Inventor: Konishi, Kunihiro
Inventor: Kotobuki, Kazuo, Sanada, Tetsuro
Inventor: Murakami, Yasuyuki
Inventor: Tachibana, Ryuichi, Suzuki, Kenichi
Inventor: Kotobuki, Kazuo, Masuda, Tetsuo
Inventor: Yoshida, Yoshio, Tsuchiya, Shichiro
Inventor: Shinozaki, Satoshi, Sano, Hiroyuki
Inventor: Murakami, Yasuyuki
Inventor: Machida, Yutaka, Kotobuki, Kazuo