Issued Patents All Time
Showing 25 most recent of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12066042 | Hydraulic system | — | 2024-08-20 |
| 11057706 | Speaker driving device | Akira Yasuda, Hiroshi Iwamura | 2021-07-06 |
| 10907323 | Hydraulic drive device for working machine | Yoshifumi Takimoto, Kazuo Takiguchi, Chinori Iio, Hiromasa Takahashi | 2021-02-02 |
| 10687141 | Speaker driving device | Akira Yasuda, Hiroshi Iwamura | 2020-06-16 |
| 10443746 | Pressure reducing valve unit | Takeshi Kobayashi, Mitsuhiro Yoshimoto, Kazuo Takiguchi, Masakazu Andou, Yoshifumi Takimoto | 2019-10-15 |
| 9973850 | Speaker control device and speaker control method | Akira Yasuda | 2018-05-15 |
| 9793868 | Digital acoustic system | Akira Yasuda | 2017-10-17 |
| 9735796 | Selection device | Akira Yasuda | 2017-08-15 |
| 9693136 | Digital speaker driving apparatus | Akira Yasuda | 2017-06-27 |
| 9641931 | Drive circuit | Akira Yasuda | 2017-05-02 |
| 9628928 | Speaker control device | Akira Yasuda | 2017-04-18 |
| 9544691 | Acoustic playback system | Akira Yasuda | 2017-01-10 |
| 9362943 | Converter | Akira Yasuda | 2016-06-07 |
| 9300310 | Selection device | Akira Yasuda | 2016-03-29 |
| 9287809 | Inverter for a driving a motor | Akira Yasuda | 2016-03-15 |
| 9226053 | Digital speaker driving apparatus | Akira Yasuda | 2015-12-29 |
| 9219960 | Acoustic playback system | Akira Yasuda | 2015-12-22 |
| 8933833 | Conversion device | Akira Yasuda | 2015-01-13 |
| 8306244 | Digital speaker driving apparatus | Akira Yasuda | 2012-11-06 |
| 7535957 | Transmitter circuit, receiver circuit, clock data recovery phase locked loop circuit, data transfer method and data transfer system | Seiichi Ozawa, Yohei Ishizone, Satoshi Miura | 2009-05-19 |
| 7339421 | Differential circuit and receiver with same | — | 2008-03-04 |
| 7095895 | Semiconductor integrated circuit for realizing coding circuit | Tatsuo Tsujita | 2006-08-22 |
| 6452824 | Semiconductor memory device | — | 2002-09-17 |
| 6249451 | Data line connections with twisting scheme technical field | — | 2001-06-19 |
| 6084816 | Semiconductor memory device | — | 2000-07-04 |