Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5677377 | Polypropylene lining | Shigeo Hasegawa, Takafumi Shimada, Ryuji Yoshiyama, Kenji Iwasaki, Takayoshi Kawaoka | 1997-10-14 |
| 5677378 | Polypropylene lining | Shigeo Hasegawa, Takafumi Shimada, Ryuji Yoshiyama, Kenji Iwasaki, Takayoshi Kawaoka | 1997-10-14 |