Issued Patents All Time
Showing 26–50 of 60 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9365046 | Ink circulation type inkjet printer | Hiroshi Sugitani, Akira Nishiyama | 2016-06-14 |
| 9340031 | Ink circulation type inkjet printer | Hiroshi Sugitani, Akira Nishiyama | 2016-05-17 |
| 9272524 | Ink circulation type inkjet printer | Hiroshi Sugitani, Isao MATSUSHIMA | 2016-03-01 |
| 9261716 | Optical semiconductor device and optical semiconductor device control method | — | 2016-02-16 |
| 9239475 | Optical semiconductor element having ring modulators | — | 2016-01-19 |
| 9229249 | Optical semiconductor device | — | 2016-01-05 |
| 9219347 | Optical semiconductor device | — | 2015-12-22 |
| 9182647 | Control method of optical element | — | 2015-11-10 |
| 9184865 | Optical switch, optical demodulator, and optical demodulation method having feedback control of temperature regulator based on optical detector output | — | 2015-11-10 |
| 9061516 | Inkjet printer | Hiroshi Sugitani, Akira Nishiyama | 2015-06-23 |
| 9016843 | Inkjet printer | Akira Nishiyama, Hiroshi Sugitani | 2015-04-28 |
| 9002147 | Optical semiconductor device | — | 2015-04-07 |
| 8896911 | Laser system | Mitsuru Sugawara, Makoto Usami | 2014-11-25 |
| 8215754 | Detachable structure for ink cartridge, and control method for attaching/detaching ink cartridge | — | 2012-07-10 |
| 8197042 | Detachable structure for ink cartridge | — | 2012-06-12 |
| 8160116 | Semiconductor laser and method for manufacturing the same | Mitsuru Sugawara | 2012-04-17 |
| 7808698 | Semiconductor device | — | 2010-10-05 |
| 7616377 | Optical repeater | — | 2009-11-10 |
| 7443574 | Optical transmission system | — | 2008-10-28 |
| 7375878 | Optical repeater | — | 2008-05-20 |
| 7288783 | Optical semiconductor device and method for fabricating the same | — | 2007-10-30 |
| 7280272 | Bias control of SOA via switches | — | 2007-10-09 |
| 7167301 | Semiconductor optical amplifier suitable for coarse WDM communications and light amplification method | — | 2007-01-23 |
| 7123838 | Optical time-division multiplex signal processing apparatus and method, optical time-division multiplex signal receiver | — | 2006-10-17 |
| 7081983 | Wavelength conversion device | Nobuaki Hatori, Mitsuru Sugawara | 2006-07-25 |