Granted Patent
Utility
US 6,720,174 · App. 09/488,265
Phytases
Inventor:
Martin Lehmann
Patented Case
View Patent ↗
Granted: Apr 13, 2004
Filed: Jan 20, 2000
Inventor
Martin Lehmann
Assignees (at issue)
Novozymes A/S
Roche Vitamins 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.