Issued Patents All Time
Showing 26–47 of 47 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6542647 | Optical signal transmission system and magneto-optical modulator designed to establish modulation over wide range for use in the same | Nobuki Itoh, Daisuke Ishiko, Satoshi Ishizuka | 2003-04-01 |
| 6404190 | Optical magnetic field sensor probe | Nobuki Itoh, Yukiko Yoshikawa, Satoshi Ishizuka, Daisuke Ishiko | 2002-06-11 |
| 6370288 | Optical magnetic field sensor probe | Nobuki Itoh, Yukiko Yoshikawa, Satoshi Ishizuka, Daisuke Ishiko | 2002-04-09 |
| 6333809 | Magneto-optical element | Nobuki Itoh, Yukiko Yoshikawa, Satoshi Ishizuka, Daisuke Ishiko | 2001-12-25 |
| 6215576 | Method for making a second-order nonlinear optical material, the material obtained by the method, and an optical modulation device comprising the material | Nobuki Itoh, Daisuke Ishiko, Satoshi Ishizuka | 2001-04-10 |
| 6160396 | Optical magnetic field sensor probe | Nobuki Itoh, Yukiko Yoshikawa, Satoshi Ishizuka, Daisuke Ishiko | 2000-12-12 |
| 6037770 | Optical magnetic field sensor probe having drum lenses | Nobuki Itoh, Yukiko Yoshikawa, Satoshi Ishizuka, Daisuke Ishiko | 2000-03-14 |
| 6008927 | Optical fiber modulator having an optical fiber having a poled portion serving as an electrooptic element and method for making same | Nobuki Itoh, Daisuke Ishiko, Satoshi Ishizuka | 1999-12-28 |
| 5835257 | Magneto-optical element and optical magnetic field sensor using the same | Nobuki Itoh, Daisuke Ishiko, Satoshi Ishizuka | 1998-11-10 |
| 5742157 | Optical fiber magnetic-field sensor | Satoshi Ishizuka, Nobuki Itoh | 1998-04-21 |
| 5732167 | Optical fiber sensor for measuring a magnetic field or electric current and method for making the same | Daisuke Ishiko, Nobuki Itoh | 1998-03-24 |
| 5699461 | Optical fiber sensors and method for making the same | Yukiko Yoshikawa, Nobuki Itoh, Daisuke Ishiko, Satoshi Ishizuka | 1997-12-16 |
| 5691837 | Magneto-optical element and optical magnetic field sensor using the same | Nobuki Itoh, Daisuke Ishiko, Satoshi Ishizuka | 1997-11-25 |
| 5569565 | Hologram recording material | Tetsuji Kawakami, Katsuya Wakita, Tatsurou Kawamura, Yusuke Ozaki, Nobuo Sonoda | 1996-10-29 |
| 5460754 | Non-linear optical material, method of manufacturing the same and optical wavelength converter | Yusuke Ozaki, Nobuo Sonoda, Tetsuji Kawakami, Tatsurou Kawamura, Katsuya Wakita | 1995-10-24 |
| 5436920 | Laser device | Yusuke Ozaki, Nobuo Sonoda | 1995-07-25 |
| 5381429 | Laser device with wavelength converter using organic ionic crystal | Yusuke Ozaki, Nobuo Sonoda | 1995-01-10 |
| 5347394 | Nonlinear optical materials, method of manufacturing the same, and optical wavelength converter | Katsuya Wakita, Tetsuji Kawakami, Nobuo Sonoda | 1994-09-13 |
| 5346653 | Non-linear optical material, method of manufacturing the same and optical wavelength converter | Yusuke Ozaki, Nobuo Sonoda, Tetsuji Kawakami, Tatsurou Kawamura, Katsuya Wakita | 1994-09-13 |
| 5167000 | Optical wavelength converter | Tatsurou Kawamura, Katsuya Wakita, Nobuo Sonoda | 1992-11-24 |
| 5154858 | Nonlinear optical compound | Katsuya Wakita, Nobuo Sonoda, Tetsuji Kawakami, Tatsurou Kawamura, Yusuke Ozaki | 1992-10-13 |
| 5075546 | Magnetic field measurement apparatus | Osamu Kamada, Kazurou Toda, Daisuke Ishiko, Satoshi Ishizuka, Akihiro Miura | 1991-12-24 |