Granted Patent
Utility
US 6,416,725 · App. 09/424,118
Removal of contaminants from gas streams in rayon production
Inventors:
Edward F. Spink, Christopher Mueller
Patented Case
View Patent ↗
Granted: Jul 9, 2002
Filed: Feb 22, 2000
Inventors
Edward F. Spink
Christopher Mueller
Assignee (at issue)
Turbotak Technologies 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.