Issued Patents All Time
Showing 26–50 of 73 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7683676 | Signal-level detecting apparatus, optical receiver, and signal-level detecting method | — | 2010-03-23 |
| 7676152 | Optical power monitor for PON telecommunication | Tetsuji Yamabana, Kazuyuki Mori | 2010-03-09 |
| 7670015 | Optical switch controller and movable body controller | Kazuyuki Mori, Kensuke Takahashi, Toru Matsuyama | 2010-03-02 |
| 7562828 | Radio communication device, radio communication method and non-contact IC card reader/writer device | — | 2009-07-21 |
| 7440649 | Wavelength selective switch module | Yoshio Sakai, Kazuyuki Mori | 2008-10-21 |
| 7437037 | Optical module having gain member and partial reflection section waveguides formed on a substrate | Yukito Tsunoda, Tsuyoshi Yamamoto | 2008-10-14 |
| 7382166 | Signal amplification device | — | 2008-06-03 |
| 7349593 | Optical wavelength switch having planar lightwave circuit structure | Hidehiko Nakata, Koji Terada | 2008-03-25 |
| 7196310 | Light receiving device for optical communication system | Ken-ichi Nakamoto, Kazuyuki Mori, Hiromasa Tanaka | 2007-03-27 |
| 7103252 | Optical waveguide and fabricating method thereof | — | 2006-09-05 |
| 7095918 | Optical wavelength switch having planar lightwave circuit structure | Hidehiko Nakata, Koji Terada | 2006-08-22 |
| 7010207 | Optical waveguide device, and method for fabricating the optical waveguide device | Hidehiko Nakata | 2006-03-07 |
| 6915055 | Optical waveguide, fabrication method therefor and optical waveguide device | — | 2005-07-05 |
| 6907202 | Burst signal detection circuit | Shinichi Sakuramoto | 2005-06-14 |
| 6741772 | Optical multiplexer/demultiplexer and waveguide type optical coupler | — | 2004-05-25 |
| 6587004 | Signal amplifier and optical signal receiver using the same | — | 2003-07-01 |
| 6566959 | Amplifier circuit having a particular biasing arrangement | Norio Ueno | 2003-05-20 |
| 6313662 | High speed low voltage differential signal driver having reduced pulse width distortion | — | 2001-11-06 |
| 6292284 | Light emitting element driving apparatus | Toshiyuki Takauji, Toru Matsuyama, Tadao Inoue, Tadashi Ikeuchi | 2001-09-18 |
| 6292058 | Signal amplifying circuit connected to a transfer circuit having a known non-linear transfer characteristic | Kohei Shibata | 2001-09-18 |
| 6237348 | Process for transferring liquefied gases between containers | Masayoshi Imoto, Takashi Shibanuma | 2001-05-29 |
| 6169619 | Apparatus and method for reception of optical signal | — | 2001-01-02 |
| 6163215 | Variable gain amplifier | Kohei Shibata | 2000-12-19 |
| 6133332 | Process for producing phenolic resin foams | Takashi Shibanuma | 2000-10-17 |
| 6087408 | Process for the production of polyolefin resin foams | Takashi Shibanuma | 2000-07-11 |