US3986873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photosensitive polymeric materials comprising poly-n-vinylphenoxazine and poly-n-vinylphenothiazine
Assignee: Individual
•
Filing: 1975-01-31
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Granted: 1976-10-19
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Expires: 1995-01-31
Abstract
Abstract A photosensitive polymeric material having photoelectric properties based on poly-N-vinylamines, which actually comprise poly-N-vinyldiphenylamine, its derivatives, and also copolymers of N-vinyldiphenylamine with N-vinylamines, poly-N-vinylphenothiazine and poly-N-vinylphenoxazine. The polymers are applied onto an electroconductive substrate to give an electrophotographic material. Said polymers are prepared by a method consisting in the interaction between secondary aromatic and heterocyclic amines or their mixtures with simple vinyl ethers in the presence of strong acids or with vinyl acetate in the presence of salts of mercury (II) or lead (IV), a strong acid and water.
Inventors
- 👤 Ekaterina Egorovna Sirotkina
- 👤 Vadim Petrovich Lopatinsky
- 👤 Viktor Dmitrievich Filimonov
- 👤 Rita Moiseevna Kogan
- 👤 Vyacheslav Dmitrievich Pirogov
- 👤 Sofya Ivanovna Kudinova
- 👤 Ljubov Sergeevna Sizova
- 👤 Svetlana Stepanovna Reznikova
- 👤 Georgy Nikolaevich Ivanov
- 👤 Nina Alexandrovna Tsekhanovskaya
- 👤 Jonas-Donatos Bronyaus Sidaravichus
- 👤 Larisa Vasilievna Randina
- 👤 Svetlana Leonidovna Bocharova
- 👤 Galina Petrovna Gulyaeva
- 👤 Raisa Ivanovna Bondarenko
- 👤 Galina Ivanovna Rybalko
- 👤 Yanina Antono Adomanite
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:50
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/07; G03G5/071; G03G5/072; G03G5/073
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
28 words
An electrophotographic material comprising an electroconductive substrate and a polymer film coated on said substrate wherein said polymer is selected from the group consisting of poly-N-vinylphenoxazine and poly-N-vinylphenothiazine.
Claim 2
Dependent Claim
28 words
An electrophotographic material comprising an electroconductive substrate and a polymer film coated on said substrate wherein said polymer is selected from the group consisting of poly-N-vinylphenoxazine and poly-N-vinylphenothiazine.
Claim 3
Dependent Claim
20 words
An electrophotographic material according to claim 1 wherein the polymer is poly-N-vinylphenoxazine having a molecular weight of 1000 to 3000.
Claim 4
Dependent Claim
20 words
An electrophotographic material according to claim 1 wherein the polymer is poly-N-vinylphenothiazine having a molecular weight of 1000 to 3000.
References Cited (Backward Citations)
SU332099A1
Cited
US3544318A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-10-19 | 1980-04-19 | 1980-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-19 | 1984-04-19 | 1984-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-19 | 1988-04-19 | 1988-10-19 | $7700.00 | Window Closed / Lapsed |