Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8038973 | High purity silicon production system and production method | Nobuaki Ito, Kensuke Okazawa, Shinji Tokumaru | 2011-10-18 |
| 7662356 | Method of refining Si | Shinji Tokumaru, Kensuke Okazawa, Jirou Kondou | 2010-02-16 |
| 7455822 | Method for production of silicon | Jiro Kondo, Shinji Tokumaru, Hitoshi Dohnomae | 2008-11-25 |
| 5739946 | Display device | Hiroki Iwanaga, Seizaburo Shimizu, Masayuki Saito, Atsushi Sugahara, Kazuyuki Sunohara +1 more | 1998-04-14 |
| 5406574 | Semiconductor laser device | John Rennie, Genichi Hatakoshi | 1995-04-11 |
| 5377291 | Wavelength converting optical device | Genichi Hatakoshi, Kazutaka Terashima, Yutaka Uematsu | 1994-12-27 |
| 5305341 | Semiconductor laser whose active layer has an ordered structure | Yukie Nishikawa, Koichi Nitta, Genichi Hatakoshi, Minoru Watanabe, Kazuhiko Itaya | 1994-04-19 |
| 5282218 | Semiconductor laser device | Koichi Nitta, Genichi Hatakoshi, Yukie Nishikawa, Kazuhiko Itaya | 1994-01-25 |
| 5202895 | Semiconductor device having an active layer made of InGaAlP material | Koichi Nitta, Masayuki Ishikawa, Yukie Nishikawa, Hideto Sugawara, Minoru Watanabe +1 more | 1993-04-13 |
| 5065404 | Transverse-mode oscillation semiconductor laser device | Genichi Hatakoshi, Masayuki Ishikawa, Yutaka Uematsu, Nawoto Motegi | 1991-11-12 |
| 5058120 | Visible light emitting semiconductor laser with inverse mesa-shaped groove section | Koichi Nitta, Yukio Watanabe, Yukie Nishikawa, Genichi Hatakoshi | 1991-10-15 |
| 4799228 | Transverse-mode stabilized semiconductor laser diode with slab-coupled waveguide | Hiroko Nagasaka, Gen-ichi Hatakoshi, Naohiro Shimada, Motoyuki Yamamoto, Yoshio Iizuka +3 more | 1989-01-17 |
| 4730925 | Method of spectroscopically determining the composition of molten iron | Koichi Chiba, Akihiro Ono, Takamasa Ohno, Hiroshi Yamane, Minoru Hayata | 1988-03-15 |
| 4706101 | Light emitting diode formed of a compound semiconductor material | Masaru Nakamura, Tadashi Komatsubara, Tetsuo Sadamasa, Koichi Nitta | 1987-11-10 |
| 4691321 | Semiconductor laser device having current confining and built-in waveguide structure | Nawoto Motegi, Yukio Watanabe, Naohiro Shimada | 1987-09-01 |
| 4647953 | Semiconductor laser device and method for manufacturing the same | Nawoto Motegi, Yuhei Muto | 1987-03-03 |
| 4635268 | Semiconductor laser device having a double heterojunction structure | Nawoto Motegi, Yuhei Muro | 1987-01-06 |