Issued Patents All Time
Showing 101–125 of 134 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6501868 | Optical waveguide device, coherent light source, integrated unit, and optical pickup | Yasuo Kitaoka, Kenichi Kasazumi, Kazuhisa Yamamoto | 2002-12-31 |
| 6496299 | Method for stabilizing output of higher harmonic waves and short wavelength laser beam source using the same | Kazuhisa Yamamoto, Yasuo Kitaoka, Makoto Kato | 2002-12-17 |
| 6441970 | Optical waveguide device, and light source device and optical apparatus including the optical waveguide device | Ken'ichi Kasazumi, Yasuo Kitaoka, Kazuhisa Yamamoto | 2002-08-27 |
| 6353495 | Method for forming a ferroelectric domain-inverted structure | Kazuhisa Yamamoto, Tatsuo Kawaguchi, Minoru Imaeda | 2002-03-05 |
| 6333943 | Optical device, laser beam source, laser apparatus and method of producing optical device | Kazuhisa Yamamoto, Yasuo Kitaoka, Makoto Kato | 2001-12-25 |
| 6327289 | Wavelength-variable semiconductor laser, optical integrated device utilizing the same, and production method thereof | Yasuo Kitaoka, Kazuhisa Yamamoto | 2001-12-04 |
| 6323990 | Method for stabilizing output of higher harmonic waves and short wavelength laser beam source using the same | Kazuhisa Yamamoto, Yasuo Kitaoka, Makoto Kato | 2001-11-27 |
| 6317546 | Optical waveguide device, and light source device and optical apparatus including the optical waveguide device | Ken'ichi Kasazumi, Yasuo Kitaoka, Kazuhisa Yamamoto | 2001-11-13 |
| 6298075 | Optical apparatus and method for producing the same | Yasuo Kitaoka, Kazuhisa Yamamoto, Makoto Kato, Kenichi Nishiuchi | 2001-10-02 |
| 6261858 | Wavelength-variable semiconductor laser, optical integrated device utilizing the same, and production method thereof | Yasuo Kitaoka, Kazuhisa Yamamoto | 2001-07-17 |
| 6069904 | Optical apparatus and method for producing the same | Yasuo Kitaoka, Kazuhisa Yamamoto, Makoto Kato, Tomoaki Uno, Kenichi Nishiuchi | 2000-05-30 |
| 6067393 | Optical apparatus and method for producing the same | Yasuo Kitaoka, Kazuhisa Yamamoto, Makoto Kato, Tomoaki Uno, Kenichi Nishiuchi | 2000-05-23 |
| 6002515 | Method for producing polarization inversion part, optical wavelength conversion element using the same, and optical waveguide | Kazuhisa Yamamoto, Yasuo Kitaoka | 1999-12-14 |
| 5991490 | Optical waveguide and optical wavelength conversion device | Tatuo Itou, Sigeki Ohnishi, Kazuhisa Yamamoto | 1999-11-23 |
| 5960259 | Optical apparatus and method for producing the same | Yasuo Kitaoka, Kazuhisa Yamamoto, Makoto Kato, Tomoaki Uno, Kenichi Nishiuchi | 1999-09-28 |
| 5943465 | Optical waveguide element, optical element, method for producing optical waveguide element and method for producing periodic domain-inverted structure | Tatsuo Kawaguchi, Takashi Yoshino, Minoru Imaeda, Kazuhisa Yamamoto | 1999-08-24 |
| 5936985 | Method for stabilizing output of higher harmonic waves and short wavelength laser beam source using the same | Kazuhisa Yamamoto, Yasuo Kitaoka, Makoto Kato | 1999-08-10 |
| 5872884 | Optical waveguide conversion device | Tatuo Itou, Sigeki Ohnishi, Kazuhisa Yamamoto | 1999-02-16 |
| 5836073 | Method of making optical wavelength converting device | Kazuhisa Yamamoto, Hisanao Sato | 1998-11-17 |
| 5835650 | Optical apparatus and method for producing the same | Yasuo Kitaoka, Kazuhisa Yamamoto, Makoto Kato, Tomoaki Uno, Kenichi Nishiuchi | 1998-11-10 |
| 5652674 | Method for manufacturing domain-inverted region, optical wavelength conversion device utilizing such domain-inverted region and method for fabricating such device | Kazuhisa Yamamoto | 1997-07-29 |
| 5619369 | Diffracting device having distributed bragg reflector and wavelength changing device having optical waveguide with periodically inverted-polarization layers | Kazuhisa Yamamoto | 1997-04-08 |
| 5515471 | Frequency doubler and short wave laser source using the same and optical data processing apparatus using the short wave laser source | Kazubisa Yamamoto | 1996-05-07 |
| 5506722 | Optical wavelength converting device for converting fundamental waves into harmonic waves and shorter wavelength coherent light generating apparatus with the device | Kazuhisa Yamamoto, Hisanao Sato | 1996-04-09 |
| 5452312 | Short-wavelength laser light source and optical information processing aparatus | Kazuhisa Yamamoto, Yasuo Kitaoka, Makoto Kato | 1995-09-19 |