Granted Patent
Utility
US 6,793,880 · App. 09/905,034
Apparatus and method for monitoring biofilm cleaning efficacy
Inventor:
Roland Kippenhan
Patented Case
View Patent ↗
Granted: Sep 21, 2004
Filed: Jul 13, 2001
Inventor
Roland Kippenhan
Assignee (at issue)
MINNTECH CORPORATION
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.