Patents by Inventor Joseph K. Wichman

Joseph K. Wichman 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 preparing 23,25-dihydroxyvitamin D.sub.3
    Patent number: 4367177
    Abstract: A process for preparing 23,25-dihydroxyvitamin D compounds and hydroxy-protected derivatives thereof, and novel intermediates used in the process, are provided.
    Type: Grant
    Filed: April 15, 1981
    Date of Patent: January 4, 1983
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Hector F. DeLuca, Heinrich K. Schnoes, Joseph K. Wichman