Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10076773 | Method for washing reactor | Shinya Takahashi, Kazuhiko Tasaka, Yuichi Tanaka | 2018-09-18 |
| 9988585 | Method for producing base oil for lubricant oils | Kazuaki Hayasaka, Yoshiyuki Nagayasu, Mayumi Yokoi, Tomohisa Hirano | 2018-06-05 |
| 9868912 | Method for producing lubricant oil base oil | Kazuaki Hayasaka, Yasushi Wada, Koshi TAKAHAMA | 2018-01-16 |
| 9845435 | Diesel fuel or diesel fuel base stock and production method thereof | Takuya Niitsuma | 2017-12-19 |
| 9839904 | Method for producing hydrogenation catalyst | — | 2017-12-12 |
| 9713807 | Method for producing hydroisomerization catalyst and method for producing lubricant base oil | Yoshiyuki Nagayasu, Kazuaki Hayasaka | 2017-07-25 |
| 9677012 | Method for producing lubricant base oil | Kazuaki Hayasaka, Yoshiyuki Nagayasu | 2017-06-13 |
| 9663422 | Method for producing lubricating-oil base oil | Yoshiyuki Nagayasu, Kazuaki Hayasaka, Koshi TAKAHAMA | 2017-05-30 |
| 9562200 | Method for producing lubricant base oil | Kazuaki Hayasaka, Yoshiyuki Nagayasu, Koshi TAKAHAMA | 2017-02-07 |
| 9493714 | Method for producing hydrocarbon oil and system for producing hydrocarbon oil | Kazuhiko Tasaka, Yuichi Tanaka | 2016-11-15 |
| 9487713 | Method for producing hydrocarbon oil | Kazuhiko Tasaka, Yuichi Tanaka | 2016-11-08 |
| 9475036 | Hydrogenation refining catalyst and method for producing a hydrocarbon oil | Yuichi Tanaka, Takuya Niitsuma, Kazuhiko Tasaka | 2016-10-25 |
| 9434902 | Method for producing jet fuel composition, and jet fuel composition | Takuya Niitsuma | 2016-09-06 |
| 9266099 | Regenerated hydrocracking catalyst and method for producing a hydrocarbon oil | Yuichi Tanaka, Takuya Niitsuma, Kazuhiko Tasaka | 2016-02-23 |
| 9186658 | Hydrocracking catalyst and method for producing a hydrocarbon oil | Yuichi Tanaka, Takuya Niitsuma, Kazuhiko Tasaka | 2015-11-17 |
| 9023195 | Process for hydrotreating naphtha fraction and process for producing hydrocarbon oil | Kazuhiko Tasaka, Yuichi Tanaka | 2015-05-05 |
| 8906969 | Process for producing hydrocarbon oil and system for producing hydrocarbon oil | Kazuhiko Tasaka, Yuichi Tanaka | 2014-12-09 |
| 8702969 | Hydrocracking process and process for producing hydrocarbon oil | Kazuhiko Tasaka, Yuichi Tanaka | 2014-04-22 |