Patents by Inventor Fritz Exner

Fritz Exner 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).

  • Scents, and scent compositions containing them
    Patent number: 4814322
    Abstract: The invention relates to 1,2-dialkoxyalkenes of the formula ##STR1## in which R denotes an alkyl group having 1 to 3 carbon atoms, andn denotes an integer from 2 to 8 and to the use of 1,2-dialkoxyalkanes and -alkenes of the formula ##STR2## in which R denotes an alkyl group having 1 to 3 carbon atoms,n denotes an integer from 2 to 8, and ##STR3## denotes the CH.sub.3 --CH.sub.2 -- or CH.sub.2 50 CH-- group, as scents.
    Type: Grant
    Filed: March 23, 1988
    Date of Patent: March 21, 1989
    Assignee: Haarmann & Reimer GmbH
    Inventors: Fritz Exner, Detlef Hagena, Rudolf Hopp, Jurgen Nienhaus, Wilhelm Gottsch
  • Process for the production of 2-alkoxy-4-alkenyl phenols
    Patent number: 4071564
    Abstract: The invention concerns new 2-alkoxy-4-alkenyl phenols of the formula ##STR1## wherein R.sub.1 is methyl or ethyl andR.sub.2 and R.sub.3 are different from one another and mean hydrogen or methyl;A process for the preparation of said 2-alkoxy-4-alkenyl phenols comprising condensing 2-alkoxy phenols with butyraldehyde or isobutyraldehyde in the presence of an acid catalyst and thermal splitting the condensation product in the presence of a catalyst; and the use of the new 2-alkoxy-4-alkenyl phenols as odorants.
    Type: Grant
    Filed: April 14, 1975
    Date of Patent: January 31, 1978
    Assignee: Haarmann & Reimer Gesellschaft mit beschrankter Haftung
    Inventors: Kurt Bauer, Reiner Molleken, Fritz Exner