HIROKAZU YAMADA

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Telephone relay apparatus, telephone relay system, recording medium...
- Patent number 8,644,483
- Issue date Feb 4, 2014
- NEC Corporation
- Shinya Arao
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Data processing system, central management unit thereof, and data p...
- Patent number 8,537,704
- Issue date Sep 17, 2013
- NEC Corporation
- Teruharu Serada
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Notification apparatus, notification system, method of operating no...
- Patent number 8,451,982
- Issue date May 28, 2013
- NEC Corporation
- Shinya Arao
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
DATA PROCESSING SYSTEM, CENTRAL MANAGEMENT UNIT THEREOF, COMPUTER P...
- Publication number 20110038289
- Publication date Feb 17, 2011
- Teruharu Serada
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
NOTIFICATION APPARATUS, NOTIFICATION SYSTEM, METHOD OF OPERATING NO...
- Publication number 20100008478
- Publication date Jan 14, 2010
- SHINYA ARAO
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
TELEPHONE RELAY APPARATUS, TELEPHONE RELAY SYSTEM, RECORDING MEDIUM...
- Publication number 20100002862
- Publication date Jan 7, 2010
- SHINYA ARAO
- H04 - ELECTRIC COMMUNICATION TECHNIQUE