Inventor
KEFFERSTEIN RONALD
FR19 patents
⚠️ This page may combine multiple inventors who share the name “KEFFERSTEIN RONALD”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ARCELORMITTAL
10 patentsUS10590507B2Mar 17, 2020
Coated steel strips, coated stamped products and methods
ARCELORMITTAL7 citations92
US10550447B2Feb 4, 2020
Coated steel strips, coated stamped products and methods
ARCELORMITTAL3 citations84
US11326227B2May 10, 2022
Coated steel strips, coated stamped products and methods
ARCELORMITTAL1 citations73
US10961602B2Mar 30, 2021
Coated steel strips, coated stamped products and methods
ARCELORMITTAL1 citations73
US10597747B2Mar 24, 2020
Coated steel strips, coated stamped products and methods
ARCELORMITTAL1 citations73
US10577674B2Mar 3, 2020
Coated steel strips, coated stamped products and methods
ARCELORMITTAL1 citations73
US12454737B2Oct 28, 2025
Method of forming a hot stamped coated steel product
ARCELORMITTAL0 citations62
US12012640B2Jun 18, 2024
Method of forming a hot stamped coated steel product
ARCELORMITTAL0 citations62
US11939643B2Mar 26, 2024
Coated steel strips, coated stamped products and methods
ARCELORMITTAL0 citations62
US11041226B2Jun 22, 2021
Coated steel strips, coated stamped products and methods
ARCELORMITTAL0 citations62
SPEHNER DOMINIQUE
3 patentsUS8066829B2Nov 29, 2011
Process for manufacturing stamped products, and stamped products prepared from the same
SPEHNER DOMINIQUE18 citations91
US8733142B2May 27, 2014
Process for manufacturing stamped products, and stamped products prepared from the same
SPEHNER DOMINIQUE8 citations82
US8440323B2May 14, 2013
Coated steel stamped product
SPEHNER DOMINIQUE9 citations82
DRILLET PASCAL
2 patentsUS8307680B2Nov 13, 2012
Coated steel strips, methods of making the same, methods of using the same, stamping blanks prepared from the same, stamped products prepared from the same, and articles of manufacture which contain such a stamped product
DRILLET PASCAL34 citations94
US9708683B2Jul 18, 2017
Coated steel strips, methods of making the same, methods of using the same, stamping blanks prepared from the same, stamped products prepared from the same, and articles of manufacture which contain such a stamped product
DRILLET PASCAL13 citations91
USINOR
2 patentsUS6564604B2May 20, 2003
Process for the manufacture of a part with very high mechanical properties, formed by stamping of a strip of rolled steel sheet and more particularly hot rolled and coated
USINOR89 citations92
US6447590B1Sep 10, 2002
Treatment composition based on pregelatinized starch and process for applying it to a metal, especially steel, surface
USINOR1 citations46
LORRAINE LAMINAGE
2 patentsUS6063447AMay 16, 2000
Process for treating the surface of metal parts
LORRAINE LAMINAGE9 citations70
US6309697B1Oct 30, 2001
Composition for temporarily protecting metal components from corrosion, its processes of preparation and of application, and metal components obtained from this composition
LORRAINE LAMINAGE4 citations58