Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7708935 | Float bath bottom refractory brick and process for its production | Shuji Kabashima, Masamichi Yokotani | 2010-05-04 |
| 5763374 | Lubricating oil compositions of reduced high-temperature high-shear viscosity | Hidehiko Matsuya, Yoshihisa Ohta | 1998-06-09 |
| 5622924 | Viscosity index improver and lubricating oil | Hidehiko Matsuya, Yoshihisa Ohta | 1997-04-22 |
| 5344863 | Viscosity index improver | Shigeyuki Yoshida, Makoto Dakurige | 1994-09-06 |
| 5130359 | Viscosity index improver and method for producing the same | Tatsuya Ohsumi, Shigeyuki Yoshida, Yoshio Kano | 1992-07-14 |
| 5086020 | High zirconia fused cast refractory | Toshihiro Ishino, Nobuyuki Kido | 1992-02-04 |
| 4547223 | Cement-shrinkage-reducing agent and cement composition | Takaharu Goto, Takeshi Sato, Motohiko Ii | 1985-10-15 |