Issued Patents All Time
Showing 26–50 of 51 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7906942 | Control circuit of DC-DC converter with synchronous rectifier adjusting signal to improve efficiency at light loads and control method thereof | Kouhei Yamada | 2011-03-15 |
| 7851877 | Logic circuit and single-electron spin transistor | Masaaki Tanaka, Hai Nam Pham | 2010-12-14 |
| 7825485 | Spin transistor based on the spin-filter effect, and non-volatile memory using spin transistors | Masaaki Tanaka | 2010-11-02 |
| 7812578 | DC-DC converter | Kouhei Yamada, Tetsuya Kawashima, Akira Yamazaki | 2010-10-12 |
| 7764519 | Control circuit and method for controlling switching power supply | — | 2010-07-27 |
| 7714400 | Tunnel transistor having spin-dependent transfer characteristics and non-volatile memory using the same | Masaaki Tanaka | 2010-05-11 |
| 7671433 | Spin transistor based on the spin-filter effect, and non-volatile memory using spin transistors | Masaaki Tanaka | 2010-03-02 |
| 7545013 | Reconfigurable logic circuit using a transistor having spin-dependent transfer characteristics | Tomohiro Matsuno, Masaaki Tanaka | 2009-06-09 |
| 7528428 | Field-effect transistor with spin-dependent transmission characteristics and non-volatile memory using the same | Masaaki Tanaka | 2009-05-05 |
| 7423327 | Spin transistor based on the spin-filter effect and a non-volatile memory using spin transistors | Masaaki Tanaka | 2008-09-09 |
| 7397071 | Tunnel transistor having spin-dependent transfer characteristics and non-volatile memory using the same | Masaaki Tanaka | 2008-07-08 |
| 6613461 | Gallium nitride-based compound semiconductor chip and method for producing the same, and gallium nitride-based compound semiconductor wafer | — | 2003-09-02 |
| 6316922 | DC-DC converter which supresses power supply noise in low power circuit | Yasushi Katayama | 2001-11-13 |
| 6091083 | Gallium nitride type compound semiconductor light-emitting device having buffer layer with non-flat surface | Toshio Hata, Daisuke Hanaoka | 2000-07-18 |
| 5693180 | Dry etching method for a gallium nitride type compound semiconductor | Katsuki Furukawa | 1997-12-02 |
| 5654557 | Quantum wire structure and a method for producing the same | Mototaka Taneya, Hiroaki Kudo, Haruhisa Takiguchi | 1997-08-05 |
| 5361271 | Semiconductor laser | Haruhisa Takiguchi, Kazuhiko Inoguchi, Hiroaki Kudo, Mototaka Taneya | 1994-11-01 |
| 5345460 | Semiconductor laser device with window regions | Haruhisa Takiguchi, Seiki Yano, Kazuhiko Inoguchi, Hiroaki Kudo, Chitose Nakanishi +1 more | 1994-09-06 |
| 5309472 | Semiconductor device and a method for producing the same | Hiroaki Kudo, Kazuhiko Inoguchi, Haruhisa Takiguchi | 1994-05-03 |
| 5303255 | Distributed feedback semiconductor laser device and a method of producing the same | Hiroaki Kudo, Haruhisa Takiguchi, Kazuhiko Inoguchi, Chitose Nakanishi | 1994-04-12 |
| 5292685 | Method for producing a distributed feedback semiconductor laser device | Kazuhiko Inoguchi, Mototaka Taneya, Hiroaki Kudo, Chitose Nakanishi, Haruhisa Takiguchi | 1994-03-08 |
| 5280493 | Quantum wire laser | Haruhisa Takiguchi, Hiroaki Kudo, Mototaka Taneya | 1994-01-18 |
| 5070510 | Semiconductor laser device | Fumihiro Konushi, Hiroshi Nakatu, Kazuhiko Inoguchi, Toshiyuki Okumura, Akinori Seki +3 more | 1991-12-03 |
| 5027368 | Semiconductor laser device | Hiroaki Kudo, Haruhisa Takiguchi, Chitose Sakane | 1991-06-25 |
| 5007107 | Semiconductor laser device | Haruhisa Takiguchi, Hiroaki Kudo, Chitose Sakane | 1991-04-09 |