Patent US4032405A successfully refreshed from Google Patents.
Patent US3146101A successfully refreshed from Google Patents.
US3146101A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sensitization of photoconductive copysheets
Assignee: 3M Co
•
Filing: 1962-05-31
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Granted: 1964-08-25
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Expires: 1982-05-31
Abstract
No abstract record available.
Inventors
- 👤 Byron W Neher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:45
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/09; G03G5/06; G03G5/0622; G03G5/0624; G03G5/0635; G03G5/0637
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
IN A COPYSHEET HAVING A PHOTOCONDUCTIVE ZINC OXIDE THEREIN THE IMPROVEMENT WHICH COMPRISES FROM ABOUT 1 TO ABOUT 2,000 PARTS BY WEIGHT OF AN AMINO COUMARIN PER 40,000 PARTS OF SAID PHOTOCONDUCTOR, SAID AMINO COUMARIN BEING INTIMATELY ADMIXED WITH SAID PHOTOCONDUCTOR.
Claim 2
Dependent Claim
41 words
IN A COPYSHEET HAVING A PHOTOCONDUCTIVE ZINC OXIDE THEREIN THE IMPROVEMENT WHICH COMPRISES FROM ABOUT 1 TO ABOUT 2,000 PARTS BY WEIGHT OF AN AMINO COUMARIN PER 40,000 PARTS OF SAID PHOTOCONDUCTOR, SAID AMINO COUMARIN BEING INTIMATELY ADMIXED WITH SAID PHOTOCONDUCTOR.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-25 | 1968-02-24 | 1968-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-25 | 1972-02-24 | 1972-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-25 | 1976-02-24 | 1976-08-25 | $7700.00 | Window Closed / Lapsed |