Granted Patent
Utility
US 5,492,813 · App. 08/146,673
Muteins of .beta.-galactosidase fragments having increased activity
Inventors:
Scott Eisenbeis, Sophie J. Boguslawski, Mark Krevolin, David Ledden
Patented Case
View Patent ↗
Granted: Feb 20, 1996
Filed: Nov 1, 1993
Inventors
Scott Eisenbeis
Sophie J. Boguslawski
Mark Krevolin
David Ledden
Assignee (at issue)
Boehringer Mannheim GmbH
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.