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:
Jul. 03, 1990
Filed:
Jul. 18, 1988
Masayuki Makino, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A cordless telephone system includes a fixed unit and a portable unit which communicate with each other over a radio link. The portable unit includes a rechargeable battery, and a battery saving device for interrupting a power supply to predetermined sections of the portable unit in response to a control signal. The fixed unit includes a charging device for converting and AC voltage into a DC voltage to produce a charging voltage, and a detecting device for detecting when the rechargeable battery is being charged by the charging voltage, and for outputting a detection signal in response thereto. The fixed unit further includes a supplying device which is responsive to the detection signal for outputting the control signal and for supplying the control signal to the portable unit together with the charging voltage.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile