YH

Yoshikazu Hayakawa

HI Hitachi: 39 patents #529 of 28,497Top 2%
PR Proterial: 7 patents #5 of 267Top 2%
Nissan Motor Co.: 6 patents #1,257 of 8,689Top 15%
HC Hitachi Cable: 3 patents #224 of 1,086Top 25%
Honda Motor Co.: 1 patents #12,035 of 21,052Top 60%
AC Asmo Co.: 1 patents #369 of 745Top 50%
NU National University: 1 patents #4 of 70Top 6%
Overall (All Time): #44,045 of 4,157,543Top 2%
56
Patents All Time

Issued Patents All Time

Showing 51–56 of 56 patents

Patent #TitleCo-InventorsDate
5189266 Vehicular exhaust resonance suppression system and sensing means therefore Akira Sasaki, Yuichi Sakuma, Tatsuo Sakai, Yoshinori Kihara 1993-02-23
4506561 Transmission housing 1985-03-26
4467754 Automotive internal combustion engine Yoshimasa Hayashi, Naoki Ogawa 1984-08-28
4445584 Motor vehicle equipped with engine noise emission preventing device Akira Kimura, Masao Ishihama 1984-05-01
4412514 Low noise level internal combustion engine Naoki Ogawa 1983-11-01
4193264 Pressured fluid supply system Koichi Takahashi, Keizaburo Usui 1980-03-18