Patents by Inventor Jun Kaita

Jun Kaita 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).

  • Catalyst for transesterification
    Patent number: 6407269
    Abstract: The present invention provides a heterogeneous catalyst which is highly active, excellent in selectivity and free from elution of its catalyst-components during reaction and which has long lifetime. That is, a phosphate of a metal selected from the group consisting of aluminum, gallium and iron is used as the catalyst for transesterification of the present invention.
    Type: Grant
    Filed: June 22, 2001
    Date of Patent: June 18, 2002
    Assignee: Kao Corporation
    Inventors: Jun Kaita, Taku Mimura, Noriaki Fukuoka, Yasuyuki Hattori
  • Solid acid catalyst
    Patent number: 6383970
    Abstract: The present invention provides a solid acid catalyst developing high activity and exhibiting high durability in various organic reactions. That is, the present invention provides a solid acid catalyst having the structure (A) in which a hydrogen atom is eliminated from at least one of OH groups contained in an inorganic phosphorus acid, the structure (B) in which a hydrogen atom is eliminated from at least one of OH groups contained in an organic phosphorus acid represented by the formula (1) or (2) and at least one metal atom (C) selected from aluminum, gallium and iron and a method for producing an ester, a ketal or an acetal by using the solid acid catalyst; wherein each of —R1 and —R2 is selected from —R, —OR, —OH and —H in which at least one of —R1 and —R2 is —R or —OR, given that —R is an organic group having 1-22 carbon atoms.
    Type: Grant
    Filed: June 19, 2000
    Date of Patent: May 7, 2002
    Assignee: Kao Corporation
    Inventors: Taku Mimura, Jun Kaita, Noriaki Fukuoka, Yasuyuki Hattori
  • Catalyst for transesterification
    Publication number: 20020010359
    Abstract: The present invention provides a heterogeneous catalyst which is highly active, excellent in selectivity and free from elution of its catalyst-components during reaction and which has long lifetime. That is, a phosphate of a metal selected from the group consisting of aluminum, gallium and iron is used as the catalyst for transesterification of the present invention.
    Type: Application
    Filed: June 22, 2001
    Publication date: January 24, 2002
    Applicant: Kao Corporation
    Inventors: Jun Kaita, Taku Mimura, Noriaki Fukuoka, Yasuyuki Hattori
  • Method for dehalogenation of a halide and catalyst used therefor
    Patent number: 4956326
    Abstract: A catalyst for dehalogenation of a halide comprising a corrosion-resistant ceramic or graphite having a surface area of 5.0 m.sup.2 /g or less and, supported thereon, at least one of a platinum group metal and a silicide thereof, and a method of dehalogenation of a halide using this catalyst.
    Type: Grant
    Filed: July 10, 1987
    Date of Patent: September 11, 1990
    Assignees: Chiyoda Chemical Engineering & Construction Co., Ltd., Nippon Kokan Co., Ltd.
    Inventors: Noriyuki Yoneda, Toshiji Makabe, Jun Kaita, Munekazu Nakamura, Yoshiko Endoh, Hidehiko Kudoh, Shunji Higashi