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:
Apr. 12, 1994
Filed:
Nov. 12, 1991
Wynn R Raymond, Chesterfield, VA (US);
Robert W Hale, Bon Air, VA (US);
Philip Morris Incorporated, New York, NY (US);
Abstract
Fractionated plant extracts, particularly essentially nicotine-free tobacco extracts, useful as tobacco flavorants and methods for preparing and using the same are described herein. These fractionated extracts are stable, non-volatile and relatively odorless under conditions of smoking article or smoking substitute article manufacture and storage, but when thermally provoked, the extracts deliver characteristic flavor to smoking articles or smoking substitute articles. The fractionated plant extracts may be prepared by contacting plant matter with a solvent to produce a crude plant extract; removing the solvent from this plant extract; and isolating a fraction of this extract that when thermally provoked provides the characteristic aroma and flavor of the plant by size exclusion chromatography and monitoring the fraction's integrity by suitable detection means.