Patents by Inventor Masatoshi Ohata

Masatoshi Ohata 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).

  • Polymer, surface modifier for inorganic materials and modified products thereof
    Patent number: 5288826
    Abstract: Disclosed is a polymer prepared from an .alpha.,.beta.-ethylenic unsaturated compound, characterized by having a structure represented by the following general formula (1): ##STR1## (where, R.sup.1 and R.sup.2, which are the same or different, a C1-C4 alkyl group, m is an integer of 1-10 and n is 0, 1 or 2) in the molecule.
    Type: Grant
    Filed: September 11, 1992
    Date of Patent: February 22, 1994
    Assignee: Nippon Paint Co., Ltd.
    Inventors: Masaharu Yamamoto, Masatoshi Ohata
  • Graft polymerization of substituted styrene polymers having pendant vinylidene groups
    Patent number: 4853436
    Abstract: A graft copolymer having a plurality of polymer side chains is disclosed. The starting backbone polymer is a homopolymer or copolymer of a styrene derivative having a pendant vinylidene group on the benzene ring. The graft copolymer may be produced by metallizing said backbone polymer with an alkali metal and then polymerizing an ethylenically unsaturated monomer in the presence of the metallized polymer as an anionic polymerization initiator.
    Type: Grant
    Filed: February 19, 1988
    Date of Patent: August 1, 1989
    Assignee: Nippon Paint Co., Ltd.
    Inventors: Masatoshi Ohata, Koichi Tsutsui, Ikedal Shoji, Teruo Fujimoto