Patents by Inventor Katsuya Sakata

Katsuya Sakata 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).

  • Method for preparing a fatty acid derivative
    Patent number: 9242950
    Abstract: A method for manufacturing a fatty acid derivative represented by formula (I) is provided: wherein Z1 is wherein R3 is a protecting group for a hydroxy group; which includes the step of reacting a compound of formula (II): wherein Z2 is the same as Z1 except for when Z1 is Z2 is with a co-oxidizer under the presence of an azaadamantane-N-oxyl derivative.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: January 26, 2016
    Assignees: R-TECH UENO, LTD., SUCAMPO AG
    Inventors: Tatsuya Matsukawa, Noriyuki Yamamoto, Ryuji Ueno, Hiroyuki Kotajima, Shunsuke Fukuya, Michiharu Handa, Katsuya Sakata
  • METHOD FOR PREPARING A FATTY ACID DERIVATIVE
    Publication number: 20130005995
    Abstract: A method for manufacturing a fatty acid derivative represented by formula (I) is provided: wherein Z1 is wherein R3 is a protecting group for a hydroxy group; which includes the step of reacting a compound of formula (II): wherein Z2 is the same as Z1 except for when Z1 is Z2 is with a co-oxidizer under the presence of an azaadamantane-N-oxyl derivative.
    Type: Application
    Filed: June 29, 2012
    Publication date: January 3, 2013
    Applicants: SUCAMPO AG, R-TECH UENO, LTD.
    Inventors: Tatsuya MATSUKAWA, Noriyuki YAMAMOTO, Ryuji UENO, Hiroyuki KOTAJIMA, Shunsuke FUKUYA, Michiharu HANDA, Katsuya SAKATA
  • Process for Producing Imidazothiazole Derivatives
    Publication number: 20090036685
    Abstract: Disclosed is a process for producing an imidazothiazole derivative of formula (I) useful as an intermediate for the production of carbapenem derivatives having potent antimicrobial activity and a broad antimicrobial spectrum, that is, a novel method for nicotinoylating an imidazo[5,1-b]thiazole ring at its 7-position. The process comprises reacting a compound of formula (II) with a compound of formula (III).
    Type: Application
    Filed: July 21, 2006
    Publication date: February 5, 2009
    Inventors: Dai Kubota, Yasuo Yamamoto, Toshiro Sasaki, Takashi Ando, Eiki Shitara, Katsuya Sakata, Kenji Suzuki