Granted Patent
Utility
US 6,515,044 · App. 09/786,712
Method for producing highly viscous polyesters
Inventors:
Karsten-Josef Idel, Hans-Jürgen Dietrich, Matthias Müller
Patented Case
View Patent ↗
Granted: Feb 4, 2003
Filed: Apr 9, 2001
Inventors
Karsten-Josef Idel
Hans-Jürgen Dietrich
Matthias Müller
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.