YS

Yukio Sumiya

HI Hitachi: 2 patents #13,388 of 28,497Top 50%
HC Hitachi Construction Machinery Co.: 1 patents #701 of 1,234Top 60%
📍 Ibaraki, JP: #2,661 of 6,779 inventorsTop 40%
Overall (All Time): #1,655,230 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
5335547 Ultrasonic flaw detector Kichio Nakajima, Kazuo Honma, Takeshi Yamaguchi, Hiroshi Inamitsu, Eiji Minamiyama 1994-08-09
5220459 Optical disk driving with inertial damping spring supporting lens holder Atsushi Ichikawa, Akira Saito 1993-06-15
5119189 Stereoscopic imaging system Taro Iwamoto, Kichio Nakajima, Hiroshi Yamamoto, Yuko Okada 1992-06-02