Granted Patent
Utility
US 6,608,076 · App. 10/147,168
Camptothecin derivatives and polymeric conjugates thereof
Inventors:
Richard B. Greenwald, Hong Zhao
Patented Case
View Patent ↗
Granted: Aug 19, 2003
Filed: May 16, 2002
Inventors
Richard B. Greenwald
Hong Zhao
Assignee (at issue)
Enzon, Inc.
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.