Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4678161 | Ball valve | Yoshiaki Bando, Teruyoshi Asano, Shigenobu Kato | 1987-07-07 |
| 4192793 | Stabilizers for chlorine-containing resins | Toshihiko Matsuzawa, Noboru Iida, Naoji Makino, Itirow Hayasaka | 1980-03-11 |