Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6424048 | Semiconductor chip, semiconductor device, circuit board and electronic equipment and production methods for them | Kazushige Umetsu, Shinichi Yotsuya, Katsuji Arakawa | 2002-07-23 |
| 6376799 | Laser machining apparatus with a rotatable phase grating | Masami Murai, Tsutomu Ota, Tomio Sonehara | 2002-04-23 |