Granted Patent
Utility
US 6,420,508 · App. 09/590,340
Light-fast polyisocyanates having good solubility in non-polar solvents
Inventors:
Karsten Danielmeier, Lutz Schmalstieg, Hans-Josef Laas, Harald Mertes, Reinhard Jahn
Patented Case
View Patent ↗
Granted: Jul 16, 2002
Filed: Jun 8, 2000
Inventors
Karsten Danielmeier
Lutz Schmalstieg
Hans-Josef Laas
Harald Mertes
Reinhard Jahn
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.