Granted Patent
Utility
US 4,971,794 · App. 06/933,358
Production of antibodies using a mixture of strains of E. coli collectively expressing type I pili, CFA I pili, CFA II pili and K88 pili
Inventors:
Margaret A. Linggood, Philip Porter, Jonathan Robert Powell
Patented Case
View Patent ↗
Granted: Nov 20, 1990
Filed: Nov 19, 1986
Inventors
Margaret A. Linggood
Philip Porter
Jonathan Robert Powell
Assignee (at issue)
Unilever Patent Holdings B.V.
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.