Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10681659 | Synchronization system and communication device | Hiroshi Nishimura, Kota Tsuchie | 2020-06-09 |
| 10212584 | Network registration system for registering communicator on network and network device therefor | Masanori Nozaki, Yuzuru Igarashi, Yoshihisa Nakano, Kiyoshi Fukui | 2019-02-19 |
| 9729311 | Proxy system for security processing without entrusting certified secret information to a proxy | Jun Nakashima, Kiyoshi Fukui | 2017-08-08 |
| 9197418 | Communication system for authenticating messages with uniquely specified genuine information | — | 2015-11-24 |
| 9059839 | Communication terminal using a temporary network key for assembling a secure communication frame | Jun Nakashima, Kiyoshi Fukui | 2015-06-16 |
| 8578163 | Communication method, mesh network system and communication terminal | — | 2013-11-05 |
| 8503677 | Communication system and device | Kiyoshi Fukui, Jun Nakashima | 2013-08-06 |
| 8364962 | Communication data freshness confirmation system | Kiyoshi Fukui | 2013-01-29 |
| 8340061 | Transmission terminal, reception terminal, and information distribution system | Toshihisa Nakai, Kiyoshi Fukui | 2012-12-25 |
| 8209536 | Message authentication system, message transmission apparatus and message reception apparatus | — | 2012-06-26 |
| 8209761 | Wireless network system, information providing apparatus and wireless terminal | — | 2012-06-26 |
| 8205085 | Key update system, key management device, communication terminal, and key information construction method for multihop network | — | 2012-06-19 |
| 8132234 | Unauthorized terminal inferring system, unauthorized terminal inferring device, and communications terminal device | — | 2012-03-06 |
| 8045693 | Message reception confirmation method, communications terminal and message reception confirmation system | — | 2011-10-25 |
| 7606271 | Communication timing control apparatus, communication timing control method, node, and communication system | Masaaki Date, Yukihiro Morita, Shigeru Fukunaga | 2009-10-20 |