Inventor

NAGAI KOTOBU

JP13 patents

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

KANAI TAKAHIKO

3 patents

US10189112B2Jan 29, 2019

Welding equipment for metallic materials and method for welding metallic materials

KANAI TAKAHIKO0 citations46

US9498840B2Nov 22, 2016

Welding structural part and welding method of the same

KANAI TAKAHIKO0 citations46

US9079266B2Jul 14, 2015

Welding equipment for metallic materials and method for welding metallic materials

KANAI TAKAHIKO1 citations46

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

2 patents

US6332905B1Dec 25, 2001

High-strength metal solidified material and acid steel and manufacturing methods thereof

JP NAT RES INST FOR METALS7 citations67

US6464807B1Oct 15, 2002

Production method of ultra fine grain steel

JP NAT RES INST FOR METALS3 citations59

NAT INST FOR MATERIALS SCIENCE

2 patents

US7647804B2Jan 19, 2010

Large strain-introducing working method and caliber rolling device

NAT INST FOR MATERIALS SCIENCE3 citations58

US7727343B2Jun 1, 2010

Controlled warm-rolling method

NAT INST FOR MATERIALS SCIENCE0 citations40

JP NATIONAL RESEARCH INST FOR

1 patent

US6129791AOct 10, 2000

Oxides dispersion steel and making process thereof

JP NATIONAL RESEARCH INST FOR19 citations88

NAKANISHI EIZABUROU

1 patent

US8932416B2Jan 13, 2015

High-strength and high-ductility die-quenched parts and method of manufacturing the same

NAKANISHI EIZABUROU11 citations76

TORIZUKA SHIRO

1 patent

US8070888B2Dec 6, 2011

High strength formed article comprising hyperfine grain structure steel and manufacturing method of the same

TORIZUKA SHIRO5 citations52

JP NAT RES INST OF METALS

1 patent

US6287397B1Sep 11, 2001

High strength phosphorus-containing steel and method for producing the same

JP NAT RES INST OF METALS0 citations46