Issued Patents All Time
Showing 1–25 of 43 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12292314 | Optical encoder | Masaru Shiraishi | 2025-05-06 |
| 12203786 | Encoder | Masaru Shiraishi, Junya Aso | 2025-01-21 |
| 12078517 | Encoder including moving plate, irradiator, light receiver and determination part to specify error position | Masaru Shiraishi | 2024-09-03 |
| 11982550 | Encoder | Masaru Shiraishi, Junya Aso, Toshihiro Koga, Takuma Katayama | 2024-05-14 |
| 11982551 | Encoder using rotatable plate, light source and light receiver | — | 2024-05-14 |
| 10297538 | Signal transmission apparatus including semiconductor chips and signal isolator | Osamu Tabata, Songbaek CHOE | 2019-05-21 |
| 10158280 | Signal generation circuit | — | 2018-12-18 |
| 10153765 | Signal generation device | Osamu Tabata, Yasufumi Kawai | 2018-12-11 |
| 9972587 | Signal transmission device using electromagnetic resonance coupler | Songbaek CHOE | 2018-05-15 |
| 9735456 | Electromagnetic resonant coupler and high-frequency transmission device | Yasufumi Kawai, Daisuke Ueda | 2017-08-15 |
| 9698461 | Resonant coupler | — | 2017-07-04 |
| 9654098 | Signal reception circuit and isolated signal transmission device | — | 2017-05-16 |
| 9654097 | Signal transmission circuit, switching system, and matrix converter | — | 2017-05-16 |
| 9634655 | Drive device having first and second switching devices with different gate widths | Osamu Tabata | 2017-04-25 |
| 9515653 | Signal generating circuit | Miori Hiraiwa | 2016-12-06 |
| 9494964 | Gate drive circuit | Yasufumi Kawai | 2016-11-15 |
| 9490797 | Drive device | Osamu Tabata, Hideaki Fujiwara, Yasufumi Kawai | 2016-11-08 |
| 9479074 | Resonance coupler, transmission apparatus, switching system, and directional coupler | — | 2016-10-25 |
| 9466421 | Resonance coupler and transmission device | Yasufumi Kawai | 2016-10-11 |
| 9438130 | Semiconductor device, switching system, and matrix converter | Yasuhiro Yamada, Daisuke Ueda | 2016-09-06 |
| 9438230 | Gate drive circuit | Yasufumi Kawai, Daisuke Ueda | 2016-09-06 |
| 9438231 | Gate drive circuit | — | 2016-09-06 |
| 9406668 | Power semiconductor element | Daisuke Ueda, Tatsuo Morita, Tetsuzo Ueda | 2016-08-02 |
| 9391353 | Resonance coupler | — | 2016-07-12 |
| 9362963 | Radio-frequency signal reception circuit and isolated signal transmission apparatus | Yasufumi Kawai | 2016-06-07 |