YH

Yoshihiro Hayakawa

Sumitomo Electric Industries: 18 patents #1,247 of 21,551Top 6%
BL Bridgestone Tire Company Limited: 4 patents #49 of 438Top 15%
SH Shimadzu: 2 patents #805 of 2,007Top 45%
JT Japan Science And Technology: 1 patents #225 of 836Top 30%
KT Kabushiki Kaisha Toshiba: 1 patents #13,537 of 21,451Top 65%
ML Mitaka Instrument Company Limited: 1 patents #6 of 10Top 60%
Overall (All Time): #155,805 of 4,157,543Top 4%
26
Patents All Time

Issued Patents All Time

Showing 26–26 of 26 patents

Patent #TitleCo-InventorsDate
4250939 Super rigid rubber composition and a tire using the same Shoson Shibata, Akio Sato, Fumio Bamba 1981-02-17