Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9263559 | Semiconductor device and radio communication device | Satoshi Sasaki, Yasunari Umemoto, Yasuo Osone, Tsutomu Kobori, Isao Ohbu +1 more | 2016-02-16 |
| 8860093 | Semiconductor device and radio communication device | Satoshi Sasaki, Yasunari Umemoto, Yasuo Osone, Tsutomu Kobori, Isao Ohbu +1 more | 2014-10-14 |
| 8742499 | Semiconductor device and manufacturing method thereof | Shizuki Nakajima, Hiroyuki Nagai, Yuji Shirai, Hirokazu Nakajima, Yu Hasegawa +2 more | 2014-06-03 |
| 8227836 | Semiconductor device and radio communication device | Satoshi Sasaki, Yasunari Umemoto, Yasuo Osone, Tsutomu Kobori, Isao Ohbu +1 more | 2012-07-24 |
| 8072001 | Heterojunction bipolar transistor and method for manufacturing the same, and power amplifier using the same | Isao Ohbu, Yasunari Umemoto, Atsushi Kurokawa | 2011-12-06 |
| 7804109 | Heterojunction bipolar transistor and method for manufacturing the same, and power amplifier using the same | Isao Ohbu, Yasunari Umemoto, Atsushi Kurokawa | 2010-09-28 |
| 7622756 | Semiconductor device and radio communication device | Satoshi Sasaki, Yasunari Umemoto, Yasuo Osone, Tsutomu Kobori, Isao Ohbu +1 more | 2009-11-24 |
| 7511315 | Semiconductor device and manufacturing method therefor | Satoru Konishi, Tsuneo Endo, Hirokazu Nakajima, Yasunari Umemoto, Satoshi Sasaki +2 more | 2009-03-31 |
| 7256434 | Heterojunction bipolar transistor and method for manufacturing the same, and power amplifier using the same | Isao Ohbu, Yasunari Umemoto, Atsushi Kurokawa | 2007-08-14 |
| 7045877 | Semiconductor protection device | Yasunari Umemoto, Hideyuki Ono, Tomonori Tanoue, Yasuo Ohsone, Isao Ohbu +2 more | 2006-05-16 |
| 6943387 | Semiconductor device, manufacturing thereof and power amplifier module | Isao Ohbu, Tomonori Tanoue, Yasunari Umemoto, Atsushi Kurokawa, Kazuhiro Mochizuki +2 more | 2005-09-13 |
| 5633516 | Lattice-mismatched crystal structures and semiconductor device using the same | Tomoyoshi Mishima, Katsuhiko Higuchi, Mitsuhiro Mori, Makoto Kudo | 1997-05-27 |
| 5514992 | Low-distortion cascode circuit | Satoshi Tanaka, Akishige Nakajima, Eiichi Hase | 1996-05-07 |
| 5019524 | Method of manufacturing a heterojunction bipolar transistor | Katsuhiko Mitani, Tomonori Tanoue, Masayoshi Kobayashi, Susumu Takahashi | 1991-05-28 |
| 4979009 | Heterojunction bipolar transistor | Tomonori Tanoue, Katsuhiko Mitani | 1990-12-18 |
| 4331506 | Method of manufacturing target of image pickup tube | Akira Sasano, Toshio Nakano, Ken Tsutsui, Tadaaki Hirai, Eiichi Maruyama | 1982-05-25 |