Patents Represented by Attorney Michael J. Sambrook
  • Patent number: 6980888
    Abstract: A method and apparatus for predicting the result of the coloration of a substrate by a coloring product. The method and apparatus involve the use of micro-processing system and are especially suitable for quickly and easily determining the result of hair coloration by a commercial hair dye product. Preferably a bar-code scanning device is used to input information relating to the product into the micro-processing system.
    Type: Grant
    Filed: June 25, 2003
    Date of Patent: December 27, 2005
    Assignee: The Proctor & Gamble Company
    Inventors: Paul Edmund Baker, David Richard Hayman
  • Patent number: 6951574
    Abstract: Primary intermediates for hair coloring compositions for oxidative dyeing of hair are compounds of the formula (1): where R1 and R2 are each individually selected from a hydrogen atom, a C1 to C3 alkyl group, a C1 to C5 mono or dihydroxyalkyl group; phenyl or benzyl optionally substituted with an alkoxy group, or R1 and R2 together with the nitrogen atom to which they are attached form a piperazine, piperidine, imidazole, or morpholine ring.
    Type: Grant
    Filed: July 12, 2004
    Date of Patent: October 4, 2005
    Assignee: The Procter & Gamble Company
    Inventors: Mu-Ill Lim, Yuh-Guo Pan
  • Patent number: 6908493
    Abstract: Couplers for hair coloring compositions for oxidative dyeing of hair are compounds of the formula (1): where R1 and R2 are each individually selected from a hydrogen atom, a C1 to C3 alkyl group, a C1 to C5 mono or dihydroxyalkyl group; phenyl or benzyl optionally substituted with an alkoxy group, or R1 and R2 together with the nitrogen atom to which they are attached form a piperazine, piperidine, imidazole, or morpholine ring.
    Type: Grant
    Filed: May 7, 2004
    Date of Patent: June 21, 2005
    Assignee: The Procter & Gamble Company
    Inventors: Mu-Ill Lim, Yuh-Guo Pan, James S. Anderson