Granted Patent
Utility
US 6,455,488 · App. 09/700,309
Process of making alkyl sulfate granulates
Inventors:
Georg Assmann, Olaf Blochwitz, Andreas Syldath, Ditmar Kischkel
Patented Case
View Patent ↗
Granted: Sep 24, 2002
Filed: Jan 12, 2001
Inventors
Georg Assmann
Olaf Blochwitz
Andreas Syldath
Ditmar Kischkel
Assignee (at issue)
Cognis Deutschland GmbH
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.