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. 09, 1996
Filed:
Feb. 14, 1994
Applicant:
Inventors:
Marco Bencivenni, Bologna, IT;
Maurizio Cotti, San Giovanni in Persiceto, IT;
Armando Neri, Bologna, IT;
Assignee:
G.D Societa' Per Azioni, Bologna, IT;
Primary Examiner:
Int. Cl.
CPC ...
A24C / ;
U.S. Cl.
CPC ...
131280 ; 131905 ; 131908 ; 209536 ;
Abstract
A cigarette, with a cigarette paper and a filter paper of different colors and separated by a boundary line with a given nominal position, is fed past a pair of optical sensors located on either side of the nominal position of the boundary line. The optical sensors generate a pair of electric signals each related to the color of the respective monitored portion of the cigarette, and which are compared with each other; and, in the event the difference between the signals is below a given threshold value, an error signal is generated for rejecting the cigarette.