Patent US3072479A successfully refreshed from Google Patents.
US3072479A
Expired / Lapsed
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Electrophotographic plates comprising solid solutions of oxazolones
Assignee: Azoplate Corp
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Filing: 1957-05-29
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Granted: 1963-01-08
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Expires: 1977-05-29
Abstract
No abstract record available.
Inventors
- 👤 Bethe Gunther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:09
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0622; G03G5/0624; G03G5/0627; G03G5/0631; C; C07; C07D; C07D263/00; C07D263/02; C07D263/30; C07D263/34; C07D263/36; C07D263/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
27 words
AN ELECTOPHOTOGRAPHIC MATERIAL COMPRISING AN ELECTRICALLY CONDUCTIVE SUPPORT LAYER AND A PHOTOCONDUCTIVE INSULATING LAYER, THE LATTER COMPRISING A SOLID SOLUTION OF A 2-ARYL-4-ARYLIDENE-OXAZOLONE IN AN INSULATING RESIN.
Claim 2
Dependent Claim
27 words
AN ELECTOPHOTOGRAPHIC MATERIAL COMPRISING AN ELECTRICALLY CONDUCTIVE SUPPORT LAYER AND A PHOTOCONDUCTIVE INSULATING LAYER, THE LATTER COMPRISING A SOLID SOLUTION OF A 2-ARYL-4-ARYLIDENE-OXAZOLONE IN AN INSULATING RESIN.
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US2663636A
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US2825814A
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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) | 1966-01-07 | 1966-07-09 | 1967-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-07 | 1970-07-09 | 1971-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-07 | 1974-07-09 | 1975-01-08 | $7700.00 | Window Closed / Lapsed |