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:
Jul. 04, 1989
Filed:
Feb. 11, 1988
Applicant:
Inventors:
Kenneth W White, Lewisville, NC (US);
Luis M Dominguez, Winston-Salem, NC (US);
Bain C McConnell, Winston-Salem, NC (US);
Assignee:
R. J. Reynolds Tobacco Company, Winston-Salem, NC (US);
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
250560 ; 250561 ; 356448 ;
Abstract
A method and apparatus is disclosed that detects the specular reflections from the surface of a travelling web to determine if a material is coated on the web. The web is illuminated with diffuse light and the reflected light is received by a detector which determines the presence and width of the coated material based on the specular reflections from the coated surface of the travelling web.