Patents by Inventor Lawrence E. Finkenor

Lawrence E. Finkenor 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 synthesis of 6-bromo-17,21-dihydroxy 3,11,20-trioxo-1,4-pregnadienes 17,21-diesters
    Patent number: 4440690
    Abstract: Disclosed is an improved process for the synthesis of 6-bromo-17,21-dihydroxy-3,11,20-trioxo-1,4,-pregnadienes 17,21-diesters. In particular, this invention relates to the conversion of 17,21-dihydroxy-3,11,20-trioxo-1,4-pregnadienes 17,21-diesters to 6-borom-17,21-dihyroxy-3,11,20-trioxo-1,4-pregnadienes-17-21-diesters via bromination under ionic conditions, e.g. bromine in acetic acid.
    Type: Grant
    Filed: December 27, 1982
    Date of Patent: April 3, 1984
    Assignee: Schering Corporation
    Inventors: Elliot L. Shapiro, Lawrence E. Finkenor