Granted Patent
Utility
US 6,699,962 · App. 10/146,320
Process and device for extracting polyamide
Inventors:
Heinrich Haupt, Dieter Göbbels, Konrad Triebeneck, Andreas Gittinger
Patented Case
View Patent ↗
Granted: Mar 2, 2004
Filed: May 15, 2002
Inventors
Heinrich Haupt
Dieter Göbbels
Konrad Triebeneck
Andreas Gittinger
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.