Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5789850 | DC glow discharge lamp, and ignition apparatus, flood-light apparatus and projector apparatus for dc glow discharge lamp | Yasuhiro Iwafuji, Hiromichi Kawashima, Ichiro Tanaka, Nanao Murase | 1998-08-04 |
| D339647 | High intensity spotlight | Hiromichi Kawashima, Kazuo Honda | 1993-09-21 |
| 5136208 | Metal halide lamp maintaining a high lumen maintenance factor over an extended operation period | Hiromichi Kawashima, Kazuo Honda, Youichiro Mitsuyuki, Yasuki Mori, Masakazu Shibuya | 1992-08-04 |