Inventor
WENDEL STEPHAN
DE5 patents
⚠️ This page may combine multiple inventors who share the name “WENDEL STEPHAN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
EVONIK OPERATIONS GMBH
3 patentsUS10988566B2Apr 27, 2021
Delayed action gelling catalyst compositions and methods for making polyurethane polymers
EVONIK OPERATIONS GMBH1 citations61
US12595332B2Apr 7, 2026
Preparation of polyurethane systems
EVONIK OPERATIONS GMBH0 citations59
US10815351B2Oct 27, 2020
Polyurethane foam production process, pre-mix, formulation, and product
EVONIK OPERATIONS GMBH1 citations59
BAYER AG
2 patentsUS5367000ANov 22, 1994
Process for the production of rigid foams containing urethane and isocyanurate groups
BAYER AG5 citations61
US5268509ADec 7, 1993
Process for the preparation of an iron catalyst and a process for the preparation of primary amines by the hydrogenation of nitriles using said iron catalyst
BAYER AG2 citations57