Issued Patents All Time
Showing 26–50 of 59 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6246818 | Tunable optical filter | — | 2001-06-12 |
| 6048102 | Optical connector which provides a disconnection state between two optical fibers where light is totally reflected at an end face of one fiber | — | 2000-04-11 |
| 6018411 | Optical device utilizing magneto-optical effect | Hiroshi Onaka | 2000-01-25 |
| 6018412 | Optical attenuator | — | 2000-01-25 |
| 5999305 | Optical device which makes use of magneto-optical effect | — | 1999-12-07 |
| 5999313 | Optical device having function of optical circulator | — | 1999-12-07 |
| 5973821 | Variable optical attenuator which applies a magnetic field to a faraday element to rotate the polarization of light signal | Hiroshi Onaka | 1999-10-26 |
| 5905827 | Optical multiplexer/demultiplexer and wavelength division multiplexing module | Norihisa Naganuma, Teruhiro Kubo | 1999-05-18 |
| 5896201 | Optical device for wavelength monitoring and wavelength control | — | 1999-04-20 |
| 5889609 | Optical attenuator | — | 1999-03-30 |
| 5867300 | Variable optical attenuator which applies a magnetic field to a faraday element to rotate the polarization of a light signal | Hiroshi Onaka | 1999-02-02 |
| 5844710 | Faraday rotator and optical device employing the same | — | 1998-12-01 |
| 5822124 | Beam splitter | Hiroaki Matsuda, Hideki Noda | 1998-10-13 |
| 5812304 | Faraday rotator which generates a uniform magnetic field in a magnetic optical element | Masataka Shirasaki | 1998-09-22 |
| 5812707 | Polarizer housing device for connecting a polarizer to an optical waveguide | Takashi Yamane, Shinya Sawae | 1998-09-22 |
| 5805759 | Optical equalizer having variable transmittance versus wavelength characteristics for attenuating light | — | 1998-09-08 |
| 5801892 | Optical device having an optical film with an incident angle thereupon variable | Norihisa Naganuma | 1998-09-01 |
| 5798865 | Beam splitter | Hiroaki Matsuda, Hideki Noda | 1998-08-25 |
| 5781347 | Optical device | — | 1998-07-14 |
| 5771118 | Beam splitter | Hiroaki Matsuda, Hideki Noda | 1998-06-23 |
| 5745283 | Method and apparatus for controlling optical amplifier used for optically amplifying wavelength-division multiplexed signal | Shinya Inagaki, Kenji Tagawa, Norifumi Shukunami | 1998-04-28 |
| 5745290 | Beam splitter | Hiroaki Matsuda, Hideki Noda | 1998-04-28 |
| 5731871 | Light quantity measuring device that can accurately measure quantity regardless of polarization of measured light | — | 1998-03-24 |
| 5699187 | Optical coupler | Hideki Noda, Hiroaki Matsuda | 1997-12-16 |
| 5696859 | Optical-filter array, optical transmitter and optical transmission system | Hiroshi Onaka, Hideyuki Miyata | 1997-12-09 |