Patents by Inventor Robert F. Tavares

Robert F. Tavares 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).

  • Novel process for the synthesis of tricyclo[6.2.2.0.sup.3,8 ]dodecane derivatives
    Patent number: 4067906
    Abstract: A novel process for the preparation of tricyclo[6.2.2.0.sup.3,8 ]dodecane derivatives is presented. This novel process is applied to the synthesis of the odorant 4-acetyl-1,7,7-trimethyltricyclo[6.2.2.0.sup.3,8 ]-3-dodecene, also known as 4-aceto-6,8a-ethano-1,1,6-trimethyl-1,2,3,5,6,7,8,8a-octahydronaphthalene.
    Type: Grant
    Filed: August 3, 1976
    Date of Patent: January 10, 1978
    Assignee: Givaudan Corporation
    Inventors: Robert F. Tavares, Elliot Katten
  • 2,4-Dimethyl-2-phenyl-4-pentenal
    Patent number: 3996290
    Abstract: 2,4-Dimethyl-2-phenyl-4-pentenal possesses a strong rose geranium type odor which is especially valuable in perfumery. Compounds of closely related structure do not possess this quality.
    Type: Grant
    Filed: June 11, 1975
    Date of Patent: December 7, 1976
    Assignee: Givaudan Corporation
    Inventors: Robert F. Tavares, Jack Agran
  • 4,7-Dihydro-2-(3-pentyl)-1,3-dioxepin as a flavorant
    Patent number: 3953614
    Abstract: An unsaturated cyclic acetal, 4,7-dihydro-2-(3-pentyl)-1,3-dioxepin, prepared by the condensation of 2-butene-1,4-diol with 2-ethyl-1-butanal is useful as a flavor agent for foods and an odorant for perfumes.
    Type: Grant
    Filed: May 15, 1974
    Date of Patent: April 27, 1976
    Assignee: Givaudan Corporation
    Inventors: Robert F. Tavares, Jack Agran, William M. Easter, Leslie Blau
  • Improving the odor of perfume by novel cyclic ketal
    Patent number: 3936398
    Abstract: An unsaturated ketal, 4,7-dihydro-2-isopentyl-2-methyl-1,3-dioxepin prepared by the condensation of 2-butene-1,4-diol with 5-methyl-2-hexanone is useful as an odorant for perfume.
    Type: Grant
    Filed: May 15, 1974
    Date of Patent: February 3, 1976
    Assignee: Givaudan Corporation
    Inventors: Robert F. Tavares, Jack Agran, William M. Easter