Patents by Inventor Hasuo Masayoshi

Hasuo Masayoshi 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 titanium trichloride
    Patent number: 4060593
    Abstract: Solid titanium trichloride in the form of fine granules having low aluminum compound content, which is suitable as a catalyst for polymerization of .alpha.-olefins, especially, propylene is obtained as a precipitate by heating liquefied titanium trichloride in the presence of a liberating agent, and separating the thus formed precipitate. The liquefied titanium trichloride is preferably prepared with an reducing titanium tetrachloride by organic aluminium compound in the presence of ether and hydrocarbon.
    Type: Grant
    Filed: July 31, 1975
    Date of Patent: November 29, 1977
    Assignee: Mitsubishi Chemical Industries
    Inventors: Yamaguchi Kazuo, Kakogawa Genjiro, Hasuo Masayoshi, Nobuaki Goko, Yasuo Maruyama