HO

Hisao Oka

SH Sumitomo Electric Hardmetal: 2 patents #166 of 278Top 60%
Kawasaki: 1 patents #1,551 of 2,943Top 55%
Sumitomo Electric Industries: 1 patents #13,249 of 21,551Top 65%
US US Dept of Health & Human Services: 1 patents #1,144 of 3,044Top 40%
Overall (All Time): #1,505,291 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
9308589 Drill Yoshiji Sato, Kiichi Meguro, Junichi Tamura, Satoshi Suzuki 2016-04-12
8562261 End mill Tatsuya Shino, Kazuo Maeda 2013-10-22
5169521 Apparatus for countercurrent chromatography separations Yoichiro Ito 1992-12-08