Patents by Inventor Yasushi Kanagawa

Yasushi Kanagawa 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 for improving qualities of wood
    Patent number: 5103575
    Abstract: Wood is preliminary dried until its moisture content is reduced to 20 to 30%, and then treated by radio frequency heating in two stages, i.e., the first stage where the radio frequency heating is carried out at a temperature of 60.degree. to 120.degree. C., and the second stage where the radio frequency heating is carried out at a temperature of not more than 60.degree. C.
    Type: Grant
    Filed: February 5, 1991
    Date of Patent: April 14, 1992
    Assignee: Fuyo Lumber Sales Co., Ltd.
    Inventors: Kuniharu Yokoo, Yoshinori Kobayashi, Yasushi Kanagawa