Patent US3203795A successfully refreshed from Google Patents.
US3203795A
Expired / Lapsed
US
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Photoconductive layers for electrophotography
Assignee: Agfa Gevaert NV
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Filing: 1959-02-25
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Granted: 1965-08-31
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Expires: 1979-02-25
Abstract
No abstract record available.
Inventors
- 👤 Schaum Gustav
- 👤 Haydn Hildegard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:11
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0622; G03G5/0624; G03G5/0627; G03G5/0631; G03G5/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
A PHOTOCONDUCTIVE SHEET MATERIAL FOR ELECTROPHOTOGRAPHY COMPRISING A PHOTOCONDUCTIVE LAYER HAVING DISPERSED IN AN INSULATING FILM-FORMING RESINOUS BINDER A PHOTOCONDUCTIVE ZINC OXIDE, THE LATTER BEING SENSITIZED BY A PHENOL SULFONE PHTHALEIN HAVING THE FORMULA
Claim 2
Dependent Claim
34 words
A PHOTOCONDUCTIVE SHEET MATERIAL FOR ELECTROPHOTOGRAPHY COMPRISING A PHOTOCONDUCTIVE LAYER HAVING DISPERSED IN AN INSULATING FILM-FORMING RESINOUS BINDER A PHOTOCONDUCTIVE ZINC OXIDE, THE LATTER BEING SENSITIZED BY A PHENOL SULFONE PHTHALEIN HAVING THE FORMULA
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) | 1968-08-30 | 1969-03-01 | 1969-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-30 | 1973-03-01 | 1973-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-30 | 1977-03-01 | 1977-08-31 | $7700.00 | Window Closed / Lapsed |