Patents by Inventor Jeffrey A. Fleming

Jeffrey A. Fleming 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).

  • 9.alpha.-dehalogenation process
    Patent number: 5426198
    Abstract: The present invention involves improved processes for the dehalogenation of 9.alpha.-halosteroids (I) ##STR1## to produce the corresponding 11.beta.-hydroxy steroids (II) ##STR2## which are known to be useful as pharmaceutical, where the improvements comprise (1) adding the 9.alpha.-halo steroid (I) to the chromium and (2) using catalytic amounts of chromium in the presence of a means of converting chromium (II) to chromium (III).
    Type: Grant
    Filed: January 31, 1990
    Date of Patent: June 20, 1995
    Assignee: The Upjohn Company
    Inventors: Joel E. Huber, Jeffrey A. Fleming