Granted Patent
Utility
US 6,653,420 · App. 09/755,443
Porous hydrogels
Inventors:
Angelika Domschke, Vimala Francis
Patented Case
View Patent ↗
Granted: Nov 25, 2003
Filed: Jan 5, 2001
Inventors
Angelika Domschke
Vimala Francis
Assignee (at issue)
NOVARTIS AG
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.