Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6890870 | Method for controlling electrical conductivity | Takeshi Karasawa | 2005-05-10 |
| 6593694 | Discharge lamp with lower high temperature viscosity outer portion and method for making same | — | 2003-07-15 |
| 6495959 | Cermet for lamp and ceramic discharge lamp | Yukiharu Tagawa, Masaki Yoshioka | 2002-12-17 |