Granted Patent
Utility
US 5,824,633 · App. 08/732,422
Heterogeneous surfactant granules
Inventors:
Ditmar Kischkel, Karl Schmid, Andreas Syldath, Thomas Krohnen
Patented Case
View Patent ↗
Granted: Oct 20, 1998
Filed: Jan 31, 1997
Inventors
Ditmar Kischkel
Karl Schmid
Andreas Syldath
Thomas Krohnen
Assignee (at issue)
Henkel Kommanditgesellschaft auf Aktien
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.