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. 25, 2002
Filed:
Aug. 25, 2000
Applicant:
Inventor:
Toshihiro Tsumura, Osaka, JP;
Assignee:
Tsumura Research Institute Co., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B 1/38 ; H04M 1/00 ;
U.S. Cl.
CPC ...
H04B 1/38 ; H04M 1/00 ;
Abstract
A telephone regulation system to regulate usage of a telephone terminal that carries out conversation using a radio wave includes an approach recognition device provided at the neighborhood of an approach path to a predetermined region to transmit a first command through a weak wave to a portable telephone terminal passing through the neighborhood and entering the predetermined region, and a departure recognition device provided in the neighborhood of a departure path from the predetermined region to transmit a second command through a weak wave to a telephone terminal passing through the neighborhood and departing from the predetermined region.