Development of silver halide photographic materials
Abstract
Abstract A METHOD FOR THE DEVELOPMENT OF SILVER HALIDE PHOTOGRAPHIC LIGHT-SENSITIVE MATERIALS, WHICH COMPRISES DEVELOPING A SILVER HALIDE PHOTOGRAPHIC MATERIAL IN THE PRESENCE OF A COMPOUND REPRESENTED BY THE FOLLOWING GENERAL FORMULA R-O-(CH2-CH(-O-CH2-CH(-OH)-CH2-N+<(-Z-))-CH2-O)X-(CH2- CH(-OH)-CH2-O)Y-H. X X(-) IN WHICH R IS SELECTED FROM THE GROUP CONSISTING OF A HYDROGEN ATOM AND R''CO-, WHEREIN R'' IS SELECTED FROM THE GROUP CONSISTING OF A HYDROGEN ATOM, AN ALKYL GROUP, A SUBSTITUTED ALKYL GROUP, AN ARYL GROUP AND A SUBSTITUTED ARYL GROUP, WHEREIN X+Y IS A NUMBER RANGING FROM 3 TO 50, X REPRESENTS AN ANION, AND Z REPRESENTS AN ATOMIC GROUP NECESSARY FOR COMPLETING A HETEROCYCLIC RING, IS DISCLOSED.
Inventors
- 👤 Masakazu Yoneyama
- 👤 Isao Shimamura
- 👤 Haruhiko Iwano
- 👤 Reiichi Ohi
Bibliographic Details
Claims Analysis
Total Claims: 0References 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) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |