Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11840617 | Stabilizer composition, vinyl chloride resin composition containing same, and article molded therefrom | Hiroshi Nishimura, Kazumasa Tanaka | 2023-12-12 |
| 9382406 | Vinyl chloride resin composition for transparent products | Tadashi Sengoku, Kazumasa Tanaka | 2016-07-05 |