YH

Yasuo Hayakawa

AC Alps Electric Co.: 16 patents #64 of 2,177Top 3%
Tdk: 6 patents #953 of 3,796Top 30%
HC Hitachi Construction Machinery Co.: 4 patents #303 of 1,234Top 25%
📍 Ibaraki, JP: #242 of 6,779 inventorsTop 4%
Overall (All Time): #147,398 of 4,157,543Top 4%
27
Patents All Time

Issued Patents All Time

Showing 26–27 of 27 patents

Patent #TitleCo-InventorsDate
4862383 Ultrasonic inspection apparatus Chishio Koshimizu, Toshio Nonaka, Sakae Takeda 1989-08-29
4768155 Supersonic flaw detecting system Yoshihiko Takishita, Toshio Nonaka 1988-08-30