Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10227543 | Lubricant compositions | Shota ABE | 2019-03-12 |
| 9534188 | Lubricating oil composition | Shota ABE | 2017-01-03 |
| 8410035 | Viscosity modifier of lubricating oil for power transmission system and lubricating oil composition for power transmission system | Akihiro Matsuda, Satoshi Ikeda, Keiji Okada, Masaaki Kawasaki | 2013-04-02 |
| 7820607 | Viscosity modifier for lubricating oils, additive composition for lubricating oils, and lubricating oil compositions | Akihiro Matsuda, Satoshi Ikeda, Keiji Okada | 2010-10-26 |
| 7622433 | Lubricating oil composition and internal combustion engine oil | Keiji Okada, Masaaki Kawasaki, Satoshi Ikeda | 2009-11-24 |
| 7022766 | Olefin block copolymer, viscosity index improver for lubricating oils and lubricating oil composition | Keiji Okada, Shigenobu Ikenaga, Tomoaki Matsugi, Shinichi Kojoh, Terunori Fujita | 2006-04-04 |
| 6764985 | Viscosity modifier for lubricating oil and lubricating oil composition | Keiji Okada | 2004-07-20 |
| 6589920 | Viscosity modifier for lubricating oil and lubricating oil composition | Keiji Okada | 2003-07-08 |
| 6525007 | Viscosity modifier for lubricating oil and lubricating oil composition | Keiji Okada | 2003-02-25 |
| 6214779 | Lubricating oil or lubricating oil composition and fuel oil composition | Hideki Hirano, Masahide Tanaka, Kenichi Morizono, Keiji Okada | 2001-04-10 |
| 5013867 | Liquid oxidatively modified ethylenic random copolymer, process of making and use | Tatsuo Kinoshita, Shuji Minami, Kinya Mizui | 1991-05-07 |
| 4943658 | Liquid oxidatively modified ethylenic random copolymer, process of making and use | Tatsuo Kinoshita, Shuji Minami, Kinya Mizui | 1990-07-24 |
| 4922046 | Liquid polymer composition and use thereof | Tatsuo Kinoshita, Shuji Minami | 1990-05-01 |
| 4877557 | Lubricating oil composition | Kinya Mizui | 1989-10-31 |