Inventor
HARAYAMA AKIRA
JP8 patents
⚠️ This page may combine multiple inventors who share the name “HARAYAMA AKIRA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TEIKOKU PISTON RING CO LTD
6 patentsUS6054225AApr 25, 2000
Composite chromium plating film and sliding member covered thereof
TEIKOKU PISTON RING CO LTD19 citations91
US5469616ANov 28, 1995
Method of manufacturing a side rail of a combined oil ring
TEIKOKU PISTON RING CO LTD20 citations88
US5295696AMar 22, 1994
Combined oil ring
TEIKOKU PISTON RING CO LTD41 citations86
US6013380AJan 11, 2000
Composite chromium plating film and sliding member covered thereof
TEIKOKU PISTON RING CO LTD14 citations72
US4062741ADec 13, 1977
Method for maintaining an electrode and an article plated or to be plated immersed in an electrolytic chromium-plating bath in a normal condition
TEIKOKU PISTON RING CO LTD8 citations72
US5945226AAug 31, 1999
Chromium alloy plating film, plating method thereof and member covered with said film
TEIKOKU PISTON RING CO LTD2 citations53