Granted Patent
Utility
US 5,082,548 · App. 07/577,421
Isoelectric focusing apparatus
Inventors:
Daniel M. Faupel, Pier Giorgio Righetti
Patented Case
View Patent ↗
Granted: Jan 21, 1992
Filed: Sep 4, 1990
Inventors
Daniel M. Faupel
Pier Giorgio Righetti
Assignee (at issue)
Ciba-Geigy
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.