Patents by Inventor Sumio Saitoh

Sumio Saitoh 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).

  • Composite for decomposing and adsorbing urea dissolved in liquid
    Patent number: 4721652
    Abstract: A composite comprising a core of urease-containing particles covered with fine zeolite powders for decomposing urea dissolved in a liquid and adsorbing a product resulting from said decomposition.
    Type: Grant
    Filed: January 21, 1986
    Date of Patent: January 26, 1988
    Assignee: Catalysts & Chemicals Industries Co., Ltd.
    Inventors: Nobuharu Takai, Sumio Saitoh
  • Thermo-setting resinous liquid compositions
    Patent number: 4499217
    Abstract: A liquid composition comprising a dispersion of silica colloid in alcohol and a thermo-setting resin. The dry film of this composition is superior in chemical resistance, surface hardness, abrasion resistance, heat resistance and adhesiveness to a substrate.
    Type: Grant
    Filed: January 29, 1982
    Date of Patent: February 12, 1985
    Assignee: Catalysts & Chemicals Industries, Co. Ltd.
    Inventors: Masaru Yoshimura, Sumio Saitoh
  • Process of preparing coating compositions comprising polyvinyl butyral and colloidal silica
    Patent number: 4383057
    Abstract: A coating composition comprising a mixture of an organic solvent solution of polyvinyl butyral and an alcoholic dispersion of substantially spherical colloidal silica. The solid content in said mixture is consisted of 20 to 95% by weight of polyvinyl butyral and 80 to 5% by weight of silica.
    Type: Grant
    Filed: August 27, 1981
    Date of Patent: May 10, 1983
    Assignee: Catalysts & Chemicals Ind. Co., Ltd.
    Inventors: Tamechika Yamamoto, Sumio Saitoh, Hikoji Yoshimura, Masaru Yoshimura