Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11929791 | Communication system | — | 2024-03-12 |
| 11880174 | Disturbance suppression apparatus, disturbance suppression method, and program | — | 2024-01-23 |
| 11817907 | Optical transmission device and optical transmission method | — | 2023-11-14 |
| 11702504 | Resin composition for printed wiring board, prepreg, laminate, metal foil-clad laminate, printed wiring board, and multilayer printed wiring board | Katsuya Tomizawa, Norihiro Shida, Hidetoshi Kawai | 2023-07-18 |
| 11646519 | Electric connector for flat conductor | — | 2023-05-09 |
| 11488792 | Grounding circuit, electrical apparatus, grounding control method, and grounding control program | — | 2022-11-01 |
| 10815349 | Resin composition, prepreg, resin sheet, metal foil-clad laminate, and printed circuit board | Katsuya Tomizawa, Tomoki Hamajima, Eisuke Shiga, Meguru Ito | 2020-10-27 |
| 10673155 | Electrical connector for flat conductor | — | 2020-06-02 |
| 10666044 | Grounding circuit, electrical device, grounding control method, and grounding control program | — | 2020-05-26 |
| 10355744 | Feed line branching apparatus and feed line branching method | — | 2019-07-16 |
| 10288826 | Node apparatus and node apparatus control method | — | 2019-05-14 |
| 10128589 | Electrical connector for flat conductor | — | 2018-11-13 |
| 7151630 | Raman amplification repeater | — | 2006-12-19 |
| 6956693 | Optical repeater having independently controllable amplification factors | — | 2005-10-18 |
| 6847743 | Polarization scrambler unit and multi-repeater transmission system incorporating the same | — | 2005-01-25 |
| 6628870 | Block gain equalizer | — | 2003-09-30 |
| 6549314 | Optical control apparatus, optical junction apparatus, optical ADM apparatus and optical transmission apparatus having thereof | — | 2003-04-15 |
| 6323983 | Optical switch | — | 2001-11-27 |
| 6169625 | Saturable absorption type optical switch and controlling method therefor | Seiji Watanabe | 2001-01-02 |
| 6163084 | Cable branching unit | — | 2000-12-19 |
| 6078413 | Optical branching/multiplexing apparatus | — | 2000-06-20 |
| 6038046 | Branching system with optical add drop multiplexing function | Tomoyuki Kaneko | 2000-03-14 |
| 5861975 | Wavelength stability circuit | Hiroshi Sakuyama | 1999-01-19 |