Inventor
HIRAKAWA NOBUHITO
JP4 patents
Patents
4 patentsUS5516159AMay 14, 1996
Quartz pipe joint
NIPPON PILLAR PACKING32 citations91
US6485062B2Nov 26, 2002
Multi-channel rotary joint
NIPPON PILLAR PACKING33 citations88
US6550119B2Apr 22, 2003
Inner ring press-insertion jig for a pipe member made of resin
NIPPON PILLAR PACKING20 citations82
US6079581AJun 27, 2000
Fuel feed port sealing apparatus
NIPPON PILLAR PACKING17 citations78