Keiichi Okuyama

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Transmission apparatus and processing method thereof
- Patent number 9,106,331
- Issue date Aug 11, 2015
- NEC Corporation
- Keiichi Okuyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Clock supply circuit and clock supply method
- Patent number 7,856,075
- Issue date Dec 21, 2010
- NEC Corporation
- Makoto Kon
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Hitless switch device and method of switching between different paths
- Patent number 5,825,821
- Issue date Oct 20, 1998
- NEC Corporation
- Keiichi Okuyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Transmission path switching apparatus
- Patent number 5,677,931
- Issue date Oct 14, 1997
- NEC Corporation
- Keiichi Okuyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Non-instantaneous disconnection switching system
- Patent number 5,651,027
- Issue date Jul 22, 1997
- NEC Corporation
- Keiichi Okuyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
TRANSMISSION APPARATUS AND PROCESSING METHOD THEREOF
- Publication number 20140086572
- Publication date Mar 27, 2014
- NEC Corporation
- Keiichi Okuyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
INTERFACE CIRCUIT
- Publication number 20100329675
- Publication date Dec 30, 2010
- KEIICHI OKUYAMA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
CLOCK SUPPLY CIRCUIT AND CLOCK SUPPLY METHOD
- Publication number 20080069285
- Publication date Mar 20, 2008
- NEC Corporation
- Makoto KON
- H03 - BASIC ELECTRONIC CIRCUITRY