Granted Patent
Utility
US 6,405,561 · App. 09/875,308
Gas separation process
Inventors:
Robert A. Mortko, Kevin L. Currence
Patented Case
View Patent ↗
Granted: Jun 18, 2002
Filed: Jun 6, 2001
Inventors
Robert A. Mortko
Kevin L. Currence
Assignee (at issue)
Black & Veatch Pritchard 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.