Patent US3672888A successfully refreshed from Google Patents.
US3672888A
Expired / Lapsed
US
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Process for the manufacture of an electrophotographic sensitive material
Assignee: Tomoegawa Paper Manufacturing Co Ltd
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Filing: 1970-03-02
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Granted: 1972-06-27
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Expires: 1990-03-02
Abstract
Abstract AN ELECTROPHOTOGRAPHIC SENSITIVE MATERIAL WHEREIN A REACTION PRODUCT OF SYNTHETIC RESIN HAVING OH-GROUPS AND A CHROMIUM COMPOUND IS INTERPOSED AS AN INTERMEDIATE LAYER BETWEEN A PHOTOCONDUCTIVE IMAGE-FORMING LAYER AND A SUPPORT, SUCH AS PAPER, PLASTIC SHEET, THIN METALLIC FILM AND THE LIKE AND A PROCESS FOR THE MANUFACTURE THEREOF.
Inventors
- 👤 Haruo Hasegawa
- 👤 Kinroku Sugiyama
- 👤 Kikuji Suzuki
- 👤 Kunio Hirano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:10
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/14; G03G5/142; G03G5/144; G03G13/00; G03G13/26; G03G13/28; G03G5/10; G03G5/104
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |