Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6816300 | Optical apparatus | Tetsuya Iishi, Yohei Hanaki | 2004-11-09 |
| 6673146 | Method of manufacturing a magnet-free faraday rotator | Norio Takeda | 2004-01-06 |
| 6411641 | Faraday rotator for use with high energy lasers | Norio Takeda | 2002-06-25 |
| 6128423 | Reflection type magneto-optic sensor | — | 2000-10-03 |
| 6031654 | Low magnet-saturation bismuth-substituted rare-earth iron garnet single crystal film | Kiyonari Hiramatsu, Norio Takeda | 2000-02-29 |
| 5925474 | Bismuth-substituted rare earth iron garnet single crystal film | Norio Takeda | 1999-07-20 |
| 5920420 | Faraday rotator with antireflection film | Kenji Ishikura, Kiyonari Hiramatsu, Norio Takeda | 1999-07-06 |
| 5898516 | Faraday rotator having a rectangular shaped hysteresis | Norio Takeda, Kiyonari Hiramatsu | 1999-04-27 |
| 5683506 | Method of manufacturing a bismuth-substituted rare earth iron garnet single crystal film for short wavelength | Norio Takeda | 1997-11-04 |
| 5565131 | Bismuth-substituted rare earth iron garnet single crystal | Kenji Ishikura, Norio Takeda | 1996-10-15 |
| 5535046 | Faraday rotator | Norio Takeda | 1996-07-09 |
| 5512193 | Low saturated magnetic field bismuth-substituted rare earth iron garnet single crystal and its use | Kenji Ishikura, Norio Takeda | 1996-04-30 |
| 5493222 | Reflection type magnetooptic sensor head with faraday rotator | Toshihiro Shinbo, Norio Takeda, Mitsuzo Arii | 1996-02-20 |
| 5463316 | Magnetooptic sensor head | Toshihiro Shinbo, Norio Takeda, Mitsuzo Arii | 1995-10-31 |
| 5345329 | Polarization-independent optical isolator | Toshihiko Takano, Norio Takeda, Mitsuzo Arii | 1994-09-06 |
| 5278853 | Optical isolator | Makoto Sumitani, Norio Takeda, Mitsuzo Arii | 1994-01-11 |
| 4932760 | Magneto-optic garnet | Mitsuzo Arii, Norio Takeda, Yasunori Tagami | 1990-06-12 |