Granted Patent
Utility
US 4,497,897 · App. 06/448,374
Liquid proteinase concentrate and method for preparation
Inventors:
Jens H. Eilertsen, Arne D. Fog, Keith Gibson
Patented Case
View Patent ↗
Granted: Feb 5, 1985
Filed: Dec 9, 1982
Inventors
Jens H. Eilertsen
Arne D. Fog
Keith Gibson
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.