Issued Patents All Time
Showing 26–50 of 103 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10230487 | Optical transmitter, optical communication device, optical communication system, and optical transmission method | Tomoyuki Hino, Shinsuke Fujisawa, Hitoshi Takeshita | 2019-03-12 |
| 10211923 | Optical network system, optical node device, and optical path setting method | Hitoshi Takeshita, Tomoyuki Hino, Shinsuke Fujisawa | 2019-02-19 |
| 10193651 | Optical network controller and optical network control method | Hitoshi Takeshita, Shinsuke Fujisawa, Ryuichi Ikematsu, Tomoyuki Hino | 2019-01-29 |
| 9979468 | Optical communication system, optical node device, and optical path setting method | Shinsuke Fujisawa, Hitoshi Takeshita, Tomoyuki Hino | 2018-05-22 |
| 9621272 | Optical transmission device and control method for the same | Kenji Mizutani | 2017-04-11 |
| 9609401 | Optical switch, optical transmission device, and optical switching method | Hitoshi Takeshita, Ryuichi Ikematsu | 2017-03-28 |
| 9593240 | Thermosetting resin composition | Takashi Matsuo, Kiichi Kawabata, Yoshiko Ueno, Koichi Ayama | 2017-03-14 |
| 9512273 | Thermosetting resin composition | Takashi Matsuo, Kiichi Kawabata, Koichi Ayama | 2016-12-06 |
| 9503270 | Communication device and power saving method thereof in data transmission system | — | 2016-11-22 |
| 9160529 | Secret communication system and method for generating shared secret information | Akihiro Tanaka, Wakako Maeda, Seigo Takahashi | 2015-10-13 |
| 9115243 | Organosilicon compound, thermosetting resin composition containing the organosilicon compound, hardening resin and encapsulation material for optical semiconductor | Kiichi Kawabata, Takashi Matsuo, Kiyoshi Sakai, Koichi Ayama | 2015-08-25 |
| 9112677 | Communication device and cryptographic key creation method in cryptographic key sharing system | Akihiro Tanaka | 2015-08-18 |
| 8987358 | Compound including organopolysiloxane or silsesquioxane skeleton having isocyanuric skeleton, epoxy group and SiH group, thermosetting resin composition containing the compound as adhesion-imparting agent, hardened material and sealing agent for optical semiconductor | Kiichi Kawabata, Takashi Matsuo, Yoshiko Watanabe, Koichi Ayama | 2015-03-24 |
| 8952108 | Organic silicon compound, thermosetting composition containing said organic silicon compound, and sealing material for optical semiconductor | Daisuke Inoki, Kiichi Kawabata, Takashi Matsuo | 2015-02-10 |
| 8949300 | Circuit and method for controlling quality of random numbers | Akihiro Tanaka, Seigo Takahashi, Wakako Maeda | 2015-02-03 |
| 8946357 | Organosilicon compound, thermosetting resin composition containing the organosilicon compound, hardening resin and encapsulation material for optical semiconductor | Kiichi Kawabata, Takashi Matsuo, Kiyoshi Sakai, Koichi Ayama | 2015-02-03 |
| 8929734 | Multiplexer/demultiplexer and multiplexing/demultiplexing method | Kenji Mizutani, Masahiro Sakauchi, Tomoyuki Hino, Masahiro Hayashitani, Hiroyuki Takagi | 2015-01-06 |
| 8833511 | Insulator for audio and method for evaluating same | Teruo Maruyama, Kozo Okamoto, Satoki Yamaguchi | 2014-09-16 |
| 8718485 | Quantum key distribution system, optical transmitter, optical modulation control circuit, and optical modulation control method | Akihiro Tanaka, Seigo Takahashi, Wakako Maeda | 2014-05-06 |
| 8638942 | Method and system for managing shared random numbers in secret communication network | Wakako Maeda, Seigo Takahashi, Akihiro Tanaka | 2014-01-28 |
| 8391491 | Communication system and synchronization control method | Akihiro Tanaka, Seigo Takahashi, Wakako Maeda | 2013-03-05 |
| 8273843 | Organosilicon compound and thermosetting resin composition containing the same | Kazuhiro Yoshida | 2012-09-25 |
| 8204231 | Method and device for managing cryptographic keys in secret communications network | Wakako Maeda, Akihiro Tanaka, Seigo Takahashi | 2012-06-19 |
| 8184989 | Communication system and timing control method | Wakako Maeda, Akihiro Tanaka, Seigo Takahashi | 2012-05-22 |
| 8171354 | Communication system and method for controlling the same | Akihiro Tanaka, Seigo Takahashi, Wakako Maeda | 2012-05-01 |