Inventor
SIEMUND STEPHAN
DE14 patents
⚠️ This page may combine multiple inventors who share the name “SIEMUND STEPHAN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
BASF CORP
9 patentsUS7754171B2Jul 13, 2010
Multilayered catalyst compositions
BASF CORP53 citations97
US9266092B2Feb 23, 2016
Automotive catalyst composites having a two-metal layer
BASF CORP40 citations92
US7879755B2Feb 1, 2011
Catalyst compositions
BASF CORP33 citations92
US11376569B2Jul 5, 2022
Four-way conversion catalyst having improved filter properties
BASF CORP3 citations71
US11185819B2Nov 30, 2021
Monometallic rhodium-containing four-way conversion catalysts for gasoline engine emissions treatment systems
BASF CORP4 citations71
US11181023B2Nov 23, 2021
Four way conversion catalysts for gasoline engine emissions treatment systems
BASF CORP2 citations71
US11865497B2Jan 9, 2024
Monometallic rhodium-containing four-way conversion catalysts for gasoline engine emissions treatment systems
BASF CORP0 citations60
US12005426B2Jun 11, 2024
Three-way conversion catalyst in gasoline-natural gas applications
BASF CORP0 citations48
US11992806B2May 28, 2024
Four-way conversion catalyst having improved filter properties
BASF CORP0 citations47