Granted Patent
Utility
US 6,620,937 · App. 09/815,459
Intermediates in the synthesis of camptothecin and related compounds and synthesis thereof
Inventors:
Dennis P. Curran, Hubert Josien, Sung-Bo Ko
Patented Case
View Patent ↗
Granted: Sep 16, 2003
Filed: Mar 23, 2001
Inventors
Dennis P. Curran
Hubert Josien
Sung-Bo Ko
Assignee (at issue)
UNIVERSITY OF PITTSBURGH
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.