Assignee
Inventors
- Hisao Nakanishi (9 patents)
- Kinjiro Sano (8 patents)
- Toyokazu Kamata (6 patents)
- Keiji Watanabe (117 patents)
- Masato Saito (96 patents)
- Ryo Suzuki (241 patents)
- Keiji Fukuyama (15 patents)
- Masako Ishida (4 patents)
US Patent 5122707 · Granted Jun 16, 1992