Patent US3331687A successfully refreshed from Google Patents.
US3331687A
Expired / Lapsed
US
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Electrophotographic material
Assignee: Render Belipa Fa GmbH
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Filing: 1962-09-24
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Granted: 1967-07-18
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Expires: 1982-09-24
Abstract
No abstract record available.
Inventors
- 👤 Kosche Horst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:49
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0601; G03G5/062; G03G5/0605; G03G5/0607; G03G5/0609; G03G5/0618; G03G5/0622; G03G5/0624; G03G5/0627; G03G5/0629; G03G5/0635; G03G5/0637; G03G5/0638; G03G5/0664; G03G5/0666; G03G5/0668
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
28 words
AN ELECTROPHOTOGRAPHIC REPRODUCTION MATERIAL, COMPRISING A SUPPORT AND A PHOTOCONDUCTIVE LAYER, WHEREIN THE PHOTOCONDUCTOR CONSISTS ESSENTIALLY OF AT LEAST ONE PHOTOCONDUCTIVE COMPOUND SELECTED FROM THE GROUP CONSISTING OF-
Claim 2
Dependent Claim
28 words
AN ELECTROPHOTOGRAPHIC REPRODUCTION MATERIAL, COMPRISING A SUPPORT AND A PHOTOCONDUCTIVE LAYER, WHEREIN THE PHOTOCONDUCTOR CONSISTS ESSENTIALLY OF AT LEAST ONE PHOTOCONDUCTIVE COMPOUND SELECTED FROM THE GROUP CONSISTING OF-
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |