Inventor
GRAPENTIN HANS-JOACHIM
DE5 patents
⚠️ This page may combine multiple inventors who share the name “GRAPENTIN HANS-JOACHIM”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SCHERING AG
3 patentsUS5112513AMay 12, 1992
Solution and process for etching and activating surfaces of a nonconductive substrate
SCHERING AG21 citations77
US4940554AJul 10, 1990
Conditioning agent for the treatment of base materials
SCHERING AG5 citations69
US5019229AMay 28, 1991
Method of controlling epoxy resin etchant ion concentration
SCHERING AG11 citations62