Granted Patent
Utility
US 6,764,603 · App. 09/820,546
Material for extracting hydrophobic components dissolved in water
Inventors:
Frederik Albert Buijtenhuijs, Johanne Josef Pragt, Elwin Schomaker
Patented Case
View Patent ↗
Granted: Jul 20, 2004
Filed: Mar 29, 2001
Inventors
Frederik Albert Buijtenhuijs
Johanne Josef Pragt
Elwin Schomaker
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.