Inventor

HIROMATSU HIDENORI

JP4 patents

⚠️ This page may combine multiple inventors who share the name “HIROMATSU HIDENORI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

FUKUZUMI TATSUO

2 patents

US8337642B2Dec 25, 2012

Spring steel with improved hardenability and pitting resistance

FUKUZUMI TATSUO0 citations44

US8197614B2Jun 12, 2012

Spring steel with improved hardenability and pitting resistance

FUKUZUMI TATSUO0 citations44

MITSUBISHI STEEL MURORAN INC

1 patent

US6322747B1Nov 27, 2001

High-strength spring steel

MITSUBISHI STEEL MURORAN INC19 citations84

MITSUBISHI STEEL MFG

1 patent

US7850794B2Dec 14, 2010

Spring steel with improved hardenability and pitting resistance

MITSUBISHI STEEL MFG1 citations60