Granted Patent
Utility
US 6,749,749 · App. 10/180,350
Separation system, components of a separation system and methods of making and using them
Inventors:
Shaofeng Xie, Robert W. Allington
Patented Case
View Patent ↗
Granted: Jun 15, 2004
Filed: Jun 26, 2002
Inventors
Shaofeng Xie
Robert W. Allington
Assignee (at issue)
Isco, 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.