US3268332A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrophotographic element
Assignee: Northrop Grumman Guidance and Electronics Co Inc
•
Filing: 1962-05-25
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Granted: 1966-08-23
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Expires: 1982-05-25
Abstract
No abstract record available.
Inventors
- 👤 Paul J Caruso
- 👤 Richard P Flynn
- 👤 Gerald L Mcleod
- 👤 David S Most
- 👤 Herbert N Schlein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:29
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/05; G03G5/0528; G03G5/0532; G03G5/0535; G03G5/0539; G03G5/0546; G03G5/0557; G03G5/056; Y; Y10; Y10S; Y10S525/00; Y10S525/904
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
IN A RADIATION RESPONSIVE IMGE FORMING MEDIUM COMPRISING A SUBSTRATE HAVING THEREON A PHOTOCONDUCTIVE INSULTING COATING COMPRISING PHOTOCONDUCTIVE PARTICLES IN AN ELECTRICALLY INSULATING BINDER MATRIX THEREFOR, THE IMPROVEMENT IN WHICH SAID BINDER COMPRISES, IN COMBINATION, (A) AT LEAST ABOUT 50 PERCENT BU WEIGHT OF A MEMBER OF THE GROUP CONSISTING OF A HOMOPOLYMER OF STYRENE A BINARY COPOLYMER OF STYRENE AND A DIOLEFINIC COMONOMER, AND A TERNARY COPOLYMER OF STYRENE, A DIOLEFINIC COMONOMER, AND ACRYLONITRILE, (B) AT LEAST ABOUT 25 PERCENT OF A MEMBER OF THE GROUP CONSISTING OF A HOMOPOLYMER OF VINYLIDENE CHLORIDE AND A COPOLYMER OF VINYLIDENE CHLORIDE WITH ACRYLONITRILE, AND (C) AT LEAST 1/2 PERCENT OF AN ALKYD RESIN.
Claim 2
Dependent Claim
112 words
IN A RADIATION RESPONSIVE IMGE FORMING MEDIUM COMPRISING A SUBSTRATE HAVING THEREON A PHOTOCONDUCTIVE INSULTING COATING COMPRISING PHOTOCONDUCTIVE PARTICLES IN AN ELECTRICALLY INSULATING BINDER MATRIX THEREFOR, THE IMPROVEMENT IN WHICH SAID BINDER COMPRISES, IN COMBINATION, (A) AT LEAST ABOUT 50 PERCENT BU WEIGHT OF A MEMBER OF THE GROUP CONSISTING OF A HOMOPOLYMER OF STYRENE A BINARY COPOLYMER OF STYRENE AND A DIOLEFINIC COMONOMER, AND A TERNARY COPOLYMER OF STYRENE, A DIOLEFINIC COMONOMER, AND ACRYLONITRILE, (B) AT LEAST ABOUT 25 PERCENT OF A MEMBER OF THE GROUP CONSISTING OF A HOMOPOLYMER OF VINYLIDENE CHLORIDE AND A COPOLYMER OF VINYLIDENE CHLORIDE WITH ACRYLONITRILE, AND (C) AT LEAST 1/2 PERCENT OF AN ALKYD RESIN.
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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) | 1969-08-22 | 1970-02-21 | 1970-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-22 | 1974-02-21 | 1974-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-22 | 1978-02-21 | 1978-08-23 | $7700.00 | Window Closed / Lapsed |