Granted Patent
Utility
US 6,465,570 · App. 09/614,918
Process for the production of elastomer-modified thermoplastics
Inventors:
Ulrich Liesenfelder, Hans-Jürgen Thiem, Martin Ullrich
Patented Case
View Patent ↗
Granted: Oct 15, 2002
Filed: Jul 12, 2000
Inventors
Ulrich Liesenfelder
Hans-Jürgen Thiem
Martin Ullrich
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.