Patents by Inventor Hiromi Izaiku

Hiromi Izaiku 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).

  • Coating composition with improved rust-preventing properties for use in preparing lubricated steel products
    Patent number: 4826902
    Abstract: A coating composition based on an acrylic resin which is useful for preparing lubricated steel products such as steel sheets or tubes is disclosed. The coating composition contains as additives a rust preventive which is a mixture of a sulfonamidecarboxylic acid and an cyclic amine and a water repellent. It exhibits improved rust-preventing properties when lubricated steel products having a coating film formed from the coating composition are stored for a prolonged period under coiled or stacked conditions.
    Type: Grant
    Filed: March 11, 1988
    Date of Patent: May 2, 1989
    Assignees: Nippon Oil & Fats Co., Ltd., Sumitomo Metal Industries, Ltd.
    Inventors: Hiroki Hanabata, Hideo Kawaguchi, Hiroshi Fukudome, Ryoichi Noumi, Hiromi Izaiku, Koichi Komai, Kisuke Yoshida
  • Sulfur-containing complex esters and spin finishing compositions using said esters
    Patent number: 4128483
    Abstract: Novel sulfur-containing complex esters are constituted with thiodipropionic acid, polyhydric alcohols having at least three valencies and monobasic acids having 5 - 24 carbon atoms. The sulfur-containing complex esters are excellent in the thermal stability and the lubricity, so that these esters are useful as base oils for spin finishing compositions for synthetic fibers.
    Type: Grant
    Filed: March 9, 1978
    Date of Patent: December 5, 1978
    Assignee: Nippon Oil and Fats Co. Ltd.
    Inventors: Shiro Ishida, Genuemon Funatsuki, Hiromi Izaiku, Jiro Hirano