Granted Patent
Utility
US 6,569,951 · App. 09/967,311
Elastic-thermoplastic graft polymers prepared by multi-stage free radical polymerization
Inventors:
Herbert Eichenauer, Hans-Erich Gasche, Ulrich Jansen
Patented Case
View Patent ↗
Granted: May 27, 2003
Filed: Sep 28, 2001
Inventors
Herbert Eichenauer
Hans-Erich Gasche
Ulrich Jansen
Assignee (at issue)
Bayer Aktiengesellschaft
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.