Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8621286 | Fault information managing method and fault information managing program | — | 2013-12-31 |
| 8521308 | System, method and program for supervisory control | — | 2013-08-27 |
| 8315173 | Transmission apparatus and method for distributed management thereof | — | 2012-11-20 |
| 7747164 | Wavelength division multiplexing transmission system, wavelength division multiplexing transmission apparatus and method for controlling wavelength division multiplexing transmission apparatus | — | 2010-06-29 |
| 6771907 | Optical ring system | Yuuki Yoshifuji, Shuichi Iida, Takashi Yamazaki, Youko Nakabayashi, Shinya Nakamura +9 more | 2004-08-03 |
| 5998001 | Magnetic recording medium | Masaru Iwagaki | 1999-12-07 |
| 5354610 | Magnetic recording medium comprising a conductive underlayer containing carbon black and a magnetic layer containing tabular barium ferrite magnetic particles, .alpha. alumina, and binder resin | Hisato Kato, Hiromichi Enomoto, Akihiro Maezawa | 1994-10-11 |
| 5164239 | Magnetic disc assembly comprising a disc having a magnetic layer with a specified composition and a case having a specified liner | Hisato Kato, Hiroaki Yamagishi, Kazumasa Matsumoto | 1992-11-17 |