Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11319605 | Heat treatment apparatus and heat treatment method | Wataru Yoshida, Towako Matsui, Takashi Sada, Tsuyoshi Mikami | 2022-05-03 |
| 10538821 | Heat treatment apparatus and heat treatment method | Wataru Yoshida, Towako Matsui, Takashi Sada, Tsuyoshi Mikami | 2020-01-21 |
| 10190185 | Hardening method of annular workpiece | Towako Matsui, Tsuyoshi Mikami | 2019-01-29 |
| 9709099 | Bearing ring and rolling bearing | Wataru Yoshida, Towako Matsui, Takashi Sada | 2017-07-18 |
| 8640341 | Method of producing rolling sliding member | Towako Matsui | 2014-02-04 |
| 8596875 | Bearing constituent member and process for producing the same, and rolling bearing having bearing constituent member | Tsuyoshi Mikami, Kentarou Ono, Chikara Nakajima | 2013-12-03 |
| 7413704 | Case hardening bearing steel having excellent toughness and rolling contact fatigue life in intermediate temperature | Akihiro Matsuzaki, Takashi Iwamoto, Masao Goto | 2008-08-19 |
| 7207933 | Carburized roller member made of high carbon chromium steel | Masao Goto | 2007-04-24 |
| 6893609 | Bearing material | Akihiro Matsuzaki, Takashi Iwamoto, Yoshio Yamazaki, Masao Goto | 2005-05-17 |
| 6874943 | Antifriction bearing and process for producing outer race for use in antifriction bearing | Masao Goto | 2005-04-05 |
| 6582532 | Steel for large bearing and parts for large bearing | Yutaka Kurebayashi, Sadayuki Nakamura, Kiyoyuki Hattori | 2003-06-24 |