Patents by Inventor Okihiro Kawai

Okihiro Kawai 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).

  • Dyed textile products and a method of producing them
    Patent number: 5221289
    Abstract: A dyed textile article treated with tannic acid and dyed with an extract of mycelia or basidiocarps of Ganoderma lucidum. This article is produced by a process comprising contacting a substrate article of cotton, linen, silk or wool first with a pretreating bath containing tannic acid or a natural material containing tannic acid, e.g. gall, then with a mordant bath containing an alumina mordant, such as grass or wood ashes, and finally with the mycelia or basidiocarps of Ganoderma lucidum. This dyed textile article has not only a natural color and feeling, with a sufficient depth of color, but also antimicrobial and antiallergic functions.
    Type: Grant
    Filed: June 25, 1992
    Date of Patent: June 22, 1993
    Assignee: Hiroki Miyamatsu
    Inventors: Hiroki Miyamatsu, Okihiro Kawai, Koji Morita, Michinori Kubo