Issued Patents All Time
Showing 1–25 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10897674 | Electroacoustic transducer | Shigeo Ishii, Hiroshi Hamada, Takashi Tomita | 2021-01-19 |
| 10446737 | Piezoelectric element and method of manufacturing the same | Keiichi Hatano, Sumiaki Kishimoto, Tomohiro Harada | 2019-10-15 |
| 10433073 | Electroacoustic transducer | Shigeo Ishii, Hiroshi Hamada, Takashi Tomita | 2019-10-01 |
| 10418542 | Piezoelectric ceramic speaker using vibration sheet formed with piezoelectric ceramic | Gouki Watanabe, Takayuki Goto, Keiichi Hatano, Sumiaki Kishimoto | 2019-09-17 |
| 10412502 | Electroacoustic transducer with dual vibration plate | Shigeo Ishii, Takashi Tomita, Hiroshi Hamada | 2019-09-10 |
| 10250995 | Piezoelectric speaker and electroacoustic transducer | — | 2019-04-02 |
| 10121956 | Electroacoustic transducer | Takashi Tomita, Shigeo Ishii, Hiroshi Hamada | 2018-11-06 |
| 9973857 | Piezoelectric speaker and electroacoustic transducer | Yasukazu Tokuhisa, Takashi Tomita, Hiroshi Hamada, Shigeo Ishii, Yoshiyuki Watanabe | 2018-05-15 |
| 9838799 | Electroacoustic converter | Yukihiro Matsui, Hiroshi Hamada | 2017-12-05 |
| 9786833 | Piezoelectric ceramic, method of manufacturing same, and piezoelectric ceramic speaker using same | Gouki Watanabe, Takayuki Goto, Keiichi Hatano, Sumiaki Kishimoto | 2017-10-10 |
| 9755137 | Piezoelectric device with piezoelectric ceramic layer constituted by alkali-containing niobate type perovskite composition | Shinichiro Ikemi | 2017-09-05 |
| 9756427 | Electroacoustic converter and electronic device | Yukihiro Matsui, Hiroshi Hamada | 2017-09-05 |
| 9686615 | Electroacoustic converter and electronic device | Yukihiro Matsui, Hiroshi Hamada | 2017-06-20 |
| 9654881 | Electroacoustic transducer | Shigeo Ishii, Takashi Tomita, Fumihisa Ito, Yoshiyuki Watanabe | 2017-05-16 |
| 9637414 | Dielectric porcelain composition and dielectric element having the same | Hiroyuki Shimizu | 2017-05-02 |
| 9614142 | Piezoelectric ceramic composition constituted by Ag-segregated sintered body of zirconate-titanate type perovskite composition | Shinichiro Ikemi | 2017-04-04 |
| 9601682 | Electroacoustic transducer | Shigeo Ishii, Takashi Tomita, Fumihisa Ito, Yoshiyuki Watanabe | 2017-03-21 |
| 9537082 | Piezoelectric ceramic, piezoelectric ceramic component, and piezoelectric device using such piezoelectric ceramic component | Keiichi Hatano, Hiroyuki Shimizu | 2017-01-03 |
| 9450173 | Piezoelectric ceramic and piezoelectric element | Keiichi Hatano, Sumiaki Kishimoto | 2016-09-20 |
| 9406866 | Piezoelectric device with piezoelectric ceramic layer having AG segregated in voids in sintered body of perovskite composition | Shinichiro Ikemi | 2016-08-02 |
| 9281465 | Piezoelectric element and method of manufacturing the same | Hiroyuki Shimizu, Keiichi Hatano | 2016-03-08 |
| 9147828 | Piezoelectric drive element and piezoelectric drive unit | — | 2015-09-29 |
| 9117993 | Piezoelectric element and stacked piezoelectric structure | Hiroyuki Shimizu | 2015-08-25 |
| 8974687 | Piezoelectric ceramic and method of manufacturing the same | Hiroyuki Shimizu | 2015-03-10 |
| 8894873 | Piezoelectric porcelain composition | — | 2014-11-25 |