Granted Patent
Utility
US 6,509,384 · App. 09/840,963
Chemical product and method
Inventors:
Anna Kron, Peter Sjögren, Odd Bjerke
Patented Case
View Patent ↗
Granted: Jan 21, 2003
Filed: Apr 25, 2001
Inventors
Anna Kron
Peter Sjögren
Odd Bjerke
Assignee (at issue)
AKZO NOBEL N.V.
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.