Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6783728 | Free-cutting steel for machine structural use having good machinability in cutting by cemented carbide tool | Takashi Kano | 2004-08-31 |
| 6773661 | Free-cutting steel | Masakazu Hayaishi | 2004-08-10 |
| 6764645 | Steel for machine structural use having good machinability and chip-breakability | Masakazu Hayaishi, Takashi Kano, Kazuhisa Ishida, Makoto Hobo | 2004-07-20 |
| 6649125 | Free-cutting steel | Masakazu Hayaishi | 2003-11-18 |
| 6582532 | Steel for large bearing and parts for large bearing | Sadayuki Nakamura, Kiyoyuki Hattori, Katsuhiko Kizawa | 2003-06-24 |
| 6203630 | Steel for induction quenching and machinery structural parts using the same | Yasushi Matsumura, Sadayuki Nakamura | 2001-03-20 |
| 5733388 | Steel composition for bearings and method of producing the same | Sadayuki Nakamura, Masao Goto, Atsuhiko Ohta | 1998-03-31 |
| 4927601 | Heat resisting bearing steel | Tomohito Iikubo | 1990-05-22 |