Patents by Inventor Kuniko Igarashi

Kuniko Igarashi 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).

  • Packing material and cartridge for solid phase extraction
    Patent number: 6602928
    Abstract: A packing material for solid phase extraction, which is a particle having an exclusion limit molecular weight of 1×103 to 1.5×104 in gel permeation chromatography using a standard polystyrene as the sample. A column for solid phase extraction and a cartridge for solid phase extraction, a method of using the packing material; and a process for treating a sample using the column or cartridge are also disclosed.
    Type: Grant
    Filed: August 21, 2001
    Date of Patent: August 5, 2003
    Assignee: Showa Denko Kabushiki Kaisha
    Inventors: Ryuji Takahashi, Kuniko Igarashi, Hiroshi Suzuki
  • Packing material and cartridge for solid phase extraction
    Publication number: 20020041938
    Abstract: A packing material for solid phase extraction, which is a particle having an exclusion limit molecular weight of 1×103 to 1.5×104 in gel permeation chromatography using a standard polystyrene as the sample. A column for solid phase extraction and a cartridge for solid phase extraction, a method of using the packing material; and a process for treating a sample using the column or cartridge are also disclosed.
    Type: Application
    Filed: August 21, 2001
    Publication date: April 11, 2002
    Applicant: SHOWA DENKO KABUSHIKI KAISHA
    Inventors: Ryuji Takahashi, Kuniko Igarashi, Hiroshi Suzuki