Patents by Inventor Wilhelmus Johannes Wiegers

Wilhelmus Johannes Wiegers 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).

  • Allyl esters of 2-norbornane acrylic acids and 2-norbornylidene propionic aicds and perfumery uses thereof
    Patent number: 5783724
    Abstract: Described are allyl esters of 2-norbornane acrylic acids and 2-norbornylidene propionic acids defined according to the generic structure: ##STR1## wherein the wavy line represents a carbon-carbon single bond or a carbon-carbon double bond; wherein one of the dashed lines is carbon-carbon single bond and the other of the dashed lines is a carbon-carbon double bond; and wherein R represents methyl or hydrogen; as well as methods for augmenting or enhancing the aroma of consumable materials including perfumes, colognes and perfumed articles.
    Type: Grant
    Filed: March 6, 1997
    Date of Patent: July 21, 1998
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Wilhelmus Johannes Wiegers, Marie R. Hanna
  • Allyl esters of 2-norbornane acrylic acids and 2-norbornylidene propionic acids and perfumery uses thereof
    Patent number: 5698514
    Abstract: Described are allyl esters of 2-norbornane acrylic acids and 2-norbornylidene propionic acids defined according to the generic structure: ##STR1## wherein the wavy line represents a carbon-carbon single bond or a carbon-carbon double bond; wherein one of the dashed lines is carbon-carbon single bond and the other of the dashed lines is a carbon-carbon double bond; and wherein R represents methyl or hydrogen; as well as methods for augmenting or enhancing the aroma of consumable materials including perfumes, colognes and perfumed articles.
    Type: Grant
    Filed: May 25, 1995
    Date of Patent: December 16, 1997
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Wilhelmus Johannes Wiegers, Marie R. Hanna