Patents by Inventor Tetsuo Nakase

Tetsuo Nakase 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).

  • Suppression of pressure water absorption of lightweight aggregate by aqueous dispersion therein of anionic polymers
    Patent number: 4956403
    Abstract: A pressure water absorption inhibitor for lightweight aggregates which comprises an aqueous dispersion of a polymeric substance having a viscosity which permits the aqueous dispersion to enter the fine pores in the surface layer of a lightweight aggregate and which dispersion is capable of being thickened to a viscosity of not less than 50 times the viscosity before thickening by elevation of the pH.
    Type: Grant
    Filed: November 2, 1987
    Date of Patent: September 11, 1990
    Assignees: Takenaka Komuten Co., Ltd., Sanyo Chemical Industries, Ltd.
    Inventors: Toshio Yonezawa, Takashi Iwashimizu, Yasuhiko Yoshioka, Koichi Ito, Kunio Sakaue, Tetsuo Nakase