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:
Feb. 03, 2004
Filed:
Oct. 22, 1999
Applicant:
Inventors:
Zack A. Shana, Franklin, WI (US);
Carljon Mercier, Milwaukee, WI (US);
Assignee:
Marquette University, Milwaukee, WI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 2/100 ; G01N 2/141 ;
U.S. Cl.
CPC ...
G01N 2/100 ; G01N 2/141 ;
Abstract
A sensor is capable of detecting clear or opaque materials. The sensor can be disposed around a clear tube which carries a material such as liquid. The sensor utilizes a thin beam light source and a wide area photo detector. A window comparator determines the presence or absence of a material such as liquid.