Granted Patent
Utility
US 6,755,970 · App. 10/018,923
Back-flushable spiral wound filter and methods of making and using same
Inventors:
Peter Knappe, Seymour S. Kremen, Hans A. Thomason, Matthew Tanner
Patented Case
View Patent ↗
Granted: Jun 29, 2004
Filed: Mar 20, 2002
Inventors
Peter Knappe
Seymour S. Kremen
Hans A. Thomason
Matthew Tanner
Assignee (at issue)
TriSept 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.