Patents by Inventor Roger Chappaz

Roger Chappaz 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).

  • Esters of 1,3-dimethyl-but-3-en-1-yl, their utilization as perfuming and flavoring ingredients and compositions containing same
    Patent number: 4387047
    Abstract: Use of certain ester derivatives of 1,3-dimethyl-but-3-en-1-yl as perfuming and flavoring ingredients. These ester derivatives possess the following formula ##STR1## wherein symbol R represents a hydrogen atom, a saturated or an unsaturated, linear or branched lower alkyl having 1 to 6 carbon atoms, or an aryl radical. The compounds of formula (I) are new chemical entities.
    Type: Grant
    Filed: January 6, 1981
    Date of Patent: June 7, 1983
    Assignee: Firmenich SA
    Inventors: Erling Sundt, Walter Schenk, Roger Chappaz, Michel Joyeux