Inventor

TAKEZAWA YUICHIRO

JP3 patents

Patents

3 patents

US10428943B2Oct 1, 2019

Side rail

KK RIKEN1 citations55

US11333245B2May 17, 2022

Oil control ring and spacer expander

KK RIKEN0 citations53

US11448317B2Sep 20, 2022

Side rail

KK RIKEN0 citations48