Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7388332 | Metal vapor discharge lamp, floodlight projector and metal vapor discharge lamp lighting device | Toshihiko Ishigami, Kozo Uemura, Mikio Matsuda, Hiroyoshi Takanishi, Hideo Inoue | 2008-06-17 |
| 7352132 | Metal halide lamp and metal halide lamp lighting device with improved emission power maintenance ratio | Toshihiko Ishigami, Mikio Matsuda | 2008-04-01 |
| 7242144 | High-pressure discharge lamp, high-pressure discharge lamp lighting device and automotive headlamp apparatus | Hiroyuki Kato, Hiromichi Kawashima, Kozo Uemura, Toshihiko Ishigami, Mikio Matsuda | 2007-07-10 |
| 7057349 | Lightening device for metal halide discharge lamp | Toshihiko Ishigami, Kiyoshi Saita, Mikio Matsuda | 2006-06-06 |
| 6879101 | Metal halide lamp with electrodes having a curved surface part and automotive headlamp apparatus | Makoto Deguchi, Hiromichi Kawashima, Kozo Uemura, Sakae Katayama, Yoshiyuki Watanuki +3 more | 2005-04-12 |
| 6873109 | Metal halide discharge lamp, lighting device for metal halide discharge lamp, and illuminating apparatus using metal halide discharge lamp | Toshihiko Ishigami, Kiyoshi Saita, Mikio Matsuda | 2005-03-29 |
| 6528946 | Compact-type metal halide discharge lamp | Toshihiko Ishigami, Kiyoshi Saita, Mikio Matsuda | 2003-03-04 |
| 6495962 | Metal halide lamp and a vehicle lighting apparatus using the lamp | Kozo Uemura, Toshihiko Ishigami, Mikio Matsuda, Shigehisa Kawatsuru, Isao Yamazaki +1 more | 2002-12-17 |
| 6353289 | Metal halide discharge lamp, lighting device for metal halide discharge lamp, and illuminating apparatus using metal halide discharge lamp | Toshihiko Ishigami, Kiyoshi Saita, Mikio Matsuda | 2002-03-05 |
| 5331608 | Electronic watch with an antenna for a receiving device | Toshio Umemoto, Kunikazu Mochida | 1994-07-19 |
| 4783772 | Wristwatch with pressure sensor | Toshio Umemoto, Hideo Uehara, Masato Yamada, Kunikazu Mochida | 1988-11-08 |
| 4291400 | Electronic timepiece | Katsuhiko Komiyama | 1981-09-22 |
| 4261049 | Wristwatch with solar cells | Katsuhiko Komiyama | 1981-04-07 |