Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12078805 | Head-mounted display | — | 2024-09-03 |
| 12038583 | Head-mounted display | — | 2024-07-16 |
| 11808717 | X-ray tube billing system | Yuji Maeda, Taketo Kishi | 2023-11-07 |
| 10768429 | Image display device | — | 2020-09-08 |
| 10760993 | Measurement method, measurement device, and non-transitory recording medium | Ryo Maruyama, Nobuo Kuwaki | 2020-09-01 |
| 8928868 | Optical fiber line characteristic analysis apparatus and analysis method thereof | Hiroshi Takahashi, Xinyu Fan, Yusuke KOSHIKIYA | 2015-01-06 |
| 8401808 | Wavelength-multiplexed optical signal measurement device and the method thereof | Keiji Okamoto | 2013-03-19 |
| 8149419 | Optical reflectometry and optical reflectometer | Xinyu Fan, Yusuke KOSHIKIYA | 2012-04-03 |
| 7719665 | Method, apparatus, and program for measuring wavelength dispersion of optical waveguide | Keiji Okamoto | 2010-05-18 |
| 7239596 | Optical pickup device and optical recording medium driving apparatus | Ryo Saitoh, Yoshinari Yokochi, Makoto Itonaga | 2007-07-03 |
| 7064840 | Optical sampling system for simultaneously monitoring intensity modulation and frequency modulation | — | 2006-06-20 |
| 5594783 | Telephone apparatus for recording a predetermined message in place of a CNG tone | — | 1997-01-14 |
| 5390042 | High sensitivity optical receiver suitable for single optical signal with high speed modulation | Kenichi Kitayama | 1995-02-14 |
| 5319290 | Motor control circuit and motor drive system using the same | Motoyasu Yoshino | 1994-06-07 |
| 5300873 | Motor control apparatus | Kenji Otani | 1994-04-05 |
| 5264774 | Motor control circuit and motor drive system using the same | — | 1993-11-23 |