Patent US2875703A successfully refreshed from Google Patents.
Patent US2940848A successfully refreshed from Google Patents.
US2940848A
Expired / Lapsed
US
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Photoconductive layer for recording element and method of producing same
Assignee: GAF Chemicals Corp
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Filing: 1959-03-11
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Granted: 1960-06-14
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Expires: 1979-03-11
Abstract
No abstract record available.
Inventors
- 👤 Kostelec Joze
- 👤 Heinz F Nitka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:11
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/043; G03G5/0436; G03G5/06; G03G5/0622; G03G5/0624; G03G5/0627; G03G5/0631; G03G5/08; G03G5/087; G03G5/10; G03G5/101
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
23 words
AN ELECTROPHOTOGRAPHIC MEMBER COMPRISING A BASE HAVING APPLIED THEREON A PRETREATMENT OF A SURFACE ACTIVE HIGH MOLECULAR WEIGHT IMIDAZOLINE OF THE FOLLOWING FORMULA:
Claim 2
Dependent Claim
23 words
AN ELECTROPHOTOGRAPHIC MEMBER COMPRISING A BASE HAVING APPLIED THEREON A PRETREATMENT OF A SURFACE ACTIVE HIGH MOLECULAR WEIGHT IMIDAZOLINE OF THE FOLLOWING 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) | 1963-06-14 | 1963-12-14 | 1964-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-14 | 1967-12-14 | 1968-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-14 | 1971-12-14 | 1972-06-14 | $7700.00 | Window Closed / Lapsed |