Patents by Inventor Hiroaki Katano

Hiroaki Katano 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).

  • Method for reinforcing structures
    Patent number: 6017588
    Abstract: The present invention relates to a method for reinforcing a structure comprising the steps of forming a primer layer on the surface of a structure to be reinforced; forming if necessary a putty layer on the primer layer; applying an impregnating resin on the formed primer layer provided that the putty layer in case where the putty layer is formed on the primer layer, before, after or before and after cladding with the fiber sheets, to allow the resin to penetrate into the spaces in the fiber sheets; and curing the resin,the said primer, putty and impregnating resin comprising a resin composition which can cure at a temperature not more than 5.degree. C.
    Type: Grant
    Filed: February 25, 1998
    Date of Patent: January 25, 2000
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Takeshi Watanabe, Hiroaki Katano, Tsuneo Tanaka, Joji Shibata, Mitsuhiro Yada, Takeshi Nemoto
  • Polyisocyanate composition
    Patent number: 5248714
    Abstract: A polyisocyanate composition comprising 0.1% by weight or more and less than 10% by weight of a silicate compound dissolved or dispersed into at least one kind of polyisocyanate compound selected from the group consisting of diphenylmethane diisocyanate oligomers containing 20 to 60% by weight of diphenylmethane diisocyanate and the derivatives thereof. This composition has an excellent low temperature storage stability.
    Type: Grant
    Filed: June 29, 1992
    Date of Patent: September 28, 1993
    Assignee: Dow Mitsubishi Kasei Limited
    Inventors: Shigeru Yamaguchi, Hiroaki Katano, Tetsuya Tanaka
  • Polyisocyanate composition
    Patent number: 5240991
    Abstract: This invention relates to a polyisocyanate composition which contains a specific amount of denatured silicon oil being inactive to polyisocyanate compound comprising a specific diphenylmethane diisocyanate oligomer and/or its derivatives. The polyisocyanate composition of this invention has excellent storage stability at low temperature.
    Type: Grant
    Filed: November 12, 1992
    Date of Patent: August 31, 1993
    Assignee: Dow Mitsubishi Kasei Limited
    Inventors: Shigeru Yamaguchi, Hiroaki Katano
  • Amino group-containing silicate composition and dehydrating agent containing it
    Patent number: 5210246
    Abstract: The present invention relates to a reaction product of a tetraalkoxysilane or a silicate oligomer obtained by its partial hydrolysis-dehydration-polycondensation, with an amino alcohol having one or two hydroxyl groups, and a dehydrating agent comprising such a reaction product.The dehydrating agent of the present invention is suitable for dehydrating a moisture at a level of a few hundreds ppm. Further, since an amino alcohol is formed by the dehydration, it is particularly useful as a dehydrating agent for a raw material for the production of a urethane resin or an epoxy resin.
    Type: Grant
    Filed: June 20, 1991
    Date of Patent: May 11, 1993
    Assignees: Mitsubishi Kasei Corporation, Dow Mitsubishi Kasei Limited
    Inventors: Tetsuya Tanaka, Hiroaki Katano, Masaaki Ohtani
  • Silicate compound modified by hydroxyl containing compounds
    Patent number: 5138014
    Abstract: The present invention relates to a novel modified silicate composition obtained by reacting an alkyl silicate or its oligomer with a certain specific active hydrogen-containing compound in a certain specific ratio.
    Type: Grant
    Filed: August 20, 1990
    Date of Patent: August 11, 1992
    Assignees: Mitsubishi Kasei Corporation, Dow Mitsubishi Kasei Limited
    Inventors: Hiroaki Katano, Tetsuya Tanaka, Takayuki Ohta, Takeshi Sawai