Granted Patent
Utility
US 5,881,569 · App. 08/915,065
Hydrocarbon gas processing
Inventors:
Roy E. Campbell, John D. Wilkinson, Hank M. Hudson, Kyle T. Cueller
Patented Case
View Patent ↗
Granted: Mar 16, 1999
Filed: Aug 20, 1997
Inventors
Roy E. Campbell
John D. Wilkinson
Hank M. Hudson
Kyle T. Cueller
Assignee (at issue)
Elcor Corporation
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.