Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9124499 | Frame transmission system | Makoto Takakuwa, Yasushi Nishine, Fumihiko Saito, Takashi Fukagawa, Mika Tokunaga +3 more | 2015-09-01 |
| 8284668 | Packet transmission apparatus, line interface unit, and control method for packet transmission apparatus | — | 2012-10-09 |
| 8086770 | Communication apparatus with data discard functions and control method therefor | Takanori Yasui, Hideki Shiono, Hirofumi Fujiyama, Satoshi Tomie, Kenji Fukunaga | 2011-12-27 |
| 7912054 | Method and apparatus for multicast packet readout control | Masayuki Ogawa, Kenji Miura, Hiroshi Urano | 2011-03-22 |
| 7907632 | Data output apparatus, communication apparatus and switch apparatus | Hiroshi Urano, Toshihiro Koji, Masayuki Ogawa, Kenji Fukunaga | 2011-03-15 |
| 7706391 | Packet transmission method and device | Kenji Fukunaga, Toshihiro Koji, Masayuki Ogawa, Hiroshi Urano | 2010-04-27 |
| 7415111 | Optical network unit and optical line terminal | Takashi Monzawa, Kenji Miura, Hideki Shiono, Yoshimi Toyoda, Toshinori Koyanagi +9 more | 2008-08-19 |
| 6848053 | Optical network unit and optical line terminal | Takashi Monzawa, Kenji Miura, Hideki Shiono, Yoshimi Toyoda, Toshinori Koyanagi +9 more | 2005-01-25 |
| 6795398 | ATM cell multiplexer | Yoshimi Toyoda, Kenji Miura, Takashi Monzawa, Jun Asato, Hideki Shiono | 2004-09-21 |
| 6650841 | Optical subscriber line terminal unit and a state transition control method | Kenji Miura, Takashi Monzawa, Yoshimi Toyoda, Jun Asato, Toshinori Koyanagi +1 more | 2003-11-18 |
| 6647210 | Delay adjustment unit and method, optical network unit, and communication system | Yoshimi Toyoda, Takashi Monzawa, Kenji Miura, Jun Asato, Toshinori Koyanagi +2 more | 2003-11-11 |
| 5544137 | Optical disc record/playback apparatus | Shunji Ohara, Kenzou Ishibashi | 1996-08-06 |
| 5359584 | Data recording/reproducing method and apparatus having means for reliable detection of unrecorded sectors | Yoshihisa Fukushima, Isao Satoh, Yuzuru Kuroki | 1994-10-25 |
| 5151893 | Optical data recording and reproducing apparatus | Yukihiro Yamasaki, Toshio Suetsugu, Hideo Okamura | 1992-09-29 |
| 4800548 | Optical recording and reproducing apparatus with abnormality detector | Kenji Koishi | 1989-01-24 |
| 4754460 | Drive circuit for semiconductor laser of opto-electric recording/playback apparatus | Mari Kimura, Kenji Koishi | 1988-06-28 |
| 4736352 | Optical recording medium and apparatus for recording and reproducing data therein | Isao Satoh | 1988-04-05 |
| 4701609 | Semiconductor laser drive circuit with peak detection and control | Kenji Koishi | 1987-10-20 |
| 4688203 | Optical recording and reproducing apparatus | Kenji Koishi, Isao Satoh | 1987-08-18 |
| 4319237 | Brightness adjusting circuit of liquid crystal matrix panel for picture display | Susumu Ide, Hiroyuki Irie | 1982-03-09 |