Granted Patent
Utility
US 5,723,601 · App. 08/302,839
Super porous polysaccharide gels
Inventor:
Per-Olof Larsson
Patented Case
View Patent ↗
Granted: Mar 3, 1998
Filed: Sep 16, 1994
Inventor
Per-Olof Larsson
Assignee (at issue)
Pharmacia Biotech AB
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.