Patent 無線通信モジュール 山口陽, 上原一浩, 西川健二郎, 川島宗也, 望月秀幸 Application no. 特願2008-087973 Date applied Mar 28, 2008 Announcement no. 特開2009-246478 Date announced Oct 22, 2009 Patent/Registration no. 特許4755666 Date registered Jun 3, 2011 Date issued