Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12215189 | Bisphenol composition and polycarbonate resin | Kei Uchiyama, Masashi Yokogi, Hiroki Shibata, Sora Tomita, Yuichi Yayama +4 more | 2025-02-04 |
| 11427523 | Bisphenol composition containing aromatic alcohol sulfonate and method for producing same, polycarbonate resin and method for producing same, and bisphenol production method | Kei Uchiyama, Takayuki Yoshida, Rie Konishi, Takaharu Oono | 2022-08-30 |