Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7999475 | Short arc type discharge lamp | Hirohisa Ishikawa, Toyohiko Kumada | 2011-08-16 |
| 7898180 | High pressure discharge lamp | Toyohiko Kumada | 2011-03-01 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7999475 | Short arc type discharge lamp | Hirohisa Ishikawa, Toyohiko Kumada | 2011-08-16 |
| 7898180 | High pressure discharge lamp | Toyohiko Kumada | 2011-03-01 |