Patents by Inventor Dongbing Zhao

Dongbing Zhao 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).

  • Preparation process of (6R)-tetrahydrobiopterin hydrochloride
    Patent number: 8895735
    Abstract: A preparation process of (6R)-tetrahydrobiopterin hydrochloride is provided, which comprises hydrogenating L-biopterin in the presence of a catalyst of Pt group metal in the basic substrate containing solvent, potassium hydroxide and potassium dihydrogen phosphate to obtain (6R)-tetrahydrobiopterin hydrochloride, wherein the pH value of the basic substrate is controlled by potassium hydroxide and potassium dihydrogen phosphate in the range of about 10 to about 13.
    Type: Grant
    Filed: November 15, 2010
    Date of Patent: November 25, 2014
    Assignee: Innopharmax, Inc.
    Inventors: Zhen Wang, Dongbing Zhao, Weida Wang, Jingbo Lan, Jinsong You
  • PREPARATION PROCESS OF (6R)-TETRAHYDROBIOPTERIN HYDROCHLORIDE
    Publication number: 20130197222
    Abstract: A preparation process of (6R)-tetrahydrobiopterin hydrochloride is provided, which comprises hydrogenating L-biopterin in the presence of a catalyst of Pt group metal in the basic substrate containing solvent, potassium hydroxide and potassium dihydrogen phosphate to obtain (6R)-tetrahydrobiopterin hydrochloride, wherein the pH value of the basic substrate is controlled by potassium hydroxide and potassium dihydrogen phosphate in the range of about 10 to about 13.
    Type: Application
    Filed: November 15, 2010
    Publication date: August 1, 2013
    Applicant: INNOPHARMAX, INC.
    Inventors: Zhen Wang, Dongbing Zhao, Weida Wang, Jingbo Lan, Jingsong You