Patents by Inventor Naoaki Yamasaki

Naoaki Yamasaki 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).

  • Publication number: 20070190017
    Abstract: A porous cellulose aggregate which has a secondary aggregation structure formed by the aggregation of primary cellulose particles, has a pore volume within a particle of 0.265 cm3/g to 2.625 cm3/g, contains I type crystals, has an average particle diameter of more than 30 ?m and 250 ?m or less, has a specific surface area of 1.3 to 20 cm2/g, has an angle of repose of 25° or more and less than 44°, and has the property that it collapses in water.
    Type: Application
    Filed: January 27, 2005
    Publication date: August 16, 2007
    Inventors: Naoaki Yamasaki, Kazuhiro Obae, Ichiro Ibuki
  • Publication number: 20070028801
    Abstract: A cellulose powder which has an average degree of polymerization of 150 to 450, an average particle diameter of 30 to 250 ?m, an apparent specific volume exceeding 7 cm3/g, and a retention of polyethylene glycol having a molecular weight of 400 to 190% or higher.
    Type: Application
    Filed: May 28, 2004
    Publication date: February 8, 2007
    Applicant: Asahi Kasei Chemicals Corporation
    Inventors: Naoaki Yamasaki, Kazuhiro Obae, Ichiro Ibuki