Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6433349 | Charged-particle beam irradiation method and system | Kazuo Hiramoto, Koji Matsuda | 2002-08-13 |
| 6346157 | Manufacturing method of suspension spring for car | Yoshiyuki Takezawa, Kazuo Ichiki, Naoki Tadakuma, Takahiro Tanae | 2002-02-12 |
| 6343058 | Optical pickup device applicable to two kinds of recording media with minimized deterioration of a beam spot | Yoshitaka Takahashi | 2002-01-29 |