Patents by Inventor Tatsuya Takenaka

Tatsuya Takenaka 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).

  • Under-coating compositions of chlorinated polyolefins and epoxy resins
    Patent number: 5514735
    Abstract: An under-coating composition comprising 100 weight parts of chlorinated polyolefin resin including 15 to 35 wt. % of chloride and 1 to 70 weight parts of epoxy resin having an equivalent epoxy weight of less than or equal to 600 is capable of eliminating the pretreatment of a surface of polyolefin resin substrate which is to be overcoated and improving the adhesion strength between the over-coatings and the surface of the substrate of polyolefin resin. Especially, the coating surface according to the present invention is much improved in resistance to hot water and resistance to humidity. Further, the use of the under-coating composition according to the present invention permits an over-coating film to have a high resistance to water decoloration.
    Type: Grant
    Filed: August 15, 1994
    Date of Patent: May 7, 1996
    Assignees: Daikyo Co., Ltd., Shinto Paint Co. Ltd.
    Inventors: Tatsuya Takenaka, Mikio Fukunaga