Keiji Akiyama

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Patents Grantslast 30 patents

Information Patent Grant
Communication device, communication system, and communication method
- Patent number 11,177,891
- Issue date Nov 16, 2021
- SONY SEMICONDUCTOR SOLUTIONS CORPORATION
- Keiji Akiyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Wireless communication apparatus and method, and computer program
- Patent number 7,532,665
- Issue date May 12, 2009
- Sony Corporation
- Keiji Akiyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Communication system, communication terminal and communication method
- Patent number 6,985,714
- Issue date Jan 10, 2006
- Sony Corporation
- Keiji Akiyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Communication apparatus for TDMA system
- Patent number 5,684,806
- Issue date Nov 4, 1997
- Sony Corporation
- Keiji Akiyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
COMMUNICATION DEVICE, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD
- Publication number 20200169328
- Publication date May 28, 2020
- Sony Semiconductor Solutions Corporation
- KEIJI AKIYAMA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Wireless communication apparatus and method,and computer program
- Publication number 20050276319
- Publication date Dec 15, 2005
- SONY CORPORATION
- Keiji Akiyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Communication system, communication terminal and communication method
- Publication number 20030129978
- Publication date Jul 10, 2003
- SONY CORPORATION
- Keiji Akiyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE