Patents by Inventor Yukimasa Matuda

Yukimasa Matuda 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).

  • Preparation of propylene polymer-containing solid titanium trichloride and propylene polymers using same
    Patent number: 4200717
    Abstract: A solid titanium trichloride, produced by precipitation from a homogeneous solution or mixture with an ether, is treated by prepolymerization with propylene at a partial pressure of less than 1 kg/cm.sup.2. The pretreated titanium trichloride containing a propylene polymer is then admixed with an organoaluminum compound and the admixture is used as a catalyst in the polymerization of propylene.
    Type: Grant
    Filed: March 27, 1978
    Date of Patent: April 29, 1980
    Assignee: Mitsubishi Chemical Industries, Ltd.
    Inventors: Toshizo Abe, Nobuaki Goko, Yasuhiro Nishihara, Yukimasa Matuda