
US3310700A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-30 | 1971-05-01 | 1971-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-30 | 1975-05-01 | 1975-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-30 | 1979-05-01 | 1979-10-31 | $7700.00 | Window Closed / Lapsed |