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. 16, 1985
Filed:
Dec. 18, 1981
Akinori Masuko, Fukaya, JP;
Tokyo Shibaura Denki Kabushiki Kaisha, Kawasaki, JP;
Abstract
A transmitting section periodically radiates a signal wave. A receiving section receives the signal wave radiated from the transmitting section and reflected from the monitored region to produce the received signal. A sampling circuit samples the output signal from the receiving section at given time intervals. A memory stores the output signal from the sampling circuit at the time of one period of transmission, and a judging circuit compares the output signal from the sampling circuit at each transmission with the signal previously stored in the memory to detect a change in a state of an object to be detected.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile