Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9007581 | Inspection method and inspection device | Hirokazu Koyabu, Yuta Urano, Takahiro Jingu | 2015-04-14 |
| 7777876 | Inspection method and inspection device | Hirokazu Koyabu, Yuta Urano, Takahiro Jingu | 2010-08-17 |
| 6888918 | Surface inspection method and surface inspection apparatus | Kenji Aikou, Kyoichi Mori | 2005-05-03 |
| 6057926 | Magnetic disk testing method and surface defect testing device | — | 2000-05-02 |
| 5898491 | Surface defect test method and surface defect tester | Takayuki Ishiguro, Kazuya Tsukada | 1999-04-27 |
| 5875027 | Sensitivity calibration disk for surface defect tester | Takayuki Ishiguro, Kazuya Tsukada | 1999-02-23 |
| 5245403 | Apparatus for detecting extraneous substances on a glass plate | Noboru Kato, Toshihiro Kimura, Mitsuyoshi Koizumi | 1993-09-14 |