Granted Patent
Utility
US 6,564,813 · App. 09/463,376
Use of solutions containing enzymes for cleaning fermentation or storage tanks
Inventors:
Marion Lengling, Harald Kluschanzoff
Patented Case
View Patent ↗
Granted: May 20, 2003
Filed: Apr 7, 2000
Inventors
Marion Lengling
Harald Kluschanzoff
Assignee (at issue)
Ecolab GmbH & Co. OHG
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.