Patents by Inventor Shohachi Ogura

Shohachi Ogura 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 preparing prepolymers or precopolymers of diallyl phthalate in a solid state
    Patent number: 4083819
    Abstract: An improved process for preparing prepolymers or precopolymers of diallyl phthalate in a solid state from a prepolymer or precopolymer phase separated by the liquid phase extraction in a liquid state of fluidity and containing 10-30% by weight of the extractant, which comprises forming the prepolymer or precopolymer phase in a liquid state of fluidity and containing the extractant into a sheetlike form prior to solidifying it by cooling, heating prepolymer or precopolymer phase under foaming conditions accompanied by the evaporation of the extractant, and thereafter solidifying the prepolymer or precopolymer.
    Type: Grant
    Filed: September 17, 1976
    Date of Patent: April 11, 1978
    Assignee: Osaka Soda Co. Ltd.
    Inventors: Akio Hisano, Shohachi Ogura, Kouji Satomo