Patents by Inventor Kunio Yanagibashi

Kunio Yanagibashi 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).

  • Hydraulic substance with water stable particle coating
    Patent number: 5584927
    Abstract: The hydraulic substance according to the present invention comprises a certain amount of solid particles A (such as portland cement and mixed cement comprising portland cement), an average diameter thereof is 5 to 50 .mu.m, and solid particles B (such as silica fume comprising amorphous silica), an average diameter thereof is less than 1/5 of the particles A, and the particles B have such characteristic that they cohere to the surfaces of the particles A in water, and the quantity of the particles B is arranged such that they cover at least to make a single layer over the whole or part of surfaces of the particles A to cover whole or part of surfaces of particles A with particles B at least with a single layer, and the quantity of the water is arranged such that it is less than 60% of the total amount of the particles A and particles B.
    Type: Grant
    Filed: July 27, 1994
    Date of Patent: December 17, 1996
    Assignees: Takenaka Corporation, Mitsubishi Materials Corporation, Keihin Ryoko Concrete Industry Corporation, Takemoto Oil and Fat Corporation
    Inventors: Toshio Yonezawa, Kenrou Mitsui, Kunio Yanagibashi, Yousaku Ikeo, Tooru Okuno, Etsurou Asakura, Hisatsugu Yoshida, Mitsuo Sato, Mitsuo Kinoshita
  • Durability improving agent for cement-hydraulic-set substances, method of improving same, and cement-hydraulic-set substances improved in durability
    Patent number: 5174820
    Abstract: The present invention provides a method for improving the durability of cement-hydraulic substances, the method decreasing the dry shrinkage of cement-hydraulic-set substances such as concrete, mortar or related substances, and increasing resistance to a repetition of the freezing and thawing of the cement-hydraulic-set substances, by the use of terminal alkyletherified compounds or terminal alkylesterified compounds of polymers having --C.sub.2 H.sub.5 O-- and/or --C.sub.3 H.sub.6 O-- as a repetitive unit.
    Type: Grant
    Filed: February 11, 1992
    Date of Patent: December 29, 1992
    Assignees: Fujisawa Pharmaceutical Co., Ltd., Takenaka Corporation, Nippon Nyukazai Co., Ltd.
    Inventors: Masaharu Sakuta, Toshio Saito, Kunio Yanagibashi
  • Durability improving agent for cement-hydraulic-set substances, method of improving same, and cement-hydraulic-set substances improved in durability
    Patent number: 4975121
    Abstract: The present invention provides a method for improving the durability of cement-hydraulic substances, the method decreasing the dry shrinkage of cement-hydraulic-set substances such as concrete, mortar or related substances, and increasing resistance to a repetition of the freezing and thawing of the cement-hydraulic-set substances, by the use of terminal alkyletherified compounds or terminal alkylesterified compounds of polymers having --C.sub.2 H.sub.5 O-- and/or --C.sub.3 H.sub.6 O-- as a repetitive unit.
    Type: Grant
    Filed: July 13, 1989
    Date of Patent: December 4, 1990
    Assignees: Fujisawa Pharmaceutical Co., Ltd., Takenaka Corporation, Nippon Nyukazai Co., Ltd.
    Inventors: Masaharu Sakuta, Toshio Saito, Kunio Yanagibashi