Granted Patent
Utility
US 4,900,677 · App. 06/911,808
Process for rapid isolation of high molecular weight DNA
Inventor:
Peter Hewitt
Patented Case
View Patent ↗
Granted: Feb 13, 1990
Filed: Sep 26, 1986
Inventor
Peter Hewitt
Assignee (at issue)
E.I. DU PONT DE NEMOURS AND COMPANY
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.