Patents by Inventor Jaroslav Slupecky

Jaroslav Slupecky 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).

  • Water-insoluble violet benzimidazolone monoazo pigments
    Patent number: 6706864
    Abstract: Water-insoluble violet benzimidazolone monoazo pigments of the formula: wherein R1, R2 and R3 each represent hydrogen, chlorine, bromine, methyl, methoxy, ethoxy, nitro or a group of the formula —COOR with R being hydrogen, methyl or ethyl, and R4 represents hydrogen, chlorine, bromine, methyl, methoxy, ethoxy or nitro group. Due to the presence of two 5-membered heterocyclic rings in the molecule, these pigments display very high thermoresistance and excellent fastness to migration.
    Type: Grant
    Filed: February 20, 2003
    Date of Patent: March 16, 2004
    Assignee: Dominion Colour Corporation
    Inventors: Mark J. Vincent, Helen Skelton, Jaroslav Slupecky, Justin Yee