Granted Patent
Utility
US 6,217,545 · App. 09/246,544
Filter with varying density which is responsive to fluid flow
Inventor:
Ioakim Haldopoulos
Patented Case
View Patent ↗
Granted: Apr 17, 2001
Filed: Feb 8, 1999
Inventor
Ioakim Haldopoulos
Assignee (at issue)
Porex Technologies 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.