Nobuhiro Monai

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Patents Grantslast 30 patents

Information Patent Grant
DTMF tone signal transmission method and DTMF tone signal transmiss...
- Patent number 8,311,033
- Issue date Nov 13, 2012
- NEC Infrontia Corporation
- Nobuhiro Monai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
IP telephony method and IP telephone system
- Patent number 7,508,818
- Issue date Mar 24, 2009
- NEC Infrontia Corporation
- Nobuhiro Monai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
System for automatically selecting voice data transmission and rece...
- Patent number 7,301,937
- Issue date Nov 27, 2007
- NEC Infrontia Corporation
- Nobuhiro Monai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
DTMF tone signal transmission method and DTMF tone signal transmiss...
- Publication number 20050243872
- Publication date Nov 3, 2005
- NEC INFRONTIA CORPORATION
- Nobuhiro Monai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
IP telephony method and IP telephone system
- Publication number 20050207431
- Publication date Sep 22, 2005
- NEC INFRONTIA CORPORATION
- Nobuhiro Monai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
System for automatically selecting voice data transmission and rece...
- Publication number 20050099996
- Publication date May 12, 2005
- NEC INFRONTIA CORPORATION
- Nobuhiro Monai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE