Issued Patents 2016
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9403957 | Sealing material | Masaru Otsuka, Katsuya Seki, Tomohiro Yamamoto | 2016-08-02 |
| 9316958 | Charge-controlled polyurethane foam and toner-conveying roller using the same | Satoru Kusano, Junichiro Sato, Katsuya Seki, Masaru Otsuka | 2016-04-19 |