Granted Patent
Utility
US 5,223,395 · App. 07/278,605
Immunometric assays for tumor necrosis factor-alpha and methods for preventing the loss of biological activity of tumor necrosis factor-alpha in biological samples
Inventor:
Eva J. Gero
Patented Case
View Patent ↗
Granted: Jun 29, 1993
Filed: Dec 1, 1988
Inventor
Eva J. Gero
Assignee (at issue)
Centocor, 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.