Granted Patent
Utility
US 6,777,402 · App. 10/151,764
Water-soluble porphyrin derivatives for photodynamic therapy, their use and manufacture
Inventors:
Nikolay Nifantiev, Dmitri V. Yashunsky
Patented Case
View Patent ↗
Granted: Aug 17, 2004
Filed: May 20, 2002
Inventors
Nikolay Nifantiev
Dmitri V. Yashunsky
Assignee (at issue)
CeramOptec Industries 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.