Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5682588 | Method for producing ferrous sintered alloy having quenched structure | Tadayuki Tsutsui, Kei Ishii, Sumihisa Kotani | 1997-10-28 |
| 5645355 | Bearing unit | Hidekazu Tokushima, Motohiro Miyasaka, Michihiro Aizawa, Katsutoshi Nii | 1997-07-08 |