Patents by Inventor Wolf-Dietrich Weber

Wolf-Dietrich Weber 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 synthesizing estrone or estrone derivatives
    Patent number: 4357278
    Abstract: What are disclosed are a multi-step synthesis for the preparation of 9(11)-dehydroestrone 3-methyl ether from 2-methyl,4-methoxy benzaldehyde; 1-(4-methoxy-2-methyl-(phenyl)-3-(1-methyl-2-oxo-5-t-vinyl-cyclopent-r-yl) -propane-1-one, an intermediate in said synthesis; and a method for the preparation of 3-vinylcyclopentanone from 2-vinylcyclopropane-1,1-dicarboxylic acid.
    Type: Grant
    Filed: April 10, 1981
    Date of Patent: November 2, 1982
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Gerhard Quinkert, Wolf-Dietrich Weber, Ulrich Schwartz