Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10351507 | Carbonate ester purification method, carbonate ester solution production method, and carbonate ester purification apparatus | Hirofumi Ii, Yohei Shimasaki, Koji Okano, Koji Takebayashi, Naoto Nakao | 2019-07-16 |
| 10351508 | Carbonate ester purification method, carbonate ester solution production method, and carbonate ester purification apparatus | Hirofumi Il, Yohei Shimasaki, Koji Okano, Koji Takebayashi, Naoto Nakao | 2019-07-16 |
| 9835551 | Infrared gas analysis device, and method for using same | Hirofumi Il, Syuji Tanaka | 2017-12-05 |
| 9776950 | Ester production method and ester production device | Hirofumi Il, Syuji Tanaka | 2017-10-03 |
| 9499473 | Method for producing nitrous acid ester, and method for producing dialkyl oxalate and dialkyl carbonate | Syuji Tanaka, Hirofumi Il, Akira Hino, Satoshi Ueda | 2016-11-22 |