Inventor

TSUNEISHI Osamu

JP3 patents

Patents

3 patents

US9790822B2Oct 17, 2017

Hollow poppet valve

NITTAN VALVA7 citations80

US9611953B2Apr 4, 2017

Hollow poppet valve

NITTAN VALVA4 citations65

US9920663B2Mar 20, 2018

Hollow poppet valve

NITTAN VALVA5 citations63