Granted Patent
Utility
US 6,278,035 · App. 09/527,175
Process for C2 recovery
Inventors:
Ronald D. Key, William G. Brown
Patented Case
View Patent ↗
Granted: Aug 21, 2001
Filed: Mar 17, 2000
Inventors
Ronald D. Key
William G. Brown
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.