Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12204291 | Time transmission correction device, time transmission system, and delay measurement method | Hiroki Sakuma, Masahiro Nakagawa, Shunichi Tsuboi | 2025-01-21 |
| 11927923 | Time synchronization system, management device, time synchronization method, and program | Takaaki Hisashima, Hiroki Sakuma, Ryuta Sugiyama, Shunichi Tsuboi, Osamu Kurokawa +1 more | 2024-03-12 |
| 11881900 | Transceiver, spatial light frequency transmission system and spatial light frequency transmission method | Hiroki Sakuma, Ryuta Sugiyama | 2024-01-23 |
| 11855760 | Transmission device, time transmission system, and delay compensation method | Masahiro Nakagawa, Hiroki Sakuma, Shunichi Tsuboi | 2023-12-26 |
| 11815552 | Clock frequency monitoring device and clock frequency monitoring method | Takaaki Hisashima, Hiroki Sakuma, Ryuta Sugiyama, Shunichi Tsuboi, Osamu Kurokawa +1 more | 2023-11-14 |
| 11791922 | Transmission device, time transmission system, and delay compensation method | Masahiro Nakagawa, Hiroki Sakuma, Shunichi Tsuboi | 2023-10-17 |
| 11750358 | Time transmission device and transmission method | Masahiro Nakagawa, Hiroki Sakuma, Shunichi Tsuboi | 2023-09-05 |
| 11722288 | Time synchronization path selection device and time synchronization path selection method | Hiroki Sakuma, Masahiro Nakagawa, Shunichi Tsuboi | 2023-08-08 |
| 11695473 | Time comparison system, time comparison device, and time comparison method | Hiroki Sakuma, Ryuta Sugiyama | 2023-07-04 |
| 11638228 | Time comparison device and time quality monitoring method | Hiroki Sakuma, Masahiro Nakagawa, Shunichi Tsuboi | 2023-04-25 |
| 11438857 | Transmission device, time transmission system, and delay measurement method | Hiroki Sakuma, Masahiro Nakagawa, Shunichi Tsuboi | 2022-09-06 |
| 11240141 | Time path selection device and time path selection method | Ryuta Sugiyama, Hiroki Sakuma, Takaaki Hisashima, Shunichi Tsuboi, Osamu Kurokawa +1 more | 2022-02-01 |
| 11196533 | Time synchronization system and time synchronization method | Hiroki Sakuma, Ryuta Sugiyama, Takaaki Hisashima, Shunichi Tsuboi, Osamu Kurokawa +1 more | 2021-12-07 |
| 11196535 | Time synchronization system and time synchronization method | Hiroki Sakuma, Takaaki Hisashima, Ryuta Sugiyama, Shunichi Tsuboi, Osamu Kurokawa +1 more | 2021-12-07 |
| 11196499 | Time synchronization device and time synchronization method | Hiroki Sakuma, Takaaki Hisashima, Ryuta Sugiyama, Shunichi Tsuboi, Osamu Kurokawa +1 more | 2021-12-07 |
| 10250348 | Optical transport system and resource optimization method | Yoshiaki Yamada, Kengo SHINTAKU, Takuya Ohara, Kei Kitamura, Takashi Kotanigawa +3 more | 2019-04-02 |
| 10230457 | Framer and framing method | Kei Kitamura, Takafumi HAMANO, Takashi Kotanigawa, Masahiro Yokota, Hideki Maeda +3 more | 2019-03-12 |
| 10181921 | Framer and framing method | Masahiro Yokota, Takafumi HAMANO, Takashi Kotanigawa, Kei Kitamura, Hideki Maeda +3 more | 2019-01-15 |
| 10063321 | Framer, optical transmission device, and framing method | Kei Kitamura, Takashi Kotanigawa, Takafumi HAMANO, Masahiro Yokota, Hideki Maeda +3 more | 2018-08-28 |
| 6776860 | Ceramic composite and manufacturing method thereof | Masahiro Kohketsu, Asako Matsushima, Masanori Nakasu | 2004-08-17 |
| 6450947 | Endoscopic terminal processor | — | 2002-09-17 |
| 6346075 | Air and water supply valve structure in endoscope | Hiroshi Kuboya, Mitsuo Kondo | 2002-02-12 |
| 5924791 | Light source device for endoscope which shields lamp noise | Shigeo Suzuki | 1999-07-20 |
| 5889370 | Structure for eliminating noise in light source device for electronic endoscope | Shigeo Suzuki | 1999-03-30 |
| 4904058 | Liquid crystal display panel | Shoichi Kato, Ikuo Tomita | 1990-02-27 |