Patents by Inventor Toshimasa Furukawa

Toshimasa Furukawa 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).

  • Patent number: 5500218
    Abstract: The process of dyeing hair includes uniformly applying to a strip of skin adjoining the hair line of the hair to be dyed a protective composition containing 27 to 50 percent by weight polyethylene glycol having an average molecular weight of 2,700 to 7,500; 7 to 14 percent by weight hydrogenated castor oil, ethoxylated with 40 to 60 moles of ethylene oxide; 28 to 42 percent by weight glycerin and/or ethyl hexanediol and/or polyethylene glycol having a molecular weight of 100 to 300; at least one standard cosmetic additive; and 0 to 18 percent by weight water; to protect the strip of the skin from coloring when dyeing or tinting hair; then treating the hair to be dyed with the hair dye; and after the treating of the hair with the hair dye, subsequently rinsing or rinsing and shampooing the hair.
    Type: Grant
    Filed: October 18, 1993
    Date of Patent: March 19, 1996
    Assignee: Wella Aktiengesellschaft
    Inventors: Karl-Heinz Kischka, Toshimasa Furukawa, Akiyo Maezawa