Issued Patents All Time
Showing 51–75 of 88 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7196743 | Image display apparatus having particular phase difference | Atsushi Okuyama | 2007-03-27 |
| 7178548 | Dry safety device for an inflammable gas | — | 2007-02-20 |
| 7156520 | Color separating optical system, image display optical system, and projection image display apparatus | Tatsuo Chigira, Atsushi Okuyama | 2007-01-02 |
| 7137704 | Color splitting/combining optical system and image projecting apparatus | Atsushi Okuyama | 2006-11-21 |
| 7002641 | Projection display apparatus with quarter phase difference plate and phase compensation element | Atsushi Okuyama, Tatsuo Chigira | 2006-02-21 |
| 6992833 | Color combining optical system, projection-type display optical system, projection-type image display apparatus, and image display system | Tatsuo Chigira, Atsushi Okuyama | 2006-01-31 |
| 6991334 | Polarization beam splitting optical system | Atsushi Okuyama | 2006-01-31 |
| 6942345 | Projection type image display apparatus and image display system | Atsushi Okuyama, Keiji Otaka, Hiroyuki Kodama | 2005-09-13 |
| 6937728 | Verifiable anonymous channel | Fumitaka Hoshino, Miyako Ohkubo, Atsushi Fujioka | 2005-08-30 |
| 6918969 | Cast steel and steel material with excellent workability, method for processing molten steel therefor and method for manufacturing the cast steel and steel material | Masafumi Zeze, Takashi Morohoshi, Ryusuke Miura, Shintaro Kusunoki, Yasuhiro Kinari +4 more | 2005-07-19 |
| 6845447 | Electronic voting method and system and recording medium having recorded thereon a program for implementing the method | Atsushi Fujioka, Fumiaki Miura | 2005-01-18 |
| 6832548 | Sheet feeding device and printer including the same | Hideki Asai, Takayuki Onodera | 2004-12-21 |
| 6831706 | Projection image display apparatus | Keiji Ohtaka, Atsushi Okuyama | 2004-12-14 |
| 6774626 | Device and method for measuring the properties of a magnetic reproducing head | — | 2004-08-10 |
| 6645318 | Fuel tank made of ferritic stainless steel | Akihiko Takahashi, Shunji Sakamoto, Yuji Koyama, Katsuhiko Kato, Tadashi Komori +1 more | 2003-11-11 |
| 6639400 | Method and apparatus for measuring magnetic head | — | 2003-10-28 |
| 6617848 | Magnetic head measuring apparatus and measuring method applied to the same apparatus | — | 2003-09-09 |
| 6605941 | Method and apparatus for measuring characteristic of specimen and its application to high frequency response measurement with scanning probe microscopes | — | 2003-08-12 |
| 6585799 | Cast steel piece and steel product excellent in forming characteristics and method for treatment of molted steel therefor and method for production thereof | Masafumi Zeze, Takashi Morohoshi, Ryusuke Miura, Shintaro Kusunoki, Yasuhiro Kinari +4 more | 2003-07-01 |
| 6437562 | Magnetic field characteristics evaluation apparatus and magnetic field characteristics measuring method | — | 2002-08-20 |
| 6248461 | Electric power generating system | Hiroshi Matsuo | 2001-06-19 |
| 6132818 | Method of marking with laser beam | Chiharu Tanaka, Tatsuya Nakano, Mitsuo Yonemori, Takeshi Tomita | 2000-10-17 |
| 5889862 | Method and apparatus for implementing traceable electronic cash | Kazuo Ohta, Eiichiro Fujisaki, Atsushi Fujioka | 1999-03-30 |
| 5563522 | Microwave band probing apparatus | — | 1996-10-08 |
| 5514633 | Desiccant for HFC-32 and HFC-152A | Yoshitaka Noguchi, Shigeru Adachi, Sueo Takashima, Masayuki Hashimoto | 1996-05-07 |