Assignee
- National University Corporation Hokkaido University
- National University Corporation Gunma University
- Nisshinbo Industries
Inventors
- Haruo Kumagai (2 patents)
- Unknown
- Asao Oya (3 patents)
- Takafumi Ishii (24 patents)
- Takuya Maie (4 patents)
- Rieko Kobayashi (6 patents)
- Yasuo Imashiro (59 patents)