Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7850424 | Steam turbine power plant | Seiko Takahashi, Ryuichi Ishii, Nobuo Okita, Katsuya Yamashita, Yukio Shinozaki +2 more | 2010-12-14 |
| 7490959 | Light emitting apparatus, backlight apparatus, and electronic apparatus | — | 2009-02-17 |
| 7327026 | Vacuum diode-type electronic heat pump device and electronic equipment having the same | Kenji Shimogishi, Yoshihiko Matsuo | 2008-02-05 |
| 7238005 | Steam turbine power plant | Seiko Takahashi, Ryuichi Ishii, Nobuo Okita, Katsuya Yamashita, Yukio Shinozaki +2 more | 2007-07-03 |
| 7211891 | Electronic heat pump device, laser component, optical pickup and electronic equipment | Kenji Shimogishi, Yoshihiko Matsuo | 2007-05-01 |
| 7042819 | Optical pickup apparatus | — | 2006-05-09 |
| 6821360 | Heat-resisting steel, method for thermally treating heat-resisting steel, and components made of heat-resisting steel | Ryuichi Ishii, Masayuki Yamada | 2004-11-23 |
| 6499946 | Steam turbine rotor and manufacturing method thereof | Masayuki Yamada, Takao Inukai, Masataka Kikuchi, Joji Kaneko, Satoru Asai +2 more | 2002-12-31 |
| 6494970 | Heat resistant steel casting and method of manufacturing the same | Ryuichi Ishii, Masayuki Yamada | 2002-12-17 |
| 6368057 | Steam turbine | Toru Takahashi, Kenichi Imai, Ryou Oda | 2002-04-09 |
| 6193469 | High toughness heat-resistant steel, turbine rotor and method of producing the same | Ryuichi Ishii, Masayuki Yamada | 2001-02-27 |
| 6018282 | Voltage-controlled variable-passband filter and high-frequency circuit module incorporating same | — | 2000-01-25 |
| 5779821 | Rotor for steam turbine and manufacturing method thereof | Ryuichi Ishii, Masayuki Yamada | 1998-07-14 |
| 5716468 | Process for producing high-and low-pressure integral-type turbine rotor | Yasuhiko Tanaka, Yasumi Ikeda, Tsukasa Azuma, Masayuki Yamada | 1998-02-10 |
| 5611873 | High pressure-low pressure single cylinder turbine rotor and method of making | Masayuki Yamada | 1997-03-18 |
| 5560788 | Heat resisting steels | Masayuki Yamada, Ryuichi Ishii, Eiji Maeda, Tsukasa Azuma | 1996-10-01 |
| 5546496 | Light emitting display device having light receiving element for receiving light from light emitting element and self-holding and optical passage for guiding drive light to the light receiving element | Masahiko Kimoto, Masumi Nakamichi, Takahiro Funakoshi, Yasuhiro Wada, Takehiro Yamamoto | 1996-08-13 |