Patent US3625698A successfully refreshed from Google Patents.
US3625698A
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Light-sensitive silver halide photographic material sensitized with a thiohydantoin nucleus containing dye
Assignee: Konica Minolta Inc
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Filing: 1968-06-14
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Granted: 1971-12-07
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Expires: 1988-06-14
Abstract
Abstract THE PHOTOGRAPHIC MATERIAL EMULSION LAYER CONTAINS A SENSITIZING DYE. THE DYE HAS THE FORMULA: 1-(R1-(CH2)N-,2-(S=),3-R2,4-(O=),5-((-N(-R)-Z-)>C=CH-CH=) IMIDAZOLIDINE WHERIN R IS AN ALKYL GROUP, A CARBOXY ALKYL GROUP OR A SULFO ALKYL GROUP; R1 IS HYDROXY, CYANO, ALKOXY, CARBOXY, ACYLOXY OR CARBAMOYL; N IS A INTEGER OF 2 TO 3; R2 IS A SUBSTITUTED OR UNSUBSTITUTED ALKYL, ARYL, ALKENYL OR ARALKYL; AND Z MEANS AN ATOMIC GROUPING CAPABLE OF FORMING, TOGETHER WITH THE ADJACENT NITROGEN AND CARBON ATOMS, A BENZOXAZOLE RING, A NAPHTHO-OXAZOLE RING, A THIAZOLE RING, AND INDOLENINE RING OR A QUINOLINE RING.
Inventors
- 👤 Kaiichiro Sakazume
- 👤 Shigemasa Itoh
- 👤 Shui Sato
- 👤 Eiichi Sakamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:58
CPC Classifications
C; C09; C09B; C09B23/00; C09B23/10; C09B23/105
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) | 1974-12-06 | 1975-06-07 | 1975-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-06 | 1979-06-07 | 1979-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-06 | 1983-06-07 | 1983-12-07 | $7700.00 | Window Closed / Lapsed |