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. 29, 1978
Filed:
Mar. 01, 1977
Roger W Hedge, Lymington, GB;
Brown & Williamson Tobacco Corporation, Louisville, KY (US);
Abstract
A smoking material comprises a binder consisting wholly or in part of a thermo-gelling substituted cellulose having a degree of substitution of at least 1.5 methoxyl groups per anhydroglucose unit, and an inert water-insoluble inorganic diluent such as chalk, which material has a density reduced by the entrainment and dispersion of air therein. The binder may comprise a thermo-gelling methyl cellulose having a degree of substitution of at least 1.5 methoxyl groups per anhydroglucose unit and/or an additionally substituted methyl cellulose having a degree of substitution of at least 1.5 methoxyl groups per anhydroglucose unit. It may additionally include a thermo-gelling cellulose having a lower degree of substitution or a non-thermo-gelling substituted cellulose.