Inventor
HIRATA HIROYUKI
JP43 patents
⚠️ This page may combine multiple inventors who share the name “HIRATA HIROYUKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NIPPON STEEL CORP
7 patentsUS11339462B2May 24, 2022
Austenitic stainless steel weld metal and welded structure
NIPPON STEEL CORP1 citations60
US11339461B2May 24, 2022
Austenitic stainless steel
NIPPON STEEL CORP0 citations60
US11021778B2Jun 1, 2021
Austenitic stainless steel weld metal and welded structure
NIPPON STEEL CORP0 citations60
US11834731B2Dec 5, 2023
Method of producing ferritic heat-resistant steel welded joint
NIPPON STEEL CORP0 citations59
US11866814B2Jan 9, 2024
Austenitic stainless steel
NIPPON STEEL CORP0 citations52
US12577646B2Mar 17, 2026
Composite tube and welded joint
NIPPON STEEL CORP0 citations50
US12054818B2Aug 6, 2024
Duplex stainless steel tube and welded joint
NIPPON STEEL CORP0 citations48
NIPPON STEEL & SUMITOMO METAL CORP
6 patentsUS10519533B2Dec 31, 2019
High Cr-based austenitic stainless steel
NIPPON STEEL & SUMITOMO METAL CORP2 citations71
US11090755B2Aug 17, 2021
Welding material for ferritic heat-resistant steel, welded joint for ferritic heat-resistant steel, and method for producing welded joint for ferritic heat-resistant steel
NIPPON STEEL & SUMITOMO METAL CORP2 citations69
US10378091B2Aug 13, 2019
Welded joint
NIPPON STEEL & SUMITOMO METAL CORP1 citations60
US10260125B2Apr 16, 2019
High-strength austenitic stainless steel for high-pressure hydrogen gas
NIPPON STEEL & SUMITOMO METAL CORP0 citations51
US10662497B2May 26, 2020
Austenitic stainless steel and method of manufacturing the same
NIPPON STEEL & SUMITOMO METAL CORP0 citations41
US10556298B2Feb 11, 2020
Welded joint and method of manufacturing welded joint
NIPPON STEEL & SUMITOMO METAL CORP0 citations41
HITACHI MAXELL
5 patentsUS7419315B2Sep 2, 2008
Lens device
HITACHI MAXELL82 citations98
US6127017AOct 3, 2000
Substrate for information recording disk, mold and stamper for injection molding substrate, and method for making stamper, and information recording disk
HITACHI MAXELL46 citations95
US7457052B2Nov 25, 2008
Light shield sheet, optical apparatus, and method of manufacturing light shield sheet
HITACHI MAXELL35 citations92
US6333089B1Dec 25, 2001
Substrate for information recording disk, mold and stamper for injection molding substrate, and method for making stamper, and information recording disk
HITACHI MAXELL25 citations91
US6319580B1Nov 20, 2001
Recording disk and producing method therefor
HITACHI MAXELL9 citations73
SUMITOMO METAL IND
5 patentsUS6379611B1Apr 30, 2002
High strength, low alloy, heat resistant steel
SUMITOMO METAL IND22 citations90
US6024276AFeb 15, 2000
Method for bonding dual-phase stainless steel
SUMITOMO METAL IND38 citations89
US6528012B2Mar 4, 2003
Welded structure made of low thermal expansion coefficient alloy and welding material therefore
SUMITOMO METAL IND14 citations78
US6712913B2Mar 30, 2004
Ferritic heat-resisting steel
SUMITOMO METAL IND8 citations74
US7238434B2Jul 3, 2007
Welded structure having improved resistance to stress corrosion cracking
SUMITOMO METAL IND2 citations62
KAWASAKI HEAVY IND LTD
5 patentsUS9482043B2Nov 1, 2016
Hinged door
KAWASAKI HEAVY IND LTD2 citations62
US9302684B2Apr 5, 2016
Railcar door apparatus and railcar
KAWASAKI HEAVY IND LTD2 citations62
US10011286B2Jul 3, 2018
Front door for railcar
KAWASAKI HEAVY IND LTD0 citations48
US10071754B2Sep 11, 2018
Railcar with buffer
KAWASAKI HEAVY IND LTD0 citations45
US9944300B2Apr 17, 2018
Railcar with end cap
KAWASAKI HEAVY IND LTD0 citations45
HIRATA HIROYUKI
4 patentsUS8313591B2Nov 20, 2012
Austenitic heat resistant alloy
HIRATA HIROYUKI13 citations82
US8526129B2Sep 3, 2013
Lens unit, camera module and manufacturing method of lens unit
HIRATA HIROYUKI18 citations81
US9211601B2Dec 15, 2015
Austenitic steel welded joint
HIRATA HIROYUKI3 citations61
US8808473B2Aug 19, 2014
Austenitic heat resistant alloy
HIRATA HIROYUKI2 citations61