Inventor

MIIDA HIROSHI

JP3 patents

Patents

3 patents

US7052019B2May 30, 2006

Piston ring and method of manufacturing the same

RIKEN KK26 citations86

US4542907ASep 24, 1985

Corrugated expander for piston ring assembly

RIKEN KK16 citations70

US5779219AJul 14, 1998

Solenoid valve

RIKEN KK1 citations41