Patents by Inventor Seiji Morihashi

Seiji Morihashi 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).

  • Asymmetric hollow fiber gas separation membrane
    Patent number: 8734568
    Abstract: The present invention relates to an asymmetric hollow fiber membrane for gas separation made of a soluble aromatic polyimide, wherein an orientation index is 1.3 or less, a separation coefficient ?(P?O2/P?N2) as a permeation rate ratio of oxygen gas/nitrogen gas at 40° C. is 5.3 or more, and a tensile fracture elongation is 15% or more.
    Type: Grant
    Filed: March 30, 2011
    Date of Patent: May 27, 2014
    Assignee: Ube Industries, Ltd.
    Inventors: Hiroki Hisamori, Tatsuya Hayashi, Seiji Morihashi, Tomonori Kanougi
  • ASYMMETRIC HOLLOW FIBER GAS SEPARATION MEMBRANE
    Publication number: 20130019748
    Abstract: The present invention relates to an asymmetric hollow fiber membrane for gas separation made of a soluble aromatic polyimide, wherein an orientation index is 1.3 or less, a separation coefficient ?(P?O2/P?N2) as a permeation rate ratio of oxygen gas/nitrogen gas at 40° C. is 5.3 or more, and a tensile fracture elongation is 15% or more.
    Type: Application
    Filed: March 30, 2011
    Publication date: January 24, 2013
    Applicant: UBE INDUSTRIES, LTD.
    Inventors: Hiroki Hisamori, Tatsuya Hayashi, Seiji Morihashi, Tomonori Kanougi