Patent US3553009A successfully refreshed from Google Patents.
US3553009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of preparing an electro-photographic material
Assignee: Battelle Memorial Institute Inc
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Filing: 1970-01-09
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Granted: 1971-01-05
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Expires: 1990-01-09
Abstract
Abstract A PROCESS FOR PREPARING A PHOTOCONDUCTIVE MATERIAL WHICH COMPRISES CONTACTING AN ORGANIC POLYMERIC RESINOUS FILM WITH AN IMPREGNATION AGENT COMPRISING A PHOTOSENSITIZING MATERIAL IS DISCLOSED.
Inventors
- 👤 Helmut Hoegl
- 👤 Giacomo Barchietto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:41
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/05; G03G5/0503; G03G5/051; G03G5/0517; G03G5/0525; G03G5/06; G03G5/0601; G03G5/0612; G03G5/0614; G03G5/06142; G03G5/0622; G03G5/0624; G03G5/0627; G03G5/0629; G03G5/0633; G03G5/07; G03G5/09
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) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |