Assignee
Inventors
- Masakatsu Matsumoto (24 patents)
- Nobuko Watanabe (15 patents)
- Eiko Mori (9 patents)
- Miwa Ishihara (2 patents)
- Tetsuaki Yamaura (15 patents)
- Misao Aoyama (3 patents)
- Hiroshi Ikawa (26 patents)
- Hisako Kobayashi (6 patents)
US Patent 5393780 · Granted Feb 28, 1995