Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4800214 | Open cell body made of hard vinyl chloride resin | Takeshi Watanabe, Kazuo Suzuki | 1989-01-24 |
| 4797426 | Hard polyvinyl chloride resin composition and open-cell foam made of said composition | Takeshi Watanabe, Kazuo Suzuki | 1989-01-10 |