Patents by Inventor Hisahiro Yamamoto

Hisahiro Yamamoto 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).

  • Method of forming permanent waves on hair
    Patent number: 4660581
    Abstract: A bundle of hair is clamped between a pair of corrugated curling members having alternate ridges and grooves at a predetermined pitch with a predetermined curvature, and then coated with a permanent waving solution to thereby form successive permanent waves on the hair bundle. The hair bundle clamped between the curling members is thereafter immersed in a neutralizing solution to neutralize the hair.
    Type: Grant
    Filed: July 17, 1984
    Date of Patent: April 28, 1987
    Inventor: Hisahiro Yamamoto