Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D840172 | Sponge | Nagomi Makiuchi | 2019-02-12 |
| D738056 | Cleaning sponge | Akifumi Asano | 2015-09-01 |
| 7833600 | Double-sided pressure-sensitive adhesive sheet | — | 2010-11-16 |
| 6187111 | Vacuum carburizing method | Masaomi Waka, Toru Kadono, Tetsuya Okada, Naoaki Imai | 2001-02-13 |