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:
Jun. 09, 1981
Filed:
Aug. 28, 1979
Applicant:
Inventor:
Karl Knop, Zurich, CH;
Assignee:
RCA Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
356434 ; 364850 ;
Abstract
The ratio of the intensity of two light beams is determined by an apparatus which includes a chopper wheel for chopping one of the light beams, a photodetector for detecting the intensity of both light beams applied simultaneously thereto, and a logarithmic amplifier for amplifying the current produced by the photodetector. The AC component of the logarithmically amplified current represents the ratio of the intensity of the two light beams.
Quick Actions:
Knop, Karl. (1981). Apparatus and method for measuring the ratio of two signals (U.S. Patent No. 4272197). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4272197
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile