Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE38465 | Exposure apparatus | Mikihiko Ishii, Issey Tanaka | 2004-03-16 |
| 6704415 | Echo canceler | Hiroshi Katayama, Yasushi Yamazaki, Yoshihiro Tomita, Mutsumi Saito, Hisanari Kimura | 2004-03-09 |