Patents Assigned to Haarman & Reimer GmbH
  • Patent number: 6703218
    Abstract: The present invention relates to a process for the preparation of linalool oxide or of linalool oxide-containing mixtures, in which linalool or linalool-containing mixtures are oxidized in the presence of enzymes.
    Type: Grant
    Filed: November 2, 2001
    Date of Patent: March 9, 2004
    Assignee: Haarman & Reimer GmbH
    Inventors: Jens-Michael Hilmer, Ian-Lucas Gatfield
  • Patent number: 6617473
    Abstract: The invention relates to a preparation process for derivatives by catalytic dehydrogenation of dibenzosuberone derivatives.
    Type: Grant
    Filed: February 26, 2002
    Date of Patent: September 9, 2003
    Assignee: Haarman & Reimer GmbH
    Inventors: Stefan Lambrecht, Horst Surburg
  • Patent number: 6391365
    Abstract: 3,6-Dimethyl-2(3H)-benzofuranone is a new, valuable flavor material. A process for its industrial-scale preparation was developed.
    Type: Grant
    Filed: April 23, 1999
    Date of Patent: May 21, 2002
    Assignee: Haarman & Reimer GmbH
    Inventors: Stefan Lambrecht, Horst Surburg, Matthias Güntert, Volkmar Koppe
  • Patent number: 4664755
    Abstract: Process for the purification of crude .beta.-phenylethyl alcohol by azeotropic distillation in the presence of alkanolamines in which the alkylene chain contains 2 to 4 carbon atoms and is optionally substituted by 1 to 4 C.sub.1 -C.sub.3 -alkyl groups.
    Type: Grant
    Filed: November 27, 1985
    Date of Patent: May 12, 1987
    Assignee: Haarman & Reimer GmbH
    Inventors: Jurgen Nienhaus, Rudolf Hopp
  • Patent number: 4209445
    Abstract: Process for the preparation of piperonylidenecrotonic acids amides of the formula ##STR1## in which R.sub.1 and R.sub.2 have the meaning given in the disclosure wherein piperonal is reacted with crotonic acid amides of the formula ##STR2## in the presence of hydroxides of the formulaA.sup.+ OH.sup.-in whichA.sup.+ represents a quaternary ammonium or phosphonium group or an alkali metal complex with neutral organic complex ligands,and polar aprotic or polar, sterically hindered protic organic solvents which are inert under the reaction conditions.
    Type: Grant
    Filed: December 13, 1978
    Date of Patent: June 24, 1980
    Assignee: Haarman & Reimer GmbH
    Inventors: Hermann Oediger, Andreas Schulze
  • Patent number: 4209446
    Abstract: Process for the preparation of piperonylidenecrotonic acid amides of the formula ##STR1## in which R.sub.1 and R.sub.2 have the meaning given in the disclosure wherein piperonal is reacted with crotonic acid amides of the formula ##STR2## in the presence of alkali metal hydroxides and dipolar aprotic diluents which are inert under the reaction conditions.
    Type: Grant
    Filed: December 13, 1978
    Date of Patent: June 24, 1980
    Assignee: Haarman & Reimer GmbH
    Inventors: Andreas Schulze, Hermann Oediger