Issued Patents All Time
Showing 26–31 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6274973 | Electric discharge lamp apparatus with insulating plug | Kunimasa Mochiduki, Masato Harazaki, Yasuyoshi Numajiri, Yoshitaka Ohshima, Shinichi Irisawa | 2001-08-14 |
| 6239539 | Electric discharge lamp apparatus and insulating plug therefor having a particular front portion | Kunimasa Mochiduki, Masato Harazaki, Yasuyoshi Numajiri, Yoshitaka Ohshima, Shinichi Irisawa | 2001-05-29 |
| 5993279 | Discharge lamp arc tube and method of producing the same | Shinichi Irisawa, Nobuo Ohkawai | 1999-11-30 |
| 5962976 | Molybdenum foils with yttrium oxide and recrystallization grains no more than 50 microns within the pinch seals of a metallic halide lamp | Shinichi Irisawa, Nobuo Ohkawai, Yoshitaka Ohshima | 1999-10-05 |
| 5877590 | Discharge lamp arc tube and method of producing the same | Shinichi Irisawa, Nobuo Ohkawai | 1999-03-02 |
| 5601465 | Method for manufacturing arc tube for discharge bulb | Shinichi Irisawa, Akihiro Nagata | 1997-02-11 |