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:
Nov. 01, 1994
Filed:
Jul. 22, 1991
Donald A Newton, Winston-Salem, NC (US);
Timothy R Lang, Willoughby, AU;
R. J. Reynolds Tobacco Company, Winston-Salem, NC (US);
Abstract
Tobacco cut filler is subjected to extraction conditions using tap water as a solvent using a counter current, counter rotating, upwardly inclined extraction apparatus. The extracted tobacco material which is collected undergoes no significant physical degradation while having a high level of water extractables removed therefrom. Aqueous tobacco extracts having relatively high levels of tobacco extractables also can be provided. Extracted tobacco material also can be re-equilibrated with a tobacco extract by contacting the extracted tobacco material and an aqueous tobacco extract in a counter current, counter rotating, upwardly inclined extraction apparatus.