Granted Patent
Utility
US 6,642,305 · App. 09/884,195
Thixotropic amino formaldehyde resin
Inventors:
Richard Gerardus Johannes Maria Van Heugten, Johannes Bernardus Van Der Sanden, Cornelis Adrianus Maria Vijverberg
Patented Case
View Patent ↗
Granted: Nov 4, 2003
Filed: Jun 19, 2001
Inventors
Richard Gerardus Johannes Maria Van Heugten
Johannes Bernardus Van Der Sanden
Cornelis Adrianus Maria Vijverberg
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.