US2886434A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protected photoconductive element and method of making same
Assignee: Horizons Inc
•
Filing: 1955-06-06
•
Granted: 1959-05-12
•
Expires: 1975-06-06
Abstract
No abstract record available.
Inventors
- 👤 Owens Lloyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:00
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/043; G03G5/0433; G03G5/14; G03G5/147; G03G5/14704
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A PHOTOCONDUCTIVE MEMBER FOR USE IN ELECTROSTATIC PHOTOGRAPHY CONSISTING OF (A) AN ELECTRICALLY CONDUCTIVE SUPPORT LAYER; (B) AN INTERMEDIATE LAYER OF PHOTOCONDUCTIVE MATERIAL HAVING A RESISTIVITY IN THE DARK OF AT LEAST ABOUT 1012OHM CENTIMETERS AND A RESISTANCE DECREASE FACTOR OF AT LEAST ABOUT 100 WHEN ILLUMINATED, INTEGRAL WITH SAID ELECTRICALY CONDUCTIVE LAYER AND SUPPORTED THEREON; AND (C) A PROTECTIVE TRANSPARENT HOMOGENEOUS COATING BETWEEN 0.01 AND 0.1 MIL THICK. INTEGRAL WITH
Claim 2
Dependent Claim
71 words
A PHOTOCONDUCTIVE MEMBER FOR USE IN ELECTROSTATIC PHOTOGRAPHY CONSISTING OF (A) AN ELECTRICALLY CONDUCTIVE SUPPORT LAYER; (B) AN INTERMEDIATE LAYER OF PHOTOCONDUCTIVE MATERIAL HAVING A RESISTIVITY IN THE DARK OF AT LEAST ABOUT 1012OHM CENTIMETERS AND A RESISTANCE DECREASE FACTOR OF AT LEAST ABOUT 100 WHEN ILLUMINATED, INTEGRAL WITH SAID ELECTRICALY CONDUCTIVE LAYER AND SUPPORTED THEREON; AND (C) A PROTECTIVE TRANSPARENT HOMOGENEOUS COATING BETWEEN 0.01 AND 0.1 MIL THICK. INTEGRAL WITH
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-11 | 1962-11-10 | 1963-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-11 | 1966-11-10 | 1967-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-11 | 1970-11-10 | 1971-05-12 | $7700.00 | Window Closed / Lapsed |