The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 03, 2021
Filed:
Feb. 03, 2017
Symrise Ag, Holzminden, DE;
Edison Diaz, Goslar, DE;
Daniel Kohrs, Holzminden, DE;
Katharina Michels, Seesen, DE;
Sebastian Buch, Brakel-Riesel, DE;
Symrise AG, Holzminden, DE;
Abstract
Suggested is a method for the extraction of fragrances from natural starting material consisting of the following steps: (a) providing a sample of the natural starting material in a pressure proof sample container; (b) bringing in the sample in contact with liquefied petroleum gas of propane and/or butane gas, preferably; (c) extracting the fragrances from the natural starting material provided in step (b); (d) venting of the pressure proof sample container, while the liquefied petroleum gas is evaporated and the fragrances is maintained as residue in the container; and optionally (e) dissolving the fragrances in a suitable solvent.