Inventor

UMEZAWA OSAMU

JP3 patents

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

NAT RES INST METALS

2 patents

US6221178B1Apr 24, 2001

Ultra-fine grain steel and method for producing it

NAT RES INST METALS18 citations89

US6572716B2Jun 3, 2003

Fine ferrite-based structure steel production method

NAT RES INST METALS3 citations60

JP NAT RES INST FOR METALS

1 patent

US6464807B1Oct 15, 2002

Production method of ultra fine grain steel

JP NAT RES INST FOR METALS3 citations59