Granted Patent
Utility
US 4,798,795 · App. 07/092,783
Biotinylating agents
Inventor:
Gerald Sigler
Patented Case
View Patent ↗
Granted: Jan 17, 1989
Filed: Sep 3, 1987
Inventor
Gerald Sigler
Assignee (at issue)
Hoechst Celanese Corporation
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.