Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5858899 | Aluminum oxide based sintered body | Jun Otsuka, Satoshi Iio | 1999-01-12 |
| 5527746 | Method for manufacturing an aluminum oxide sintered body | Jun Otsuka, Satoshi Iio | 1996-06-18 |
| 5406371 | Apparatus for measuring birefringence and retardation | Kiyokazu Sakai, Shinichi Nagata, Osamu Tomita | 1995-04-11 |
| 5326733 | Silicon nitride sintered product excellent in wear resistance | Ken Mizuno | 1994-07-05 |
| 5286684 | Aluminum oxide-based sintered object and process for producing the same | Jun Otsuka, Satoshi Iio | 1994-02-15 |
| 5114888 | Silicon nitride sintered body and method for producing same | Kenichi Mizuno, Masakazu Watanabe | 1992-05-19 |
| 5049531 | Silicon nitride sintered body | Kenji Nakanishi, Masakazu Watanabe | 1991-09-17 |
| 5032554 | Sintered silicon nitride products | Kenichi Mizuno, Masakazu Watanabe | 1991-07-16 |
| 4897537 | Automatic focus adjusting system of microscope employed in surface inspection apparatus | Seiichi Miyamoto, Masaru Maruki, Masaru Hanatani | 1990-01-30 |
| 4880756 | Silicon nitride sintered product | Kazuhiro Urashima, Masakazu Watanabe, Kenji Nakanishi | 1989-11-14 |
| 4829374 | Surface inspection apparatus | Seiichi Miyamoto, Masaru Hanatani | 1989-05-09 |