Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9967688 | Audio processing device | Kuniaki YAMAMOTO | 2018-05-08 |
| 8092701 | Grating, negative and replica gratings of the grating, and method of manufacturing the same | Masaru Koeda, Makoto Sato, Akira Sato, Shinji Miyauchi | 2012-01-10 |
| 5363238 | Diffraction grating | Yasuhiro Akune, Kichiya Tanino, Masaru Koeda, Kazuo Sano, Eiji Ishiguro | 1994-11-08 |
| 5234537 | Dry etching method and its application | Masaru Koeda | 1993-08-10 |