Patents by Inventor Masami UKAWA

Masami UKAWA 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: 9708628
    Abstract: The present invention relates to a compound represented by the formula (1) wherein Xa and Xb are each independently X1 or X2; s is 1 or 2, R4 is an alkyl group having 1-6 carbon atoms, na and nb are each independently 0 or 1, R1a and R1b are each independently an alkylene group having 1-6 carbon atoms, R2a and R2b are each independently an alkylene group having 1-6 carbon atoms, Ya and Yb are each independently an ester bond, an amide bond, a carbamate bond, an ether bond or a urea bond, and R3a and R3b are each independently a sterol residue, a liposoluble vitamin residue or an aliphatic hydrocarbon group having 12-22 carbon atoms, and use thereof.
    Type: Grant
    Filed: May 16, 2014
    Date of Patent: July 18, 2017
    Assignees: NOF Corporation, National University Corporation Hokkaido University
    Inventors: Kota Tange, Masaya Arai, Kazuhiro Kubo, Hidetaka Akita, Hideyoshi Harashima, Hiroto Hatakeyama, Ryohei Ishiba, Masami Ukawa, Hiroki Tanaka
  • Publication number: 20140335157
    Abstract: The present invention relates to a compound represented by the formula (1) wherein Xa and Xb are each independently X1 or X2; s is 1 or 2, R4 is an alkyl group having 1-6 carbon atoms, na and nb are each independently 0 or 1, R1a and R1b are each independently an alkylene group having 1-6 carbon atoms, R2a and R2b are each independently an alkylene group having 1-6 carbon atoms, Ya and Yb are each independently an ester bond, an amide bond, a carbamate bond, an ether bond or a urea bond, and R3a and R3b are each independently a sterol residue, a liposoluble vitamin residue or an aliphatic hydrocarbon group having 12-22 carbon atoms, and use thereof.
    Type: Application
    Filed: May 16, 2014
    Publication date: November 13, 2014
    Inventors: Kota TANGE, Masaya ARAI, Kazuhiro KUBO, Hidetaka AKITA, Hideyoshi HARASHIMA, Hiroto HATAKEYAMA, Ryohei ISHIBA, Masami UKAWA, Hiroki TANAKA