Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6713521 | Method of preparing rigid polyurethane foam and composition of rigid polyurethane foam | Takuya Matsumoto, Keiji Ono, Takehiro Shimizu | 2004-03-30 |
| 4686145 | Magnetic recording medium, a process for preparing a magnetic recording medium and a binder composition therefor | Masaru Honda, Toshiaki Imokawa, Yoshito Harada, Katsumi Nagayasu | 1987-08-11 |