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. 14, 1989
Filed:
Jul. 31, 1987
William H Graves, Jr, Pfafftown, NC (US);
Gary W Wallace, Winston-Salem, NC (US);
Bruce P Bradford, Lewisville, NC (US);
Carolyn R Carpenter, Winston-Salem, NC (US);
Kenneth W Smith, Winston-Salem, NC (US);
Howard C Toft, Clemmons, NC (US);
R. J. Reynolds Tobacco Company, Winston-Salem, NC (US);
Abstract
Extruded smokable material is provided by extruding a moist mixture of divided tobacco and a binding agent which includes locust bean gum and xanthan gum. The mixture is subjected to temperatures about 80.degree. C. during extrusion such that this binding agent components are solubilized and the binding agent is activated. The adhesive character of the binding agent is believed to be provided by heat initiated inter polymer chain associations between the component binders. The tobacco material and binding agent mixture is extruded above the temperature at which the activated agent forms a gel. The extrudated is cooled and the binding agent forms a gel, resulting in a resilient smokable material.