Patents by Inventor Ronald J. Maher

Ronald J. Maher 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).

  • 2-Thienyl azo dyestuff compounds
    Patent number: 4264495
    Abstract: Azo compounds having the formula ##STR1## in which R.sup.1 is cyano, aryl, an acyl radical or a carbamoyl radical, R.sup.2 is hydrogen, alkyl, alkoxy, aralkyl or aryl, R.sup.3 is alkyl, halogen, thiocyanato, arylazo or one of the substituents which R.sup.1 can represent, and A is an aniline, tetrahydroquinoline, benzomorpholine or .alpha.-naphthylamine disperse azo dye coupling component. The azo compounds produce red to blue shades on polyamide, polyester and cellulose acetate fibers and exhibit improved fastness and dyeability properties on synthetic polyamide fibers.
    Type: Grant
    Filed: May 15, 1972
    Date of Patent: April 28, 1981
    Assignee: Eastman Kodak Company
    Inventors: Ronald J. Maher, John G. Fisher, Max A. Weaver