Inventor
HIGAI KAZUHIKO
JP21 patents
⚠️ This page may combine multiple inventors who share the name “HIGAI KAZUHIKO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
JFE STEEL CORP
14 patentsUS10160031B2Dec 25, 2018
Method of forming a closed cross-sectional structure
JFE STEEL CORP5 citations73
US9862017B2Jan 9, 2018
Method and apparatus that forms a closed cross-sectional structure
JFE STEEL CORP3 citations73
US9333549B2May 10, 2016
Press-forming mold designing method and press-forming mold
JFE STEEL CORP5 citations73
US9327327B2May 3, 2016
Method of manufacturing pipe with different diameter along a longitudinal direction and die for forming
JFE STEEL CORP5 citations71
US11975762B2May 7, 2024
Crashworthiness energy absorption parts for automotive
JFE STEEL CORP2 citations69
US11975764B2May 7, 2024
Automotive frame part
JFE STEEL CORP1 citations61
US10828683B2Nov 10, 2020
Apparatus that manufactures closed-structure part
JFE STEEL CORP0 citations52
US12571122B2Mar 10, 2026
Automotive crashworthiness energy absorption part, and method for manufacturing automotive crashworthiness energy absorption part
JFE STEEL CORP0 citations51
US12054113B2Aug 6, 2024
Automotive crashworthiness energy absorption part and method for manufacturing the same
JFE STEEL CORP0 citations51
US11993311B2May 28, 2024
Automotive crashworthiness energy absorptive part and method for manufacturing same
JFE STEEL CORP0 citations51
US11235812B2Feb 1, 2022
Automotive frame part
JFE STEEL CORP0 citations51
US11235645B2Feb 1, 2022
Stiffening structure and stiffening method for automotive door panel part
JFE STEEL CORP0 citations51
US12358563B2Jul 15, 2025
Automotive crashworthiness energy absorptive part
JFE STEEL CORP0 citations48
US9630238B2Apr 25, 2017
Method and apparatus that forms a closed cross-sectional structure
JFE STEEL CORP0 citations41
HIGAI KAZUHIKO
5 patentsUS8844581B2Sep 30, 2014
Closed structure parts, method and press forming apparatus for manufacturing the same
HIGAI KAZUHIKO11 citations82
US10160018B2Dec 25, 2018
Method of manufacturing closed-structure part and apparatus for the same
HIGAI KAZUHIKO5 citations72
US9162272B2Oct 20, 2015
Closed structure parts, method and press forming apparatus for manufacturing the same
HIGAI KAZUHIKO6 citations71
US9009970B2Apr 21, 2015
Curvilineal closed structure parts and method for manufacturing the same
HIGAI KAZUHIKO3 citations60
US9669444B2Jun 6, 2017
Method of manufacturing curvilineal closed structure parts without flange and apparatus for the same
HIGAI KAZUHIKO0 citations40