Patents by Inventor Naoto Taga

Naoto Taga 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).

  • Process for producing expandable styrene-based polymer beads
    Patent number: 4731388
    Abstract: A process for producing expandable styrene-based polymer beads is disclosed, which comprises adding a low temperature polymerization initiator that is decomposable to the half at a temperature of from 50.degree. to 80.degree. C. for a period of 10 hours to an aqueous medium having suspended therein blowing agent-containing expandable styrene-based polymer small particles whose particle sizes have been adjusted so as to have a particle size distribution falling within a mean particle size .+-.
    Type: Grant
    Filed: January 20, 1987
    Date of Patent: March 15, 1988
    Assignee: Mitsubishi Yuka Badische Co., Ltd.
    Inventors: Hiroshi Matsui, Naoto Taga, Shinya Ohgi