Patents by Inventor Norio Kataoka

Norio Kataoka 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).

  • Halogen-containing polyether and its use
    Patent number: 4836944
    Abstract: A halogen-containing polyether which comprises a repeating unit structure of the formula:--(CH.sub.2 CF.sub.2 CF.sub.2 O).sub.a --(CHClCF.sub.2 CF.sub.2 O).sub.b --(CCl.sub.2 CF.sub.2 CF.sub.2 O).sub.c --(CHFCF.sub.2 CF.sub.2 O).sub.d --(CFClCF.sub.2 CF.sub.2 O).sub.e --(CF.sub.2 CF.sub.2 CF.sub.2 O).sub.f --(I)wherein a, b, c, d, e and f are each 0 or a positive integer and satisfy the following equations:2.ltoreq.a+b+c+d+e+f.ltoreq.200 and 1.ltoreq.a+c+d+fand at least one terminal group selected from the group consisting of groups represented by the formulas:--CH.sub.2 OH, --COOR.sup.1, --CONR.sup.1.sub.2, --COOOR.sup.2 Ph and --R.sup.2 Phwherein R.sup.1 is a hydrogen atom, a C.sub.1 -C.sub.5 alkyl group or an aromatic group, R.sup.2 is a divalent organic group and Ph is an aromatic group, which has good lubricating properties.
    Type: Grant
    Filed: June 1, 1988
    Date of Patent: June 6, 1989
    Assignee: Daikin Industries Ltd.
    Inventors: Takashi Tohzuka, Sueyoshi Ishikawa, Katsuyoshi Kubo, Yoshitaka Honda, Yukio Ohmure, Norio Kataoka