Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6454959 | Piezoelectric ceramic material, sintered piezoelectric ceramic compact, and piezoelectric ceramic device | Katsuhiro Horikawa | 2002-09-24 |
| 6299791 | Piezoelectric ceramic material and piezoelectric ceramic sintered body obtained using the same | Katsuhiro Horikawa | 2001-10-09 |
| 6117355 | Piezoelectric ceramic composition and piezoelectric element using the piezoelectric ceramic composition | Katsuhiro Horikawa, Koichi Hayashi, Akira Ando | 2000-09-12 |
| 4831858 | Driving apparatus for vertical rolling mill | Ginjiro Yanai, Seiichi Matsuda | 1989-05-23 |