Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7993473 | Heat treatment oil composition | Masahiro Kobessho, Katsumi Ichitani, Yasuyuki Fujiwara, Yoshimi Aoyama | 2011-08-09 |
| 7851422 | Quenching oil for reduced pressure quenching and method for quenching | Katsumi Ichitani | 2010-12-14 |
| 7503985 | Quenching method | Katsumi Ichitani | 2009-03-17 |
| 7347927 | Oil composition for heat treatment | Katsumi Ichitani | 2008-03-25 |
| 6403225 | Article superior in slipping waterdrops down surface thereof | Ikuo Narisawa, Heihachi Murase, Toshihiro Takekawa, Yasuaki Kai, Tetsuro Tayu | 2002-06-11 |
| 6114446 | Polymer composition capable of forming surface slidable on water | Ikuo Narisawa, Heihachi Murase | 2000-09-05 |