Assignee
Inventors
- Kazuo Iwata (1 patents)
- Tetsuo Takematsu (65 patents)
- Yuji Nonaka (20 patents)
- Akira Nakanishi (18 patents)
- Hideo Morinaka (7 patents)
- Kenji Tsuzuki (18 patents)
- Mitsuyuki Murakami (6 patents)
- Takeshi Uotani (3 patents)
US Patent 4621090 · Granted Nov 4, 1986