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:
May. 12, 1981
Filed:
May. 17, 1979
Henry B Merritt, Richmond, VA (US);
George F Kite, Indianapolis, IN (US);
Philip Morris Incorporated, New York, NY (US);
Abstract
Tobacco having at least about 6 percent moisture is impregnated with ammonia and carbon dioxide to introduce into the tobacco preferably from about 3 percent to about 6 percent by weight of ammonia and from about 3 percent to about 8 percent of carbon dioxide based on the weight of the tobacco. The impregnated tobacco is then heated for from about 5 to about 60 minutes at a temperature of from about 80.degree. to about 120.degree. C. in an open system to produce a tobacco product, having an OV of about 6% or less. The resulting tobacco product is, either with or without being bulked at room temperature, thereafter contacted with dry steam, preferably at low velocity, at a temperature which may be from about 100.degree. C. to about 150.degree. C., but is preferably from about 100.degree. C. to about 120.degree. C. for a time sufficient to puff the tobacco, preferably from about 1/4 to about 3 minutes. A humid gas, such as air of high humidity, may be used in place of the dry steam, in which case the temperature may be between about 80.degree. C. and about 150.degree. C. and is preferably from about 80.degree. C. to about 120.degree. C.