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:
Oct. 09, 2001
Filed:
Dec. 01, 1998
Jiro Nakasu, Tokyo, JP;
Hideki Hayashi, Tokyo, JP;
Tomoaki Tsukada, Tokyo, JP;
Kunio Kodaka, Tokyo, JP;
Yasushi Onooka, Tokyo, JP;
Kazuhiro Yamamoto, Tokyo, JP;
Shunji Yamanaka, Tokyo, JP;
Yuji Mitani, Kanagawa, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A switching system (,) has, in addition to an ordinary accounting function, an origination-only accounting control unit,to monitor the number of message units used by an origination-only portable telephone (,B) identified by a terminal identification number and to deny the origination of a call by the origination-only portable telephone (,B) upon the increase of the number of used message units to a predetermined number. The origination-only accounting control unit (,) accepts the origination of a call made by the origination-only portable telephone (,B) when a prescribed input about the origination-only portable telephone (,B) is given thereto by a system operator by operating a predetermined terminal device (,) or the like after the denial of origination of a call by the origination-only portable telephone (,B).