Issued Patents All Time
Showing 26–32 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5457573 | Diffraction element and an optical multiplexing/demultiplexing device incorporating the same | Hiroyuki Asakura | 1995-10-10 |
| 5448398 | Diffraction grating unit and second-harmonic generator employing the same | Hiroyuki Asakura | 1995-09-05 |
| 5420416 | Light wavelength selection device and method using diffraction grating with peak detection | Hiroyuki Asakura, Tetuji Miwa | 1995-05-30 |
| 5377286 | Optical fiber array and method of making the same | Hiroyuki Asakura, Tetsuji Miwa | 1994-12-27 |
| 5321785 | Optical fiber array and method of making the same | Hiroyuki Asakura, Tetsuji Miwa | 1994-06-14 |
| 5311606 | Optical filter and optical amplifier employing said optical filters | Hiroyuki Asakura, Tetsuji Miwa | 1994-05-10 |
| 5007709 | Diffraction grating and manufacturing method thereof | Kiyokazu Hagiwara, Hiroyuki Asakura, Minoru Nishioka, Koichi Murase | 1991-04-16 |