Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11702614 | Lubricating oil composition | Mona Ishii | 2023-07-18 |
| 10443016 | Lubricating oil composition for gear oil | — | 2019-10-15 |
| 10227541 | Lubricating oil composition for transmissions | Kohei Masuda, Hajime Nakao | 2019-03-12 |
| 9567546 | Lubricating oil composition | — | 2017-02-14 |
| 9540587 | Lubricating oil composition for transmissions | Hajime Nakao, Kazunori Ishikawa, Katsuhito Yamada | 2017-01-10 |
| 9382499 | Lubricating oil composition | — | 2016-07-05 |
| 9376646 | Lubricating oil composition | — | 2016-06-28 |
| 9340747 | Lubricating oil composition for transmissions | Hajime Nakao | 2016-05-17 |
| 9253370 | Normalization method for a value of an equivalent lightness and a value of a degree of vividness of an arbitrary color, tone type identification method, munsell value calculating method, image formation method and interface screen display device | Shinji Kobayashi, Koichi Nakagawa | 2016-02-02 |
| 9120992 | Gear oil composition | Hajime Nakao | 2015-09-01 |
| 9012380 | Lubricant base oil, lubricant composition for internal combustion engine and lubricant composition for driving force transmitting device | Takashi Sano, Hisayuki Wada, Osamu Kurosawa, Masaaki Itou, Shigeki Matsui +6 more | 2015-04-21 |
| 8921287 | Lubricating oil composition | Masato Takahashi, Shigeki Matsui | 2014-12-30 |
| 8450253 | Lubricating oil composition | — | 2013-05-28 |
| 8030255 | Lubricating oil composition | Shigeki Matsui | 2011-10-04 |