Patents by Inventor Guoji Zhang

Guoji Zhang 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).

  • Publication number: 20050250962
    Abstract: A process of producing dicreatine malate with high purity, includes the steps of providing a predetermined amount of malic acid, agitating a predetermined amount of anhydrous alcohol to the malic acid to obtain a first solution, filtering the first solution to form a clear solution, agitating a predetermined amount of creatine to the clear solution to obtain a second solution, centrifuging the second solution to obtain a wet dicreatine malate and a separated alcohol, and drying the wet dicreatine malate to produce a dicreatine. Because of its low energy consumption, this process produces dicreatine malate effectively.
    Type: Application
    Filed: May 10, 2004
    Publication date: November 10, 2005
    Inventor: Guoji Zhang
  • Patent number: 6326513
    Abstract: The present invention relates to a process for producing creatine or creatine-monohydrate, comprising the step of reacting N-methylglycine, sodium N-methylglycinate and/or potassium N-methylglycinate with S-methylisothiourea and/or S-methylisothiourea sulfate in water or in a mixture of water and an alcohol solvent under the temperature from 15° C. to 140° C. and a pH of 7-13. By using the process of the present invention creatine or creatine-monohydrate with a higher purity can be produced at a much lower cost.
    Type: Grant
    Filed: August 28, 2000
    Date of Patent: December 4, 2001
    Assignee: Tianjin Tiancheng Pharmaceutical Co., LTD
    Inventors: Lihua An, Yuwen Zheng, Guoji Zhang