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. 11, 2003
Filed:
Mar. 29, 1999
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
An electric resonance element includes an electric resonator comprising a coil wound around magnetic materials and a capacitor. The electric resonance element is housed in a vessel made of non-magnetic materials. A detection apparatus for detecting the electric resonance element comprises a transmitter for transmitting an electromagnetic wave and a receiver for detecting the echo wave transmitted from the electric resonance element. A moving vehicle is controlled using a system which comprises the electric resonance element buried in a road, and the detection apparatus installed on a vehicle for detecting echo waves transmitted from electric resonance elements. The detection apparatus comprises a transmitter for transmitting an electromagnetic wave specific to the electric resonance element, a receiver that detects the echo wave, and a element or a circuit to suspend the operation of the receiver while the transmitter is on duty.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile