Granted Patent
Utility
US 6,231,818 · App. 09/456,937
Amorphous non-intumescent inorganic fiber mat for low temperature exhaust gas treatment devices
Inventor:
John D. TenEyck
Patented Case
View Patent ↗
Granted: May 15, 2001
Filed: Dec 7, 1999
Inventor
John D. TenEyck
Assignee (at issue)
Unifrax LLC
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.