Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8188156 | Polyol composition, foaming composition and polyurethane foam | Kenji Yamanaka, Masayoshi Idomoto, Kouji Fukui, Masashi Obata, Masaaki Shibata | 2012-05-29 |
| 6667416 | Method and apparatus for producing polyester polyol, polyester polyol and polyurethane foam | Kouichi Murayama, Takashi Kumaki | 2003-12-23 |
| 6204300 | Low resilience urethane foam | Masakazu KAGEOKA, Takashi Kumaki | 2001-03-20 |
| 5112876 | Polyether polyol and rigid polyurethane foam | Yoshihiko Tairaka | 1992-05-12 |