Issued Patents All Time
Showing 25 most recent of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9236387 | Semiconductor device and manufacturing method thereof | Kiyonori Oyu, Kazuto Mori | 2016-01-12 |
| 8704299 | Semiconductor device and manufacturing method thereof | Kiyonori Oyu, Kazuto Mori | 2014-04-22 |
| 8674455 | Semiconductor device | Kazuhiro Nojima, Kiyonori Oyu | 2014-03-18 |
| 7846826 | Method of manufacturing a semiconductor device with multilayer sidewall | Kiyonori Oyu | 2010-12-07 |
| 7737505 | Semiconductor device and method of forming the same | Kiyonori Ohyu | 2010-06-15 |
| 7700431 | Method for manufacturing a semiconductor device having polysilicon plugs | Kiyonori Ohyu, Kazutaka Manabe, Satoru Yamada, Takuo Ohashi | 2010-04-20 |
| 7666761 | Semiconductor device and manufacturing method thereof | Kiyonori Oyu, Hirotaka Kobayashi, Koji Hamada | 2010-02-23 |
| 7632696 | Semiconductor chip with a porous single crystal layer and manufacturing method of the same | Kiyonori Oyu, Koji Hamada, Hideharu Miyake, Yasushi Kozuki, Masaharu Watanabe | 2009-12-15 |
| 7338876 | Method for manufacturing a semiconductor device | Kiyonori Oyu | 2008-03-04 |
| 7186632 | Method of fabricating a semiconductor device having a decreased concentration of phosphorus impurities in polysilicon | Kazuo Ogawa, Kiyonori Ohyu, Toshihiro Imamura, Keiichi Watanabe, Hiroyuki Ohta | 2007-03-06 |
| 7151033 | Method for manufacturing a semiconductor device having a low junction leakage current | Kiyonori Oyu, Koji Hamada | 2006-12-19 |
| 7129141 | Method for manufacturing a semiconductor device having a low junction leakage current | Kiyonori Oyu | 2006-10-31 |
| 6448157 | Fabrication process for a semiconductor device | Takuo Ohashi | 2002-09-10 |
| 6323109 | Laminated SOI substrate and producing method thereof | — | 2001-11-27 |
| 6057036 | Semiconductor substrate having a serious effect of gettering heavy metal and method of manufacturing the same | — | 2000-05-02 |
| 6004406 | Silicon on insulating substrate | Kenya Kobayashi, Tomohiro Hamajima | 1999-12-21 |
| 5970366 | Method of removing metallic contaminants from simox substrate | — | 1999-10-19 |
| 5872388 | Semiconductor device and method for fabricating the same | — | 1999-02-16 |
| 5849102 | Method of cleaning a surface of a semiconductor substrate by a heat treatment in an inert gas atmosphere | — | 1998-12-15 |
| 5798294 | Semiconductor substrate having a serious effect of gettering heavy metal and method of manufacturing the same | — | 1998-08-25 |
| 5773152 | SOI substrate having a high heavy metal gettering effect for semiconductor device | — | 1998-06-30 |
| 5726089 | Semiconductor device and method for fabricating the same | — | 1998-03-10 |
| 5691231 | Method of manufacturing silicon on insulating substrate | Kenya Kobayashi, Tomohiro Hamajima | 1997-11-25 |
| 5529947 | Semiconductor device with clad substrate and fabrication process therefor | — | 1996-06-25 |
| 5420064 | Method of manufacturing a dielectric isolation substrate | Tsukasa Ohoka | 1995-05-30 |