Patents by Inventor Kathy Gaby Elst

Kathy Gaby Elst has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Processing method providing cold blue-black image tone for black-and-white materials having silver halide grain emulsions
    Patent number: 6432625
    Abstract: A method has been described for processing an exposed black-and-white silver halide photographic film material comprising in a hydrophilic light-sensitive layer thereof a binder and silver halide grains being {111} or {100} tabular silver bromo(chloro)iodide or silver chloro(bromo)iodide grains having an average aspect ratio of from 1.2 to 50 and having a silver iodide content of less than 3 mole % based on silver with at least part of it at their grain surface, said method comprising the steps of developing in a developer, fixing in a fixer, rinsing and drying, characterized in that in said developing step the developer comprises an alkali soluble agent having preventing silver dissolution properties, being a mercapto azole compound as presented herein.
    Type: Grant
    Filed: November 9, 2000
    Date of Patent: August 13, 2002
    Assignee: Agfa-Gevaert
    Inventors: Ann Verbeeck, Govert Wim De Baecke, Johan August Loccufier, Kathy Gaby Elst, André Cornelius Roefs, Freddy Hendrickx