Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Substituted triazolopyrimidines and their use in light-sensitive photographic elements

Substituted triazolopyrimidines and their use in light-sensitive photographic elements

US Patent 4727017 · Granted Feb 23, 1988

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Imaging element comprising a photopolymerizable composition1997
Imaging element for making lithographic printing plates according to the silver 1997
Type of modified gelatin and its use in a DTR material1996
Type of modified gelatin and its use in a DTR material1995
Modified gelatin types and hydrophilic elements containing them1995
Photographic direct positive material containing a masked benzotriazole stabiliz1993
Class of masked stabilizers in photographic materials or developing solutions1993
High contrast developer containing an aprotic solvent1993
Photographic stabilizers with 1-phenyl-3-pyrazolidinone moieties1992
Method of developing direct positive silver halide material1992
Developer liquid for high contrast development1992
Quick acting hardener for photographic gelatin layers1991