Granted Patent
Utility
US 6,174,704 · App. 09/220,088
Method for recovery of proteins prepared by recombinant DNA procedures
Inventors:
Ruiyin Chu, A. Krishna Mallia
Patented Case
View Patent ↗
Granted: Jan 16, 2001
Filed: Dec 23, 1998
Inventors
Ruiyin Chu
A. Krishna Mallia
Assignee (at issue)
Pierce Chemical Company
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.