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:
Sep. 26, 2000
Filed:
May. 25, 1999
Applicant:
Inventor:
Rein S Teder, Bloomington, MN (US);
Assignee:
Libbey-Owens-Ford Co., Toledo, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05B / ;
U.S. Cl.
CPC ...
318483 ; 318444 ; 318480 ; 318D / ; 1525 / ; 1525012 ; 1525016 ; 1525017 ;
Abstract
A moisture sensor for detecting moisture on the surface of a transparent material. The moisture sensor includes one or more emitters for producing moisture sensing signals which are influenced by moisture on the transparent material, and one or more detectors for receiving the moisture sensing signals and producing a detector output signal. The moisture sensor further includes a pre-demodulation gain and filtering circuit having high order filtering for removing most of the unwanted ambient light noise and EMI interference from the detector output signal for the accurate detection of moisture in the presence of noise.