Granted Patent
Utility
US 5,902,888 · App. 08/970,139
Synthesis of 6.alpha.-functionalized estriol haptens and protein conjugates thereof
Inventors:
James Vincent Freeman, Gary M. Johnson
Patented Case
View Patent ↗
Granted: May 11, 1999
Filed: Nov 14, 1997
Inventors
James Vincent Freeman
Gary M. Johnson
Assignee (at issue)
Bayer Aktiengesellschaft
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.