Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12034862 | Anonymous broadcast method, key exchange method, anonymous broadcast system, key exchange system, communication device, and program | Tetsutaro Kobayashi, Yuto KAWAHARA, Hitoshi Fuji, Kazuki Yoneyama | 2024-07-09 |
| 11985250 | Anonymous broadcast method, key exchange method, anonymous broadcast system, key exchange system, communication device, and program | Tetsutaro Kobayashi, Yuto KAWAHARA, Hitoshi Fuji, Kazuki Yoneyama | 2024-05-14 |
| 11902421 | Server device, communication terminal, communication system, and program | Yuki OKANO, Tetsutaro Kobayashi | 2024-02-13 |
| 11765137 | Message transmission system, communication terminal, server apparatus, message transmission method, and program | Yuki OKANO, Tetsutaro Kobayashi | 2023-09-19 |
| 11677543 | Key exchange method and key exchange system | Tetsutaro Kobayashi, Yuto KAWAHARA, Hitoshi Fuji, Kazuki Yoneyama | 2023-06-13 |
| 11516195 | Terminal device, key distribution management device, server-client system, communication method, and programs | Yuto KAWAHARA, Hitoshi Fuji, Tetsutaro Kobayashi, Tomohide Yamamoto | 2022-11-29 |
| 11483145 | Key exchange device, key exchange system, key exchange method, and key exchange program for exchanging a key with another device | Masahiro Matsui, Yuki OKANO, Tetsutaro Kobayashi | 2022-10-25 |
| 11451518 | Communication device, server device, concealed communication system, methods for the same, and program | Tetsutaro Kobayashi, Yuto KAWAHARA, Hitoshi Fuji, Kazuki Yoneyama | 2022-09-20 |
| 11411720 | Key distribution system, terminal device, key distribution method, and program | Yuki OKANO, Tetsutaro Kobayashi | 2022-08-09 |
| 11388001 | Encrypted communication device, encrypted communication system, encrypted communication method, and program | Tetsutaro Kobayashi, Yuto KAWAHARA, Tomohide Yamamoto, Hironobu Okuyama | 2022-07-12 |
| 11336436 | Key distribution system and method, key generation apparatus, representative user terminal, server apparatus, user terminal, and program | Tetsutaro Kobayashi, Yuto KAWAHARA, Hitoshi Fuji, Kazuki Yoneyama | 2022-05-17 |
| 11336441 | Communication terminal, server apparatus, and program | Yuki OKANO, Ryo Nishimaki, Tetsutaro Kobayashi | 2022-05-17 |
| 11258588 | Key exchange method and key exchange system | Tetsutaro Kobayashi, Yuto KAWAHARA, Hitoshi Fuji, Kazuki Yoneyama | 2022-02-22 |
| 11223472 | Encrypted message search method, message transmission/reception system, server, terminal and program | Yuki OKANO, Ryo Nishimaki, Tetsutaro Kobayashi | 2022-01-11 |
| 11190499 | Communication terminals, server devices, and programs | Yuki OKANO, Ryo Nishimaki, Tetsutaro Kobayashi | 2021-11-30 |
| 11177949 | Data sharing method, data sharing system, data sharing server, communication terminal and program | Yuki OKANO, Yuto KAWAHARA, Tetsutaro Kobayashi | 2021-11-16 |
| 10941684 | Cylinder head cover | Kentaro Nagai, Takahiro Yamazaki, Tomoya Akitomo, Shoichi Okimi | 2021-03-09 |
| 10673629 | Data transmission and reception method and system | Hitoshi Fuji, Tetsutaro Kobayashi, Tomohide Yamamoto, Yuto KAWAHARA | 2020-06-02 |
| 10630465 | Key exchange method, key exchange system, communication device and storage medium therefore | Tetsutaro Kobayashi, Hitoshi Fuji, Tomohide Yamamoto, Yuto KAWAHARA, Kazuki Yoneyama | 2020-04-21 |
| 10546140 | Leakage prevention apparatus, leakage prevention method and program | Hitoshi Fuji, Tetsutaro Kobayashi, Junya Akiba, Tomoaki WASHIO, Tsuyoshi Miyamoto | 2020-01-28 |
| 10355856 | Key exchange method, key exchange system, key distribution device, communication device, and program | Hitoshi Fuji, Tetsutaro Kobayashi, Tomohide Yamamoto, Yuto KAWAHARA, Kazuki Yoneyama | 2019-07-16 |
| 10275960 | Security system, management apparatus, permission apparatus, terminal apparatus, security method and program | Hitoshi Fuji, Tomohide Yamamoto, Tetsutaro Kobayashi | 2019-04-30 |
| 10163370 | Decoding apparatus, decoding capability providing apparatus, method thereof and program | Go Yamamoto, Tetsutaro Kobayashi | 2018-12-25 |
| 9894056 | Segmented secret-key storage system, segment storage apparatus, segmented secret-key storage method | Tetsutaro Kobayashi, Go Yamamoto | 2018-02-13 |
| 9735963 | Decryption service providing device, processing device, safety evaluation device, program, and recording medium | Tetsutaro Kobayashi, Go Yamamoto, Hitoshi Fuji, Tomohide Yamamoto | 2017-08-15 |