Patents by Inventor Shuji Hirohama

Shuji Hirohama 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).

  • Controlled release composition containing volatile compound
    Patent number: 5928661
    Abstract: A controlled release composition comprising a volatile compound such as allyl isothiocyanate and a rosin in a proportion of 0.1 to 100 parts by weight of the compound per 100 parts by weight of the rosin, the controlled release composition further comprising a plasticizer, and the controlled release composition laminated on a substrate or in other forms. The AIT controlled release composition of the present invention can be used for emission of aroma, antimicrobial effect, antibacterial effect, insecticidal action, insectproof effect, fungicidal action, fungiproof action, freshness retention, antiseptic or preservative effect and the like.
    Type: Grant
    Filed: May 29, 1997
    Date of Patent: July 27, 1999
    Assignees: Rengo Co., Ltd., The Green Cross Corporation
    Inventors: Masao Fujita, Shuji Hirohama, Yoshihiro Hayashi, Shinichi Igarashi, Yuichi Mizukami, Yasushi Sekiyama, Asami Takata