Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7929402 | Optical pickup, optical information recording device, optical information recording method, optical information reproduction device, optical information reproduction method and optical information recording medium | Jingcheng Yuan | 2011-04-19 |
| 7728357 | Heterojunction bipolar transistor and manufacturing method thereof | Keiichi Murayama, Akiyoshi Tamura, Kenichi MIYAJIMA | 2010-06-01 |
| 7566920 | Bipolar transistor and power amplifier | Katsuhiko Kawashima, Masahiro Maeda, Keiichi Murayama | 2009-07-28 |
| 7449729 | Heterojunction bipolar transistor and method for fabricating the same | Kenichi MIYAJIMA, Keiichi Murayama | 2008-11-11 |