Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6764229 | Method and apparatus for optical fiber splicing | Yoshihara Kuwabara, Kouji Yamamoto, Jun Mizuno | 2004-07-20 |
| 6449300 | Surface-emitting laser | Nobuhiko Nishiyama, Fumio Koyama | 2002-09-10 |
| 5932890 | Field effect transistor loaded with multiquantum barrier | Michinori Irikawa | 1999-08-03 |
| 5789760 | Multiquantum barrier Schottky junction device | Michinori Irikawa | 1998-08-04 |
| 5764828 | Optical apparatus for controlling angle of divergence of ring beam | Shinichi Katsura, Yuzo Kawaguchi | 1998-06-09 |
| 5383213 | Semiconductor device with current confinement structure | Michinori Irikawa, Masayuki Iwase | 1995-01-17 |
| 5362974 | Group II-VI material semiconductor optical device with strained multiquantum barriers | Michinori Irikawa | 1994-11-08 |
| 5289486 | Semiconductor luminous element and superlattice structure | Fumio Koyama, Takeshi Takagi | 1994-02-22 |
| 5241554 | Laser diode of variable beam divergence and information processor using the same | Kazuto Senda | 1993-08-31 |
| 5236864 | Method of manufacturing a surface-emitting type semiconductor laser device | Akira Ibaraki, Kenji Kawashima, Kotaro Furusawa, Toru Ishikawa | 1993-08-17 |
| 5091756 | Superlattice structure | Fumio Koyama, Hiroyuki Uenohara | 1992-02-25 |
| 5020066 | Surface-emitting-type semiconductor laser device | Akira Ibaraki, Kenji Kawashima, Kotaro Furusawa, Toru Ishikawa | 1991-05-28 |
| 4340966 | Semiconductor laser with buffer layer | Shigeyuki Akiba, Yasuharu Suematsu, Shigehisa Arai, Masanobu Kodaira, Yoshio Itaya +3 more | 1982-07-20 |