Patents by Inventor Wilhelmus J. Weigers

Wilhelmus J. Weigers 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).

  • Detergent composition
    Patent number: 4131555
    Abstract: Described is a detergent composition containing as a key ingredient, a mixture of compounds having a sandalwood aroma produced according to a process which comprises:(1) Reacting catechol with camphene in the presence of a Friedel Crafts Catalyst to form a first alkylation product; and then(2) Treating said first alkylation product with hydrogen in the presence of a hydrogenation catalyst, thus forming, initially, diol intermediates and then, on continuing the hydrogenation, the mixture useful in the perfume compositions of our invention.
    Type: Grant
    Filed: October 31, 1977
    Date of Patent: December 26, 1978
    Assignee: International Flavors & Fragrances Inc.
    Inventors: John B. Hall, Wilhelmus J. Weigers