Granted Patent
Utility
US 5,798,234 · App. 08/831,753
Method for the directed modification of enzymes, modified enzymes and their use
Inventors:
Paul C. Engel, David Rice
Patented Case
View Patent ↗
Granted: Aug 25, 1998
Filed: Apr 1, 1997
Inventors
Paul C. Engel
David Rice
Assignee (at issue)
Degussa AG
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.