US3706563A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-sensitive silver halide photographic material
Assignee: Konica Minolta Inc
•
Filing: 1971-03-19
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Granted: 1972-12-19
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Expires: 1991-03-19
Abstract
Abstract A new polymer compound having the guanidyketimine structural unit of the formula WHEREIN X is an acid radical and n is 1 or 2 has been synthesized. The said compound is useful as a mordant in a lightsensitive silver halide photographic material in order to prevent undesired migration of an acidic dye contained in a certain layer of the said photographic material. This greatly enhances sharpness to the image obtained from the said photographic material.
Inventors
- 👤 Rintaro Ushiyama
- 👤 Osakazu Sugino
- 👤 Shui Sato
- 👤 Eiichi Sakamoto
- 👤 Hiroshi Yamada
- 👤 Shoji Kikuchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:14
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/825; G03C1/835; C; C08; C08F; C08F8/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
23 words
A light-sensitive silver halide photographic material as in claim 1 wherein the dye and mordant are incorporated Into an anti-irradiation or anti-halation layer.
Claim 2
Dependent Claim
22 words
A light-sensitive silver halide photographic material as in claim 1 wherein the polymer has a molecular weight of about 8,500 to 80,000.
References Cited (Backward Citations)
US2882156A
Cited
US3625691A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-19 | 1976-06-19 | 1976-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-19 | 1980-06-19 | 1980-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-19 | 1984-06-19 | 1984-12-19 | $7700.00 | Window Closed / Lapsed |