Granted Patent
Utility
US 5,032,457 · App. 07/410,608
Paucilamellar lipid vesicles using charge-localized, single chain, nonphospholipid surfactants
Inventor:
Donald F. H. Wallach
Patented Case
View Patent ↗
Granted: Jul 16, 1991
Filed: Sep 21, 1989
Inventor
Donald F. H. Wallach
Assignee (at issue)
Micro Vesicular 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.