Granted Patent
Utility
US 4,375,387 · App. 06/257,764
Apparatus for separating organic liquid solutes from their solvent mixtures
Inventors:
Richard P. deFilippi, J. Edward Vivian
Patented Case
View Patent ↗
Granted: Mar 1, 1983
Filed: Apr 27, 1981
Inventors
Richard P. deFilippi
J. Edward Vivian
Assignee (at issue)
Critical Fluid Systems, 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.