Assignee
Inventors
- Setsuro Fujii (70 patents)
- Kaoruko Takada, legal heir (3 patents)
- Tamiki Katano (1 patents)
- Eiji Majima (4 patents)
- Koichi Ogino (4 patents)
- Kenji Ono (5 patents)
- Yasuyo Sakata (1 patents)
- Tsutomu Uenoyama (1 patents)
US Patent 5240845 · Granted Aug 31, 1993