Granted Patent
Utility
US 5,766,288 · App. 08/505,278
Multilayered deep-bed filter material
Inventors:
Reiner Thiele, Henrik Badt
Patented Case
View Patent ↗
Granted: Jun 16, 1998
Filed: Oct 6, 1995
Inventors
Reiner Thiele
Henrik Badt
Assignees (at issue)
Corovin GmbH
Kalthoff Luftfilter und Filtermedien GmbH
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.