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US3598583A
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Indomethylene dye bases and their utilization in photographic processes and compositions
Assignee: Northrop Grumman Guidance and Electronics Co Inc
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Filing: 1968-08-09
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Granted: 1971-08-10
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Expires: 1988-08-09
Abstract
Abstract INDOMETHYLENE DYE BASES CONTAINING ONE OR MORE SUBSTITUTED OR UNSUBSTITUTED INDOLE NUCLEI INCLUDING ONE OR MORE OLEFINIC UNSATURATIONS IN THE FIVE-MEMBERED RING, I.R., DYE BASES CONTAINING INDOLINYL, INDOLENINYL, AND/OR INDOLYL RADICALS; PHOTOSENSITIVE COMPOSITIONS COMPRISING SUCH AN INDOMETHYLENE DYE BASE AND A FREE RADICAL GENERATING ORGANIC HALOGEN COMPOUND; IMAGING MEDIA HAVING ONE OR MORE PHOTOSENSITIVE LAYERS INCORPORATING A PHOTOSENSITIVE COMPOSITION THEREIN; DIRECT PRINT-OUT PROCESSES EM- PLOYING PHOTOSENSITIVE COMPOSITIONS AND IMAGING MEDIA FOR PRODUCING PHOTOGRAPHIC IMAGES.
Inventors
- 👤 Robert Hicks Sprague
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:57
CPC Classifications
C; C09; C09B; C09B23/00; C09B23/02; C09B23/08; C09B23/083; C09B23/0075; C09B23/04; C09B23/06; G; G03; G03C; G03C1/00; G03C1/675
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |