Granted Patent
Utility
US 4,973,417 · App. 07/144,175
Enteric coated detergent enzymes
Inventor:
Per Falholt
Patented Case
View Patent ↗
Granted: Nov 27, 1990
Filed: Jan 15, 1988
Inventor
Per Falholt
Assignee (at issue)
Novo Industri A/S
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.