Patents by Inventor Koh Ogura

Koh Ogura 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).

  • Wood preservative composition
    Patent number: 5300520
    Abstract: A wood preservative composition which comprises a wood preservative in an amount of 0.01-10% by weight and a diphenylalkane compound represented by the general formula ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are independently hydrogen or an alkyl, in an amount of not less than 1% by weight and in an amount of 1-1000 parts by weight in relation to one part by weight of the wood preservative.
    Type: Grant
    Filed: April 24, 1991
    Date of Patent: April 5, 1994
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Akira Igarashi, Koh Ogura, Masayuki Asai, Kazuya Okubo, Yosei Kuwazuru