Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10054738 | Optical waveguide and arrayed waveguide grating | Keiichi Morita, Kouji Kawashima, Tomoharu Niitsu | 2018-08-21 |
| 9618694 | Optical waveguide and arrayed waveguide grating | Keiichi Morita, Kouji Kawashima, Tomoharu Niitsu | 2017-04-11 |
| 9075191 | Optical waveguide and arrayed waveguide grating | Keiichi Morita, Koji Kawashima | 2015-07-07 |
| 9020310 | Optical waveguide and arrayed waveguide grating | Keiichi Morita, Kenya Suzuki, Koji Kawashima | 2015-04-28 |