Granted Patent
Utility
US 6,500,548 · App. 09/790,496
Transparent or pigmented powder coating materials with crosslinkers comprising hydroxyalkylamides and blocked nonaromatic polyisocyanates
Inventor:
Andreas Wenning
Patented Case
View Patent ↗
Granted: Dec 31, 2002
Filed: Feb 23, 2001
Inventor
Andreas Wenning
Assignee (at issue)
Degussa AG
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.