Granted Patent
Utility
US 5,983,664 · App. 09/054,802
Hydrocarbon gas processing
Inventors:
Roy E. Campbell, John D. Wilkinson, Hank M. Hudson, Michael C. Pierce
Patented Case
View Patent ↗
Granted: Nov 16, 1999
Filed: Apr 3, 1998
Inventors
Roy E. Campbell
John D. Wilkinson
Hank M. Hudson
Michael C. Pierce
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.