Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11740426 | Optical element, optical system and optical device | Jin UEMURA, Gousuke Yoshida, Kosuke Takayama | 2023-08-29 |
| 11598972 | Diffractive optical element, projection device and measuring device | Ryota Murakami | 2023-03-07 |
| 11489990 | Optical element, optical system, and imaging apparatus | Masatoshi Oyama | 2022-11-01 |
| 10921501 | Infrared-light transmission filter and devices containing the infrared-light transmission filter | — | 2021-02-16 |
| 9939561 | Projector having diffuser | Shuichi Yamashita | 2018-04-10 |
| 9921371 | Light guide element and image display device | Yukihiro Tao, Kosuke Takayama | 2018-03-20 |
| 9897438 | Diffraction optical element, projection device, and measurement device | — | 2018-02-20 |
| 9829782 | Screen for image light projection and display system | Atsushi Koyanagi, Takuji Nomura | 2017-11-28 |
| 9477018 | Diffractive optical element and measurement device | Takuji Nomura | 2016-10-25 |
| 9052512 | Diffractive optical element and measuring apparatus | — | 2015-06-09 |
| 8995057 | Diffractive optical element and measurement instrument | Takuji Nomura | 2015-03-31 |
| 8599484 | Diffractive optical element and measuring device | Takuji Nomura | 2013-12-03 |
| 8451704 | Reflection type wavelength plate and optical head device | Takuji Nomura, Mamoru ISOBE | 2013-05-28 |
| 8437238 | Diffraction grating, aberration correction element and optical head device | Hiromasa Sato | 2013-05-07 |
| 8295143 | Aberration correcting device, optical device, and optical head device | Takuji Nomura, Koichi Murata | 2012-10-23 |
| 8279737 | Diffraction grating, aberration correction element and optical head device | Hiromasa Sato | 2012-10-02 |
| 8040781 | Wavelength selecting wavelength plate and optical head device using it | Yukihiro Tao, Hiromasa Sato, Atsushi Koyanagi | 2011-10-18 |
| 7755834 | Wavelength-selective diffraction element and optical head device incorporating the same | Atsushi Koyanagi, Hiromasa Sato, Yukihiro Tao | 2010-07-13 |
| 6882305 | Method and apparatus for determining position | Masakazu Mori, Yuji Kobayashi, Kazuyuki Sakaki, Kenichi Takasu | 2005-04-19 |
| 6865484 | Satellite position measurement system | Masakazu Mori, Kazuyuki Sakaki, Kenichi Takasu, Yuji Kobayashi | 2005-03-08 |
| 6791492 | GPS positioning system | Masakazu Mori, Yuji Kobayashi, Kazuyuki Sakaki, Kenichi Takasu | 2004-09-14 |