Patents by Inventor Henricus Petrus Antonius Johannes Maria van den Boom

Henricus Petrus Antonius Johannes Maria van den Boom 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).

  • Sulfatation of estrogen mixtures
    Patent number: 5998639
    Abstract: The invention relates to a method for the preparation of a mixture of sulfated estrogens containing delta(8,9)-dehydro estrone [delta(8,9)DHE] or derivatives thereof.
    Type: Grant
    Filed: May 7, 1997
    Date of Patent: December 7, 1999
    Assignee: Akzo Nobel, N.V.
    Inventors: Petrus Hendricus Raijmakers, Robert Gerrit Hofstraat, Henricus Petrus Antonius Johannes Maria van den Boom