Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11451211 | Gallium nitride structure, piezoelectric element, method of manufacturing piezoelectric element, and resonator using piezoelectric element | Keiichi Umeda, Takaaki Mizuno, Yasuhiro Aida, Masato Uehara, Morito Akiyama | 2022-09-20 |
| 10608164 | Piezoelectric thin film, manufacturing method therefor, and piezoelectric element | Keiichi Umeda, Atsushi Honda, Morito Akiyama, Keiko Nishikubo | 2020-03-31 |
| 10475984 | Aluminum nitride piezoelectric thin film, piezoelectric material, piezoelectric component, and method for manufacturing aluminum nitride piezoelectric thin film | Keiichi Umeda, Morito Akiyama, Keiko Nishikubo, Atsushi Honda | 2019-11-12 |
| 9972769 | Piezoelectric thin film and method for manufacturing the same, and piezoelectric element | Keiichi Umeda, Atsushi Honda, Morito Akiyama, Keiko Nishikubo, Masato Uehara | 2018-05-15 |
| 5140811 | Exhaust gas purification device in variable combination of absorbent and catalyst according to gas temperature | Takashi Minami | 1992-08-25 |