Patents by Inventor Rui-Lin Li

Rui-Lin Li 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).

  • Use of A-Nor-steroids as malignant cells growth inhibitors
    Patent number: 5001120
    Abstract: A-Nor-5.alpha.-androstane compounds, such as the dipropionate and disuccinate esters of 2.alpha.,17.alpha.-diethynyl-A-Nor-5.alpha.-androstane-2.beta.,17.beta.-di ol and the corresponding 2.alpha.,17.alpha.-diol stereoisomers have an inhibitory effect on malignant cell growth and can be used to treat various carcinomas in mammals.
    Type: Grant
    Filed: May 10, 1989
    Date of Patent: March 19, 1991
    Assignee: Natural Pharmacia International, Inc.
    Inventors: Rui-Lin Li, David Y. Lee, Qi-Lu Cheng