Granted Patent
Utility
US 6,261,457 · App. 09/439,083
Method and product for cleaning hollow fiber material and filter
Inventors:
Randal M. Wenthold, Christopher Gary Rasset, Scott Blair Wright
Patented Case
View Patent ↗
Granted: Jul 17, 2001
Filed: Nov 12, 1999
Inventors
Randal M. Wenthold
Christopher Gary Rasset
Scott Blair Wright
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.