Issued Patents All Time
Showing 1–25 of 43 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE48309 | Projection optical system, magnification projection optical system, magnification projection apparatus, and image projection apparatus | Atsushi Takaura, Kazuhiro Fujita | 2020-11-17 |
| RE45728 | Projection optical system, magnification projection optical system, magnification projection apparatus, and image projection apparatus | Atsushi Takaura, Kazuhiro Fujita | 2015-10-06 |
| RE45258 | Projection optical system, magnification projection optical system, magnification projection apparatus, and image projection apparatus | Atsushi Takaura, Kazuhiro Fujita | 2014-11-25 |
| 7938545 | Projection optical system, magnification projection optical system, magnification projection apparatus, and image projection apparatus | Atsushi Takaura, Kazuhiro Fujita | 2011-05-10 |
| 7922341 | Projection optical system, magnification projection optical system, magnification projection apparatus, and image projection apparatus | Atsushi Takaura, Kazuhiro Fujita | 2011-04-12 |
| 7705868 | Light emitting array with improved characteristics, optical writing unit, and image forming apparatus | Koji Masuda, Masahiro Ito | 2010-04-27 |
| 7637618 | Projection optical system, magnification projection optical system, magnification projection apparatus, and image projection apparatus | Atsushi Takaura, Kazuhiro Fujita | 2009-12-29 |
| 7637621 | Projection optical system, magnification projection optical system, magnification projection apparatus, and image projection apparatus | Atsushi Takaura, Kazuhiro Fujita | 2009-12-29 |
| 7631975 | Projection optical system, magnification projection optical system, magnification projection apparatus, and image projection apparatus | Atsushi Takaura, Kazuhiro Fujita | 2009-12-15 |
| 7441908 | Projection optical system, magnification projection optical system, magnification projection apparatus, and image projection apparatus | Atsushi Takaura, Kazuhiro Fujita | 2008-10-28 |
| 7048388 | Projection optical system, magnification projection optical system, magnification projection apparatus, and image projection apparatus | Atsushi Takaura, Kazuhiro Fujita | 2006-05-23 |
| 6545803 | Virtual screen display device | Makoto Obu, Akira Momose | 2003-04-08 |
| 6292305 | Virtual screen display device | Makoto Obu, Akira Momose | 2001-09-18 |
| 5970034 | Multiple-beam optical recording apparatus | Magane Aoki | 1999-10-19 |
| 5852499 | Method and device for determining fiber orientation of paper, and apparatus for removing image forming substance from paper | Kan Tomita, Takashi Mama | 1998-12-22 |
| 5729349 | Method and device for determining fiber orientation of paper, and apparatus for removing image forming substance from paper | Kan Tomita, Takashi Mama | 1998-03-17 |
| 5666220 | Optical scanner and polygon mirror | — | 1997-09-09 |
| 5606181 | Edge emitting type light emitting diode array heads | Seizo Suzuki, Hiromichi Atsuumi, Takeshi Ueda, Yasutaka Izumi | 1997-02-25 |
| 5426298 | Optical scanner | Hiromichi Atsuumi, Osamu Endou, Akihisa Itabashi | 1995-06-20 |
| 5408095 | Optical scanner having an image forming mirror and means for reducing scanning line pitch irregularities | Hiromichi Atsuumi, Osamu Endou | 1995-04-18 |
| 5373390 | Optical scanning system | — | 1994-12-13 |
| 5233454 | Image forming reflecting mirror for constant speed optical scan and optical scanner | Hiromichi Atsuumi, Osamu Endou | 1993-08-03 |
| 5233455 | Scanning optical system | Katsumi Yamaguchi | 1993-08-03 |
| 5170278 | Return optical deflecting element, optical deflecting element and optical scanner | Yoshishige Wada | 1992-12-08 |
| 5157534 | Optical scanner | Osamu Endou, Takayuki Ohsawa | 1992-10-20 |