Granted Patent
Utility
US 4,971,915 · App. 07/050,755
Simulated distillation of petroleum residues by capillary SFC
Inventors:
Herbert E. Schwartz, Robert G. Brownlee
Patented Case
View Patent ↗
Granted: Nov 20, 1990
Filed: May 15, 1987
Inventors
Herbert E. Schwartz
Robert G. Brownlee
Assignee (at issue)
APPLIED BIOSYSTEMS, LLC
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.