Issued Patents All Time
Showing 26–37 of 37 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6239539 | Electric discharge lamp apparatus and insulating plug therefor having a particular front portion | Kunimasa Mochiduki, Masato Harazaki, Yasuyoshi Numajiri, Takeshi Fukuyo, Yoshitaka Ohshima | 2001-05-29 |
| 5993279 | Discharge lamp arc tube and method of producing the same | Takeshi Fukuyo, 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 | Takeshi Fukuyo, Nobuo Ohkawai, Yoshitaka Ohshima | 1999-10-05 |
| 5877591 | Arc tube for discharge lamp device | Akihiro Nagata | 1999-03-02 |
| 5877590 | Discharge lamp arc tube and method of producing the same | Takeshi Fukuyo, Nobuo Ohkawai | 1999-03-02 |
| 5601465 | Method for manufacturing arc tube for discharge bulb | Takeshi Fukuyo, Akihiro Nagata | 1997-02-11 |
| 5505648 | Contamination-free method of making arc tubes | Masakazu Nagasawa, Kunio Fukai | 1996-04-09 |
| 5402037 | Arc tube having particular volume and gas pressure for luminous flux | Yasuyoshi Numajiri, Kunimasa Mochiduki | 1995-03-28 |
| 5286227 | Arc tube and method for manufacturing the same | Yasuyoshi Numajiri, Kunio Fukai, Masakazu Nagasawa | 1994-02-15 |
| 5220235 | Discharge lamp device | Yukio Wakimizu, Yasuyoshi Numajiri, Masakazu Nagasawa, Yonemasa Yoshida | 1993-06-15 |
| 5177397 | Discharge lamp assembly with insulating tubular member and metal band around pinch seal | Masakazu Nagasawa, Nobuo Ohkawai, Goichi Oda, Masaya Shidoh, Yukio Wakimizu | 1993-01-05 |
| 5059855 | Discharge lamp base construction | Yukio Wakimizu, Masakazu Nagasawa | 1991-10-22 |