Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9637703 | Lubricant composition | Shigeki Matsui, Akio Mutou, Mari Nagae | 2017-05-02 |
| 9447359 | Lubricant composition | Shigeki Matsui | 2016-09-20 |
| 9404062 | Lubricant oil composition | Shigeki Matsui, Teppei Tsujimoto | 2016-08-02 |
| 9376645 | Lubricating oil composition for internal combustion engine | Kazuhiro Yagishita, Koji Hoshino, Shigeki Matsui | 2016-06-28 |
| 9353329 | Lubricating oil composition | Hiroya Miyamoto | 2016-05-31 |
| 9029303 | Lubricant oil composition | Shigeki Matsui, Reiko Kudo | 2015-05-12 |
| 8999904 | Lubricant oil composition and method for making the same | Shigeki Matsui, Reiko Kudo, Hiroya Miyamoto, Teppei Tsujimoto | 2015-04-07 |
| 8796194 | Lubricant composition | Akio Mutou, Shigeki Matsui | 2014-08-05 |
| 8785359 | Lubricant oil composition | Shigeki Matsui, Teppei Tsujimoto | 2014-07-22 |
| 8642517 | Lubricant oil composition | Shigeki Matsui | 2014-02-04 |
| 8258087 | Lubricating oil composition for internal combustion engine | — | 2012-09-04 |
| 8071518 | Low ash engine oil composition | Kazuhiro Yagishita, Kenichi Komiya | 2011-12-06 |
| 7838709 | Lubricating base oil and lubricating oil composition | Shigeki Matsui, Kazuo Tagawa, Shinichi Shirahama | 2010-11-23 |
| 7790659 | Lubricating oil compositions | Kazuhiro Yagishita | 2010-09-07 |
| 5744430 | Engine oil composition | Kiyoshi Inoue, Yasuhisa Yamada, Masakuni Hirata | 1998-04-28 |