Patents by Inventor Hai Zhao

Hai 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).

  • Process for the preparation of optically active 2-arylcyclohexanols
    Patent number: 5420366
    Abstract: The present invention provides a process for preparing optically active 2-arylcyclohexanol and its esters and ethers and which process comprises the step of subjecting 1-aryl-cyclohexane-1,2 diol and its diethers and diesters to hydrogenolysis conditions to form said cyclohexanol and its esters and ethers.
    Type: Grant
    Filed: May 11, 1994
    Date of Patent: May 30, 1995
    Assignee: Hoechst Celanese Corporation
    Inventor: Shu-Hai Zhao