Granted Patent
Utility
US 6,368,648 · App. 09/352,239
Adsorbent filtration system for treating used cooking oil or fat in frying operations
Inventors:
Bryan L. Bertram, Chris Abrams, Jeffrey V. Kauffman
Patented Case
View Patent ↗
Granted: Apr 9, 2002
Filed: Apr 13, 2001
Inventors
Bryan L. Bertram
Chris Abrams
Jeffrey V. Kauffman
Assignee (at issue)
The Dallas Group of America, Inc.
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.