Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6613170 | Optical information recording medium and its manufacturing method and apparatus | Eiji Ohno, Hidemi Isomura, Hideo Matsumoto, Kazuya Hisada, Kazuo Inoue | 2003-09-02 |
| 6590474 | Multilayer piezoelectric filter with an air vent between two resonator chambers | Tatsuo Iwata, Masayuki Watanabe | 2003-07-08 |