Granted Patent
Utility
US 5,575,893 · App. 08/404,771
Felt conditioner for deinked recycled newsprint papermaking system
Inventors:
Abdul Q. Khan, Kevin D. Curham, Jeffrey R. Cowart
Patented Case
View Patent ↗
Granted: Nov 19, 1996
Filed: Mar 15, 1995
Inventors
Abdul Q. Khan
Kevin D. Curham
Jeffrey R. Cowart
Assignee (at issue)
Betzdearborn, 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.