Granted Patent
Utility
US 5,552,309 · App. 08/315,974
Use of polyols for improving the introduction of genetic material into cells
Inventor:
Keith L. March
Patented Case
View Patent ↗
Granted: Sep 3, 1996
Filed: Sep 30, 1994
Inventor
Keith L. March
Assignee (at issue)
THE TRUSTEES OF INDIANA UNIVERSITY
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.