Inventor

GROTJOHANN DIRK

DE2 patents

⚠️ This page may combine multiple inventors who share the name “GROTJOHANN DIRK”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

BAYER HEALTHCARE AG

1 patent

US7351823B2Apr 1, 2008

Preparation process

BAYER HEALTHCARE AG54 citations94

BAYER AG

1 patent

US6649798B2Nov 18, 2003

Method for production of diaminodiphenylmethanes

BAYER AG15 citations82