Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11208608 | Refrigerator oil and working fluid composition for refrigerator | Kentaro Yamaguchi, Akira Tada, Tatsuki Nakajima, Takeshi Okido | 2021-12-28 |
| 11001779 | Refrigerator oil and refrigerator working fluid composition | Yohei Shono, Kentaro Yamaguchi, Yuya MIZUTANI, Takeshi Okido | 2021-05-11 |
| 10913918 | Refrigerating machine oil | Hiroko Shimpo, Kentaro Yamaguchi, Takeshi Okido | 2021-02-09 |