Patents by Inventor Yuzo Kakiya

Yuzo Kakiya 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).

  • Process for producing imide compound
    Patent number: 7605260
    Abstract: The present invention provides an excellent industrial process for producing an imide compound hydrochloride. The process for producing an imide compound hydrochloride of the formula (2): or an enantiomer thereof, which comprises treating a compound of the formula (1): or an enantiomer thereof with an aqueous hydrochloric acid solution in a hydrophilic solvent, followed by crystallizing the resultant.
    Type: Grant
    Filed: July 27, 2004
    Date of Patent: October 20, 2009
    Assignee: Dainippon Sumitomo Pharma Co., Ltd.
    Inventors: Yuzo Kakiya, Mayumi Oda
  • Process for producing imide compound
    Publication number: 20060194970
    Abstract: The present invention provides an excellent industrial process for producing an imide compound hydrochloride. The process for producing an imide compound hydrochloride of the formula (2): or an enantiomer thereof, which comprises treating a compound of the formula (1): or an enatiomer thereof with an aqueous hydrochloric acid solution in a hydrophilic solvent, followed by crystallizing the resultant.
    Type: Application
    Filed: July 27, 2004
    Publication date: August 31, 2006
    Inventors: Yuzo Kakiya, Mayumi Oda
  • Process for producing imide compound
    Patent number: RE45573
    Abstract: The present invention provides an excellent industrial process for producing an imide compound hydrochloride. The process for producing an imide compound hydrochloride of the formula (2): or an enantiomer thereof, which comprises treating a compound of the formula (1): or an enantiomer thereof with an aqueous hydrochloric acid solution in a hydrophilic solvent, followed by crystallizing the resultant.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: June 23, 2015
    Assignee: Sumitomo Dainippon Pharma Co., Ltd.
    Inventors: Yuzo Kakiya, Mayumi Oda