Patents by Inventor James E. Kijek

James E. Kijek 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).

  • Hair dye coupler and process for making
    Patent number: 4838894
    Abstract: A substituted m-aminophenol coupler useful in hair dyeing having the formula ##STR1## and acid addition salts thereof wherein x and y are selected from the group consisting of halogen and the groups OR of which R is the same or different alkyl, aminoalkyl or hydroxyalkyl groups, at least one of x or y being a group OR and a process for preparing these compounds.
    Type: Grant
    Filed: December 21, 1987
    Date of Patent: June 13, 1989
    Assignee: Clairol Incorporated
    Inventors: James E. Kijek, Keith C. Brown, Bryan P. Murphy
  • 2,4-bis-aryloxy-m-phenylenediamines and their use as couplers in oxidation dye compositions
    Patent number: H726
    Abstract: Compounds of formula: ##STR1## and oxidation hair dye compositions containing the same; also includes a process for dyeing hair with such compositions; Ar being an aryl radical.
    Type: Grant
    Filed: January 9, 1987
    Date of Patent: January 2, 1990
    Assignee: Clairol Incorporated
    Inventors: Keith C. Brown, James E. Kijek