Issued Patents All Time
Showing 76–100 of 117 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7457546 | Dispersion-managed optical transmission system | Takao Naito | 2008-11-25 |
| 7379233 | Raman amplifier utilizing pump modulation for expanding gain band width | Hiroshi Nakamoto, Takao Naito, Kenichi Torii | 2008-05-27 |
| 7242519 | Raman amplifier and optical transmission system using the same | Kenichi Torii, Takao Naito, Masahiro Yuki | 2007-07-10 |
| 7209654 | Optical transmission system | Takao Naito | 2007-04-24 |
| 7164864 | Optical communications system and transmission section repair method | Takao Naito | 2007-01-16 |
| 7034991 | Optical amplification and transmission system | Takao Naito | 2006-04-25 |
| 6985285 | Optical transmission system using Raman amplification | — | 2006-01-10 |
| 6954304 | Raman amplifier | Takao Naito | 2005-10-11 |
| 6930823 | Optical transmission method and optical transmission system utilizing Raman amplification | Hiroshi Nakamoto, Takao Naito, Naomasa Shimojoh | 2005-08-16 |
| 6831777 | Optical transmission system and method | Takao Naito | 2004-12-14 |
| 6791744 | Raman amplification optical fiber, optical fiber coil, raman amplifier, and optical communication system | Eisuke Sasaoka, Motoki Kakui, Masashi Onishi, Takao Naito | 2004-09-14 |
| 6724167 | Numerical control drive system | — | 2004-04-20 |
| 6709670 | Aminoethanesulfonic acid-containing preparations | Yasushi Furuta | 2004-03-23 |
| 6681082 | Wavelength division multiplexing optical transmission system, optical amplifier and dispersion compensator | Takao Naito | 2004-01-20 |
| 6671083 | Raman amplifier and optical transmission system | Kenichi Torii, Takao Naito | 2003-12-30 |
| 6639715 | Raman amplifier and optical transmission system using the amplifier | Takao Naito | 2003-10-28 |
| 6574038 | Optical transmission path having sections which overcompensate for dispersion occurring in the sections | Takao Naito | 2003-06-03 |
| 6534161 | Crystallized glass composition, sintered crystallized glass compact, and circuit substrate using the same | Hiromichi Kawakami, Shizuharu Watanabe, Hiroshi Takagi | 2003-03-18 |
| 6444598 | Insulator composition, insulator paste and laminated electronic part | Hiromichi Kawakami | 2002-09-03 |
| 6433923 | Optical transmission path having sections which overcompensate for dispersion occurring in the sections | Takao Naito | 2002-08-13 |
| 6324317 | Wavelength division multiplexing optical transmission system | Takao Naito | 2001-11-27 |
| 6270880 | Crystalline glass composition for use in circuit board, sintered crystalline glass, insulator composition insulating paste and thick film circuit board | Hiromichi Kawakami, Hirofumi Sunahara, Shizuharu Watanabe, Hiroshi Takagi | 2001-08-07 |
| 6233497 | Contact detecting method and an apparatus for the same | Mitsuyasu Kachi | 2001-05-15 |
| 6136473 | Hydrogen absorbing electrode, nickel electrode and alkaline storage battery | Kengo Furukawa, Hiroe Nakagawa, Yuichi Matsumura, Minoru Kuzuhara, Masuhiro Ohnishi +3 more | 2000-10-24 |
| 6008612 | Method for detecting contact position | Mitsuyasu Kachi | 1999-12-28 |