Granted Patent
Utility
US 4,954,444 · App. 07/134,028
Enzyme immobilization and bioaffinity separations with perfluorocarbon polymer-based supports
Inventors:
John W. D. Eveleigh, Robert K. Kobos
Patented Case
View Patent ↗
Granted: Sep 4, 1990
Filed: Dec 17, 1987
Inventors
John W. D. Eveleigh
Robert K. Kobos
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.