Assignee
Inventors
- Heinojo Yamasaka (1 patents)
- Hiroyasu Uchiyama (1 patents)
- Hirotaka Masuda (4 patents)
- Yoshiomi Sakamoto (1 patents)
- Yoshimi Nakamigawa (1 patents)
- Mitsuko Yoshioka (2 patents)
- Terumasa Moriga (1 patents)
US Patent 5294439 · Granted Mar 15, 1994