US3552973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light sensitive hexaarylbiimidazole/p- aminophenyl ketone compositions
Assignee: EIDP Inc
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Filing: 1967-07-20
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Granted: 1971-01-05
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Expires: 1987-07-20
Abstract
Abstract PHOTOACTIVATIBLE COMPOSITIONS COMPRISING, BASICALLY A HEXAARYLBIMIDAZOLE AND SELECTED P-AMINOPHENYL KETONES HAVING ABSORPTION MAXIMALLY IN THE NEAR ULTRAVIOLET REGION. THE BASIC COMPOSITION CAN BE COMBINED WITH A LEUCO DYE ALONE OR WITH A LEUCO DYE AND AN IMAGE FIXING SYSTEM. THE COMPOSITIONS MAY BE EMPLOYED WITH INERT SOLVENTS, PLASTICIZERS AND/OR BINDERS.
Inventors
- 👤 David Henry Fishman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:45
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/72; G03C1/73; G03C1/732
Claims Analysis
Total Claims: 0
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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) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |