US3306743A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrophotographic compositions, recording elements and process employing shellac
Assignee: Mead Corp
•
Filing: 1962-12-12
•
Granted: 1967-02-28
•
Expires: 1982-12-12
Abstract
No abstract record available.
Inventors
- 👤 Frederick W Sanders
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:56
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/05; G03G5/0528; G03G5/08; G03G5/087; G03G5/09
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
34 words
A PHOTOCONDUCTIVE LAYER COMPRISING DISCRETE PARTICLES OF AN INORGANIC PHOTOCONDUCTIVE PIGMENT, AN ELECTRICALLY INSULATING FILM-FORMING BINDER THEREFOR AND 0.25 TO 10.0% OF SHELLAC BASED ON THE COMBINED WEIGHT OF SAID PIGMENT AND SAID BINDER.
References Cited (Backward Citations)
US2311911A
Cited
US3052539A
Cited
US3052540A
Cited
US3219606A
Cited
US2961420A
Cited
US2972592A
Cited
US3061564A
Cited
US3159483A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |