Issued Patents All Time
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4415680 | Water-impermeable polyolefin foam and process for preparing the same | Masahiro Ushirokawa, Takeshi Iwahama | 1983-11-15 |
| 4368218 | Method of making expandable thermoplastic polymer beads | Tatehiko Nishida, Masao Nakagawa | 1983-01-11 |