Hisao Oka

Follow

Person

Osaka-shi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Drill
- Patent number 9,308,589
- Issue date Apr 12, 2016
- Sumitomo Electric Industries, Ltd
- Hisao Oka
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
End mill
- Patent number 8,562,261
- Issue date Oct 22, 2013
- Sumitomo Electric Hardmetal Corp.
- Hisao Oka
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

Information Patent Application
DRILL
- Publication number 20140363249
- Publication date Dec 11, 2014
- Hisao Oka
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
END MILL
- Publication number 20100196108
- Publication date Aug 5, 2010
- SUMITOMO ELECTRIC HARDMETAL CORP.
- Hisao Oka
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR