Patents by Inventor Djurre S. Postma

Djurre S. Postma 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).

  • Methyl substituted tetrahydroindanone and perfumery uses thereof
    Patent number: 5137869
    Abstract: Described is the methyl substituted tetrahydroindanone having the structure: ##STR1## and uses thereof in augmenting or enhancing the aroma of consumable materials selected from the group consisting of perfume compositions, colognes and perfumed articles.
    Type: Grant
    Filed: September 13, 1991
    Date of Patent: August 11, 1992
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Mark A. Sprecker, Robert P. Belko, Eleanor Fox, Alphonsus P. M. Maas, Djurre S. Postma