Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5308654 | Method for lubricating steel tubing prior to cold drawing | Yoshio Nagae, Koji HETSUGI | 1994-05-03 |
| 5206843 | Apparatus for erasing information recorded on an information recording medium by applying light and a magnetic field over a plurality of recording tracks | — | 1993-04-27 |
| 4666617 | Cold rolling oil for steel sheet | Toshitake Katayama, Hiroshi Kuwamoto, Shuichi Iwado, Sakae Sonoda, Shoji Okamoto | 1987-05-19 |