Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6470712 | Method of changing the surface of a glass substrate containing silver, by using a laser beam | Tadashi Koyama, Masahiro Oikawa, Kenjiro Hamanaka | 2002-10-29 |
| 6397161 | Method for stabilizing output of rain sensor and protection method therefor | Shuhei Tanaka, Tadashi Koyama | 2002-05-28 |