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. 23, 1996
Filed:
Jun. 29, 1994
Eugene K Achter, Lexington, MA (US);
David Lieb, Lexington, MA (US);
John S Beaty, Belmont, MA (US);
Helmut W Klotzsch, Groton, MA (US);
Craig D Thompson, Natick, MA (US);
Jonathan Bosworth, Acton, MA (US);
Thermedics Detection, Inc., Waltham, MA (US);
Abstract
To detect a contaminant in a moving container, radiant energy is directed into the moving container. Thereafter, a level of radiant energy scattered by contents of the moving container is detected. The presence of a contaminant is indicated when the detected level of scattered radiant energy differs from a threshold level. Scattered radiant energy detected by the system includes that scattered by turbid materials within the container and that scattered by foam within the container. Detection of turbid materials or foam may be combined with spectral contaminant detection.