Assignee
Inventors
- Takashi Nakagawa (21 patents)
- Hiroko Tsukahara (2 patents)
- Masayasu Kurono (73 patents)
- Makoto Sato (30 patents)
- Tsutomu Ishida (5 patents)
- Kazushi Tokita (2 patents)
- Mitsuji Nakano (1 patents)
US Patent 5260064 · Granted Nov 9, 1993