Granted Patent
Utility
US 4,948,874 · App. 07/311,446
Purified protein G from streptococcal bacteria
Inventors:
Goran Kronvall, Lars Bjorck
Patented Case
View Patent ↗
Granted: Aug 14, 1990
Filed: Feb 15, 1989
Inventors
Goran Kronvall
Lars Bjorck
Assignee (at issue)
Pharmacia AB
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.