Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12252567 | Acrylate-based copolymer, method for producing said copolymer, friction reducer using said copolymer, and lubricating composition containing said friction reducer | Kenji Yamamoto, Tsuyoshi Hiramatsu, Kazuki Marumo | 2025-03-18 |
| 11760954 | Lubricant composition and lubricating oil composition containing said lubricant composition | Kenji Yamamoto, Ryou HANAMURA | 2023-09-19 |