Issued Patents All Time
Showing 1–15 of 15 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 | Hisashi Minemoto, Nobuki Itoh, Satoshi Ishizuka | 2003-04-01 |
| 6404190 | Optical magnetic field sensor probe | Nobuki Itoh, Yukiko Yoshikawa, Satoshi Ishizuka, Hisashi Minemoto | 2002-06-11 |
| 6370288 | Optical magnetic field sensor probe | Nobuki Itoh, Yukiko Yoshikawa, Satoshi Ishizuka, Hisashi Minemoto | 2002-04-09 |
| 6333809 | Magneto-optical element | Nobuki Itoh, Yukiko Yoshikawa, Satoshi Ishizuka, Hisashi Minemoto | 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 | Hisashi Minemoto, Nobuki Itoh, Satoshi Ishizuka | 2001-04-10 |
| 6160396 | Optical magnetic field sensor probe | Nobuki Itoh, Yukiko Yoshikawa, Satoshi Ishizuka, Hisashi Minemoto | 2000-12-12 |
| 6057678 | Optical sensor apparatus and signal processing circuit used therein including initialization and measuring modes | Satoshi Tagiri | 2000-05-02 |
| 6037770 | Optical magnetic field sensor probe having drum lenses | Nobuki Itoh, Yukiko Yoshikawa, Satoshi Ishizuka, Hisashi Minemoto | 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 | Hisashi Minemoto, Nobuki Itoh, Satoshi Ishizuka | 1999-12-28 |
| 5835257 | Magneto-optical element and optical magnetic field sensor using the same | Nobuki Itoh, Hisashi Minemoto, Satoshi Ishizuka | 1998-11-10 |
| 5732167 | Optical fiber sensor for measuring a magnetic field or electric current and method for making the same | Hisashi Minemoto, Nobuki Itoh | 1998-03-24 |
| 5699461 | Optical fiber sensors and method for making the same | Hisashi Minemoto, Yukiko Yoshikawa, Nobuki Itoh, Satoshi Ishizuka | 1997-12-16 |
| 5691837 | Magneto-optical element and optical magnetic field sensor using the same | Nobuki Itoh, Hisashi Minemoto, Satoshi Ishizuka | 1997-11-25 |
| 5075546 | Magnetic field measurement apparatus | Osamu Kamada, Hisashi Minemoto, Kazurou Toda, Satoshi Ishizuka, Akihiro Miura | 1991-12-24 |
| 4999571 | Current and/or voltage detector for a distribution system | Kazurou Toda, Osamu Kamada, Akihiro Miura | 1991-03-12 |