Granted Patent
Utility
US 5,326,552 · App. 07/991,909
Formulations for nanoparticulate x-ray blood pool contrast agents using high molecular weight nonionic surfactants
Inventors:
George C. Na, Natarajan Rajagopalan
Patented Case
View Patent ↗
Granted: Jul 5, 1994
Filed: Dec 17, 1992
Inventors
George C. Na
Natarajan Rajagopalan
Assignee (at issue)
Sterling Winthrop 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.