Patent US3674476A successfully refreshed from Google Patents.
US3674476A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing photoconductive layer for electrophotography
Assignee: Fujifilm Holdings Corp
•
Filing: 1970-06-16
•
Granted: 1972-07-04
•
Expires: 1990-06-16
Abstract
Abstract A PROCESS OF PRODUCING A PHOTOCONDUCTIVE ELEMENT FOR ELECTROPHOTOGRAPHY WHICH COMPRISES HEATING ZINC HYDROXIDE OR BASIC CINZ CARBONATE IN THE PRESENCE OF WATER AND UNDER ELEVATED PRESSURE TO OBTAIN ZINC OXIDE, DISPERSING THE ZINC OXIDE INTO AN APPROPIATE INSULATING RESIN AND APPLYING THE DISPERSION ONTO AN ELECTROCONDUCTIVE SUPPORT MATERIAL.
Inventors
- 👤 Yasuo Tamai
- 👤 Hajime Miyazuka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:26
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/08; G03G5/087
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |