Patents by Inventor Toshimiki Shimizu

Toshimiki Shimizu 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 process of resin composition having phenolic hydroxyl groups
    Patent number: 5132349
    Abstract: A preparation process of a phenol-based resin composition by conducting a crosslinking reaction of a specific silicone compound in the phenol-based resin in the presence of a specific emulsifier, crosslinking agent and catalyst and by the addition of water to disperse resulting silicone rubber as fine particles in the phenol-based resin.The phenol-based resin of the invention has no time-dependent variation in molding processability and molded products are stable and has no time-dependent change in impact resistance, flexural strength and thermal shock resistance (heat crack resistance), and hence the phenol-based resin composition is used for various molding materials and friction materials which require excellent mechanical strength, crack resistance, thermal shock resistance, stress relaxation resistance or abrasion resistance.
    Type: Grant
    Filed: May 7, 1991
    Date of Patent: July 21, 1992
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Shigeru Iimuro, Masahiko Asano, Toshimiki Shimizu