Granted Patent
Utility
US 6,835,700 · App. 10/009,285
Highly concentrated free-flowing pearly lustre concentrates
Inventors:
Claus Nieendick, Karl Schmid, Mirella Nalborczyk
Patented Case
View Patent ↗
Granted: Dec 28, 2004
Filed: Nov 6, 2001
Inventors
Claus Nieendick
Karl Schmid
Mirella Nalborczyk
Assignee (at issue)
Cognis Deutschland GmbH & Co. KG
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.