Patents by Inventor Kazuya Kitasaka

Kazuya Kitasaka 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).

  • Patent number: 7241625
    Abstract: A carbonyl compound scavenger comprising a mineral acid salt of a benzylhydroxyamine-based compound of the formula (1) and at least one adsorbent selected from the group consisting of silica gel, alumina, cellulose and activated carbon: [wherein, R represents an alkyl group having 1 to 8 carbon atoms, haloalkyl group having 1 to 4 carbon atoms, alkoxy group having 1 to 4 carbon atoms, haloalkoxy group having 1 to 4 carbon atoms, nitro group or cyano group, and R1 and R2 represent each independently a hydrogen atom or alkyl group having 1 to 8 carbon atoms, and a hydrogen atom on a benzene ring to which a cyano group and R are connected may be substituted with an alkyl group having 1 to 8 carbon atoms, haloalkyl group having 1 to 4 carbon atoms, alkoxy group having 1 to 4 carbon atoms, haloalkoxy group having 1 to 4 carbon atoms, aryl group having 6 to 10 carbon atoms, nitro group or cyano group.].
    Type: Grant
    Filed: June 2, 2005
    Date of Patent: July 10, 2007
    Assignee: Sumika Chemical Analysis Service, Limited
    Inventors: Kazuya Kitasaka, Hatsumi Shimajiri, Koichi Sugihara
  • Publication number: 20060275913
    Abstract: A carbonyl compound scavenger comprising a mineral acid salt of a benzylhydroxyamine-based compound of the formula (1) and at least one adsorbent selected from the group consisting of silica gel, alumina, cellulose and activated carbon: [wherein, R represents an alkyl group having 1 to 8 carbon atoms, haloalkyl group having 1 to 4 carbon atoms, alkoxy group having 1 to 4 carbon atoms, haloalkoxy group having 1 to 4 carbon atoms, nitro group or cyano group, and R1 and R2 represent each independently a hydrogen atom or alkyl group having 1 to 8 carbon atoms, and a hydrogen atom on a benzene ring to which a cyano group and R are connected may be substituted with an alkyl group having 1 to 8 carbon atoms, haloalkyl group having 1 to 4 carbon atoms, alkoxy group having 1 to 4 carbon atoms, haloalkoxy group having 1 to 4 carbon atoms, aryl group having 6 to 10 carbon atoms, nitro group or cyano group.].
    Type: Application
    Filed: June 2, 2005
    Publication date: December 7, 2006
    Applicant: Sumika Chemical Analysis Service, Limited
    Inventors: Kazuya Kitasaka, Hatsumi Shimajiri, Koichi Sugihara
  • Publication number: 20040248313
    Abstract: There is provided a method for producing a sampling tube for carbonyl compound, manifesting low blank value and enabling analysis of carbonyl compounds such as formaldehyde and the like in air or in water with high sensitivity and high accuracy by a simple manner, which comprises the following steps:
    Type: Application
    Filed: March 25, 2004
    Publication date: December 9, 2004
    Inventors: Kazuya Kitasaka, Koichi Sugihara
  • Patent number: 6436311
    Abstract: A sampling material for a carbonyl compound in a gas comprising a reagent capable of converting a carbonyl compound to a derivative thereof supported on a cation exchanger; and a sampling cartridge for a carbonyl compound in a gas wherein a sampling material for a carbonyl compound in a gas comprising a reagent capable of converting a carbonyl compound to a derivative thereof supported on a cation exchanger is packed in a column are provided. The sampling cartridge can be used for analyzing a carbonyl compound such as formaldehyde with ease and at a high sensitivity and high accuracy, and has excellent storage stability.
    Type: Grant
    Filed: December 28, 2000
    Date of Patent: August 20, 2002
    Assignee: Sumika Chemical Analysis Service, Ltd.
    Inventors: Takashi Harimoto, Kazuya Kitasaka, Shinji Hirose