Issued Patents All Time
Showing 1–25 of 35 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8940266 | Large diamond crystal substrates and methods for producing the same | Hideaki Yamada, Akiyoshi Chayahara, Yoshiaki Mokuno | 2015-01-27 |
| 8876973 | Film of n type (100) oriented single crystal diamond semiconductor doped with phosphorous atoms, and a method of producing the same | Hiromitsu Kato, Satoshi Yamasaki, Hideyo Ookushi | 2014-11-04 |
| 8735907 | Ohmic electrode for use in a semiconductor diamond device | Takatoshi Yamada, Somu Kumaragurubaran | 2014-05-27 |
| 8349603 | Cantilever for measuring intra-cellular and inter-cellular microspaces | Yukihiro Aoki, Hiroshi UETSUKA, Chikashi Nakamura, Nobuo Shimamoto | 2013-01-08 |
| 8237170 | Schottky diamond semiconductor device and manufacturing method for a Schottky electrode for diamond semiconductor device | Kazuhiro Ikeda, Hitoshi Umezawa | 2012-08-07 |
| 8075359 | Phosphorus-doped diamond film allowing significantly reduced electron emission voltage, method for producing the same, and electron source using the same | Takatoshi Yamada | 2011-12-13 |
| 7960905 | Diamond electron source having carbon-terminated structure | Takatoshi Yamada, Christoph E. Nebel | 2011-06-14 |
| 6984918 | Saw device | Akihiro Hachigo, Katsuhiro Itakura, Satoshi Fujii, Hideaki Nakahata | 2006-01-10 |
| 6713941 | Surface acoustic wave element | Katsuhiro Itakura, Akihiro Hachigo, Hideaki Nakahata, Satoshi Fujii | 2004-03-30 |
| 6710513 | Surface acoustic wave device and substrate thereof | Hideaki Nakahata, Akihiro Hachigo, Natsuo Tatsumi, Takahiro Imai | 2004-03-23 |
| 6642813 | Surface acoustic wave device utilizing a ZnO layer and a diamond layer | Katsuhiro Itakura, Akihiro Hachigo, Satoshi Fujii, Hideaki Nakahata | 2003-11-04 |
| 6469416 | Surface acoustic wave device | Katsuhiro Itakura, Akihiro Hachigo, Hideaki Nakahata, Satoshi Fujii | 2002-10-22 |
| 6448688 | Hard carbon film and surface-acoustic-wave substrate | Satoshi Fujii, Tomoki Uemura, Yuichiro Seki, Hideaki Nakahata | 2002-09-10 |
| 6416865 | Hard carbon film and surface acoustic-wave substrate | Satoshi Fujii, Tomoki Uemura, Yuichiro Seki, Hideaki Nakahata | 2002-07-09 |
| 5814918 | Diamond-ZnO surface acoustic wave device | Hideaki Nakahata, Kenjiro Higaki, Satoshi Fujii, Hiroyuki Kitabayashi | 1998-09-29 |
| 5624853 | Method for forming heterojunction bipolar transistors | — | 1997-04-29 |
| 5536952 | Heterojunction bipolar transistor | — | 1996-07-16 |
| 5501909 | Polycrystalline diamond substrate and process for producing the same | Kenjiro Higaki, Hideaki Nakahata, Akihiro Hachigo | 1996-03-26 |
| 5500077 | Method of polishing/flattening diamond | Yoshiki Nishibayashi | 1996-03-19 |
| 5497726 | Method of manufacturing a surface acoustic wave element | Akihiro Hachigo, Hideaki Nakahata, Kenjiro Higaki | 1996-03-12 |
| 5463901 | Stacked piezoelectric surface acoustic wave device with a boron nitride layer in the stack | Akihiro Hachigo, Hideaki Nakahata, Naoji Fujimori | 1995-11-07 |
| 5446329 | Surface acoustic wave element | Hideaki Nakahata, Akihiro Hachigo, Kenjiro Higaki | 1995-08-29 |
| 5426340 | Surface acoustic wave device and method of manufacturing the same | Kenjiro Higaki, Hideaki Nakahata, Akihiro Hachigo | 1995-06-20 |
| 5401544 | Method for manufacturing a surface acoustic wave device | Hideaki Nakahata, Akihiro Hachigo, Naoji Fujimori | 1995-03-28 |
| 5390401 | Method for producing a surface acoustic wave device | Hideaki Nakahata, Akihiro Hachigo, Naoji Fujimori | 1995-02-21 |