Inventor

OKA HISAO

JP3 patents

⚠️ This page may combine multiple inventors who share the name “OKA HISAO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

US HEALTH

1 patent

US5169521ADec 8, 1992

Apparatus for countercurrent chromatography separations

US HEALTH32 citations90

OKA HISAO

1 patent

US8562261B2Oct 22, 2013

End mill

OKA HISAO7 citations76

SUMITOMO ELECTRIC INDUSTRIES

1 patent

US9308589B2Apr 12, 2016

Drill

SUMITOMO ELECTRIC INDUSTRIES3 citations71