Granted Patent
Utility
US 4,359,592 · App. 06/246,534
Multi-stage, adsorption process for separating organic liquids from water
Inventors:
James C. Chao, Cheng Yih Jenq
Patented Case
View Patent ↗
Granted: Nov 16, 1982
Filed: Mar 23, 1981
Inventors
James C. Chao
Cheng Yih Jenq
Assignee (at issue)
Hydrocarbon Research, 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.