Issued Patents All Time
Showing 1–25 of 251 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12096182 | Capacitive-type electro-acoustic transducer | Koichi IRII | 2024-09-17 |
| 11589161 | Electrostatic electroacoustic transducer device, signal processing circuit for electrostatic electroacoustic transducer, signal processing method, and signal processing | Koichi IRII | 2023-02-21 |
| 11203039 | Acoustic-electric transducer | Koichi IRII, Mika Yoshino, Kosumo Miyauchi | 2021-12-21 |
| 11076222 | Electro-acoustic transducer and electro-acoustic conversion device | Koichi IRII | 2021-07-27 |
| 10362407 | Condenser microphone unit and condenser microphone | — | 2019-07-23 |
| 10149030 | Microphone | — | 2018-12-04 |
| 10123130 | Diaphragm, electroacoustic transducer, and electroacoustic transducer apparatus | — | 2018-11-06 |
| 10075781 | Microphone | — | 2018-09-11 |
| 10021471 | Acoustic tube and narrow directional microphone using the same | — | 2018-07-10 |
| 10021490 | Microphone | — | 2018-07-10 |
| 10021481 | Microphone joint | — | 2018-07-10 |
| 10015587 | Dynamic microphone | — | 2018-07-03 |
| 9992578 | Unidirectional dynamic microphone unit | Tatsuya Ikeda | 2018-06-05 |
| 9980039 | Unidirectional microphone | — | 2018-05-22 |
| 9967678 | Unidirectional condenser microphone unit, unidirectional condenser microphone, and method of manufacturing unidirectional condenser microphone unit | — | 2018-05-08 |
| 9949019 | Microphone | — | 2018-04-17 |
| 9942653 | Narrow-angle directional microphone | — | 2018-04-10 |
| 9936288 | Narrow-angle directional microphone and method of manufacturing the same | — | 2018-04-03 |
| 9893691 | Impedance converter and condenser microphone | — | 2018-02-13 |
| 9877113 | Condenser microphone unit and condenser microphone | — | 2018-01-23 |
| 9872096 | Boundary microphone | — | 2018-01-16 |
| 9838801 | Unidirectional condenser microphone | — | 2017-12-05 |
| 9838768 | Microphone device | Noriko Matsui | 2017-12-05 |
| 9832556 | Microphone device and microphone stand | — | 2017-11-28 |
| 9826304 | Stereo microphone | — | 2017-11-21 |