Granted Patent
Utility
US 6,107,484 · App. 09/320,366
Process for preparing polyisocyanates containing iminooxadiazinedione groups
Inventors:
Frank Richter, Stefan Groth, Eberhard Stelter, Wilfried Litz
Patented Case
View Patent ↗
Granted: Aug 22, 2000
Filed: May 25, 1999
Inventors
Frank Richter
Stefan Groth
Eberhard Stelter
Wilfried Litz
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.