Granted Patent
Utility
US 6,776,820 · App. 09/900,881
Integral hollow fiber membrane gas dryer and filtration device
Inventors:
Benjamin Bikson, Scott Andrew Bartholomew, Salvatore Giglia, Bradley Quinn Johnson
Patented Case
View Patent ↗
Granted: Aug 17, 2004
Filed: Jul 10, 2001
Inventors
Benjamin Bikson
Scott Andrew Bartholomew
Salvatore Giglia
Bradley Quinn Johnson
Assignee (at issue)
Praxair Technology, 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.