Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12204140 | Gain flattening filter, and method for manufacturing gain flattening filter | Takemi Hasegawa, Jun Kinugasa, Kazuaki Masui | 2025-01-21 |
| 11448821 | Slant-type fiber grating | Manabu Shiozaki, Jun Kinugasa, Takemi Hasegawa | 2022-09-20 |
| 11316316 | Optical amplifier and multi-core optical fiber | Takemi Hasegawa, Tetsuya Hayashi, Yoshiaki Tamura, Hirotaka Sakuma | 2022-04-26 |
| 11126064 | Optical wavelength conversion device | — | 2021-09-21 |
| 10962709 | Optical fiber and optical fiber grating | Masakazu Shigehara, Masayuki Yamazaki | 2021-03-30 |
| 10908353 | Optical fiber and slanted fiber grating | Manabu Shiozaki, Jun Kinugasa, Takemi Hasegawa | 2021-02-02 |
| 10830948 | Optical device and method for manufacturing optical device | — | 2020-11-10 |
| 10698292 | Optical wavelength conversion device and method for manufacturing the same | — | 2020-06-30 |
| 10663656 | Optical device including poled crystal region and amorphous region | — | 2020-05-26 |
| 10605982 | Multicore optical fiber with a core and a common cladding having a higher refractive index than the core, fiber Bragg grating, and method for manufacturing fiber Bragg grating | — | 2020-03-31 |
| 9395550 | Laser light source | — | 2016-07-19 |
| 9225138 | Laser light source | Motoki Kakui, Hiroshi Kohda, Shinobu Tamaoki, Yasuomi Kaneuchi | 2015-12-29 |
| 8933367 | Laser processing method | Motoki Kakui, Hiroshi Kohda, Yasuomi Kaneuchi, Shinobu Tamaoki, Yoshiyuki Uno +2 more | 2015-01-13 |
| 8854737 | Collimator device and laser light source | Motoki Kakui | 2014-10-07 |
| 8173982 | Non-degenerate polarization-entangled photon pair generation device and non-degenerate polarization-entangled photon pair generation method | Keiichi Edamatsu, Ryosuke Shimizu | 2012-05-08 |