Granted Patent
Utility
US 5,205,987 · App. 07/662,255
Off-line supercritical fluid extraction collection system
Inventors:
Mehdi Ashraf-Khorassani, Gregory P. Shogan, Raymond K. Houck
Patented Case
View Patent ↗
Granted: Apr 27, 1993
Filed: Feb 28, 1991
Inventors
Mehdi Ashraf-Khorassani
Gregory P. Shogan
Raymond K. Houck
Assignee (at issue)
Suprex 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.