Patents by Inventor Taro Suzuki

Taro Suzuki 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 preparation of formaldehyde copolymers
    Patent number: 4504636
    Abstract: A copolymer of formaldehyde with a cyclic formal is continuously prepared by feeding formaldehyde, the cyclic formal and 0.1-20 weight parts, per 100 weight parts of formaldehyde, of an inert organic solvent to a biaxial mixer where the formaldehyde is copolymerized with the cyclic formal in the presence of boron trifluoride or an ether complex thereof.
    Type: Grant
    Filed: December 8, 1983
    Date of Patent: March 12, 1985
    Assignee: Ube Industries, Ltd.
    Inventors: Kazumasa Tsunemi, Taro Suzuki, Yoshiichi Yamamoto
  • Method of stabilizing oxymethylene copolymers
    Patent number: 4035338
    Abstract: A method of stabilizing oxymethylene copolymers which comprises heating an oxymethylene copolymer in a hydrocarbonaceous mixed medium consisting of about 50 - 92% by weight of a hydrocarbon having 5 - 7 carbon atoms, about 6 - 48% by weight of an alcohol and about 2 - 20% by weight of water based on the total amount of the medium, at a temperature of from about 100.degree. to about 170.degree. C. in the presence of a salt selected from the group consisting of the sodium and potassium salts of ethylenediaminetetraacetic acid under the conditions of a pH value of from about 4 to about 7.
    Type: Grant
    Filed: June 17, 1975
    Date of Patent: July 12, 1977
    Assignee: UBE Industries, Ltd.
    Inventors: Takami Ishii, Taro Suzuki, Naohisa Takikawa, Kiyoaki Tokunaga, Choji Arima, Hiroshi Kojima