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:
Jan. 21, 1997
Filed:
Jun. 27, 1994
Applicant:
Inventors:
Giuseppe Di Stefano, Ferrara, IT;
Marco Ghini, Lazzaro Di Savena, IT;
Armando Neri, Bologna, IT;
Antonio Gamberini, Bologna, IT;
Assignee:
G.D Societa' Per Azioni, Bologna, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01V / ;
U.S. Cl.
CPC ...
2502221 ; 25055945 ;
Abstract
The filling of a cigarette is controlled by detecting a brightness curve of at least one part of the open end of the cigarette, processing the resulting brightness curve to obtain a contrast index, and comparing the resulting contrast index with an equivalent index of a correctly filled cigarette to obtain a signal indicating acceptance of the cigarette under observation.