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:
Apr. 13, 1982
Filed:
Jul. 11, 1980
Applicant:
Inventors:
John H Sexstone, Anchorage, KY (US);
Tom Lewis, Louisville, KY (US);
Ken Milliner, Louisville, KY (US);
Assignee:
Brown & Williamson Tobacco Corporation, Louisville, KY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A24D / ;
U.S. Cl.
CPC ...
425385 ; 131 91 ; 264293 ; 425290 ; 425291 ; 493 42 ; 493 43 ;
Abstract
Cigarette filters having grooves therein are prepared by subjecting cigarette filters to a groove-making device which includes heated groove-making elements therein, the grooves being formed by the use of heat and pressure as the cigarette filters come in contact with the groove-making elements.
Quick Actions:
Sexstone, John. (1982). Apparatus for making grooves in tobacco smoke filters (U.S. Patent No. 4324540). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4324540
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile