Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6104481 | Surface inspection apparatus | Akihiko Sekine, Yoichiro Iwa, Hiroaki Soma, Naoto Miki, Hisashi Isozaki | 2000-08-15 |
| 6100970 | Apparatus for inspecting slight defects on a photomask pattern | Akihiko Sekine, Toru Tojo, Mitsuo Tabata | 2000-08-08 |
| 6084716 | Optical substrate inspection apparatus | Yasushi Sanada, Toru Tojo, Mitsuo Tabata, Kyoji Yamashita, Hideo Nagai +3 more | 2000-07-04 |
| 5828457 | Sample inspection apparatus and sample inspection method | Mitsuo Tabata, Toru Tojo | 1998-10-27 |
| 5812259 | Method and apparatus for inspecting slight defects in a photomask pattern | Akihiko Sekine, Toru Tojo, Mitsuo Tabata | 1998-09-22 |
| 5673135 | Scanning projection optical device | Takuji Satoh, Toshiki Okumura | 1997-09-30 |
| 5448416 | Wide-field exposure optical system | Toshiki Okumura, Takuji Satoh | 1995-09-05 |
| 5369521 | Scanning type projector | — | 1994-11-29 |
| 5298096 | Method of producing a lens | Yukio Ishiba, Kunihiro Hayashi | 1994-03-29 |
| 4984890 | Method and an apparatus for aligning first and second objects with each other | Toru Tojo, Osamu Kuwabara, Masashi Kamiya | 1991-01-15 |
| 4902133 | Method and an apparatus for aligning first and second objects with each other | Toru Tojo, Osamu Kuwabara, Masashi Kamiya | 1990-02-20 |
| 4808002 | Method and device for aligning first and second objects relative to each other | Toru Tojo, Mitsuo Tabata | 1989-02-28 |
| 4711540 | Eye disease inspecting instrument | Shinichi Nishimura, Kazuyuki Sasaki | 1987-12-08 |
| 4711541 | Slit lamp and accessory device thereof | Shinichi Nishimura, Kazuyuki Sasaki | 1987-12-08 |
| 4702570 | Stereo-microscope with two observation optical systems each including a right angle prism and a roof right angle prism providing both rotation and relative separation adjustments | Shinichi Nishimura, Kazutoshi Takagi | 1987-10-27 |
| 4632528 | Method for determining refractive index of an object | Kazutoshi Takagi, Yoshitaka Torii | 1986-12-30 |
| 4601550 | Stereo-microscope with a common objective lens system | Shinichi Nishimura, Kazutoshi Takagi | 1986-07-22 |
| 4597650 | Specular microscope | Kazutoshi Takagi | 1986-07-01 |
| 4571842 | Lens judging apparatus of lens meter | Yukio Ikezawa | 1986-02-25 |
| 4564291 | Projection type lensmeter | Masayuki Takasu, Junji Kuroiwa | 1986-01-14 |