Issued Patents All Time
Showing 26–50 of 75 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10280531 | Diamond single crystal and production method thereof, and single crystal diamond tool | Akihiko Ueda, Hitoshi Sumiya | 2019-05-07 |
| 9963801 | Single crystal diamond and diamond tool | Akihiko Ueda, Hitoshi Sumiya, Yutaka Kobayashi, Yuichiro Seki, Toshiya Takahashi | 2018-05-08 |
| 9957640 | Single crystal diamond and diamond tool | Akihiko Ueda, Hitoshi Sumiya, Yutaka Kobayashi, Yuichiro Seki, Toshiya Takahashi | 2018-05-01 |
| 9441312 | Diamond single crystal, method for producing the same, and single crystal diamond tool | Akihiko Ueda, Hitoshi Sumiya | 2016-09-13 |
| 8119241 | Method for manufacturing diamond monocrystal having a thin film, and diamond monocrystal having a thin film | Akihiko Ueda, Kiichi Meguro, Yoshiyuki Yamamoto, Takahiro Imai | 2012-02-21 |
| 7902734 | Electron emission element and electron emission element fabrication method | Yoshiyuki Yamamoto, Natsuo Tatsumi, Takahiro Imai | 2011-03-08 |
| 7898161 | Diamond electron radiation cathode, electron source, electron microscope, and electron beam exposer | Yoshiyuki Yamamoto, Akihiko Ueda, Takahiro Imai | 2011-03-01 |
| 7863805 | Diamond electron emission cathode, electron emission source, electron microscope, and electron beam exposure device | Yoshiyuki Yamamoto, Akihiko Ueda, Takahiro Imai | 2011-01-04 |
| 7737614 | Diamond electron emission cathode, electron emission source, electron microscope, and electron beam exposure device | Akihiko Ueda, Yoshiyuki Yamamoto, Takahiro Imai | 2010-06-15 |
| 7710013 | Electron emitting device with projection comprising base portion and electron emission portion | Natsuo Tatsumi, Akihiko Namba, Takahiro Imai | 2010-05-04 |
| 7534360 | Method of making diamond product and diamond product | Kiichi Meguro, Takahiro Imai, Yutaka Ando | 2009-05-19 |
| 7476895 | Method of fabricating n-type semiconductor diamond, and semiconductor diamond | Akihiko Namba, Takahiro Imai | 2009-01-13 |
| 7432521 | Logical operation element field emission emitter and logical operation circuit | Natsuo Tatsumi, Takahiro Imai, Tsuneo Nakahara | 2008-10-07 |
| 7323812 | Process for producing diamond electron emission element and electron emission element | Natsuo Tatsumi, Akihiko Namba, Takahiro Imai | 2008-01-29 |
| 7307377 | Electron emitting device with projection comprising base portion and electron emission portion | Natsuo Tatsumi, Akihiko Namba, Takahiro Imai | 2007-12-11 |
| 7172957 | Method of fabricating n-type semiconductor diamond, and semiconductor diamond | Akihiko Namba, Takahiro Imai | 2007-02-06 |
| 7147918 | Microfabricated diamond element and method of fabricating microfabricated diamond element | Yutaka Ando, Takahiro Imai | 2006-12-12 |
| 7026750 | Electron emission element | Takahiro Imai, Yutaka Ando | 2006-04-11 |
| 6958571 | Electron-emitting device | Yutaka Ando, Kiichi Meguro, Takahiro Imai | 2005-10-25 |
| 6876136 | Electron emission element | Yutaka Ando, Takahiro Imai | 2005-04-05 |
| 6709730 | Method of making diamond product and diamond product | Kiichi Meguro, Takahiro Imai, Yutaka Ando | 2004-03-23 |
| 6423982 | Diamond interconnection substrate and a manufacturing method therefor | Takashi Matsuura, Takahiro Imai | 2002-07-23 |
| 6270848 | Heat sink material for use with semiconductor component and method for fabricating the same, and semiconductor package using the same | — | 2001-08-07 |
| 6171691 | Heat sink material for use with semiconductor component and method for fabricating the same, and semiconductor package using the same | — | 2001-01-09 |
| 6031285 | Heat sink for semiconductors and manufacturing process thereof | — | 2000-02-29 |