Granted Patent
Utility
US 6,599,977 · App. 09/857,004
Process for the preparation of an aqueous dispersion of an anionic polyurethane free of volatile tertiary amines
Inventors:
Laurentius Cornelius Josephus Hesselmans, Josep Oller Chirivella
Patented Case
View Patent ↗
Granted: Jul 29, 2003
Filed: Aug 28, 2001
Inventors
Laurentius Cornelius Josephus Hesselmans
Josep Oller Chirivella
Assignee (at issue)
Stahl International B.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.