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:
Jun. 04, 1996
Filed:
Apr. 22, 1992
Applicant:
Inventors:
John A Luke, Eastleigh, GB;
William J Stone, Southampton, GB;
Assignee:
British-American Tobacco Company Limited, Middlesex, GB;
Primary Examiner:
Int. Cl.
CPC ...
B29C / ;
U.S. Cl.
CPC ...
264 453 ; 264 53 ; 264140 ; 264148 ; 264157 ; 2642101 ; 264238 ;
Abstract
A particulate plastics material, a polysaccharide and water are fed to an extruder which is operated under such heat and pressure conditions that upon emergence of the extrudate from the extruder die, the extrudate assumes a cross-section greater than that of the exit orifice of the die. The extrudate is then further processed, either by shredding to produce particulate material for feeding to filter-making section of a cigarette making machine, or by forming into smoking article filter rod lengths.