Inventor

UMETSU KYOHEI

JP3 patents

Patents

3 patents

US7766339B2Aug 3, 2010

Seal ring

NOK CORP14 citations89

US7654536B2Feb 2, 2010

Seal ring

NOK CORP7 citations70

US7722051B2May 25, 2010

Seal ring

NOK CORP3 citations59