Granted Patent
Utility
US 6,326,019 · App. 09/625,481
Grafts made from amniotic membrane; methods of separating, preserving, and using such grafts in surgeries
Inventor:
Scheffer Tseng
Patented Case
View Patent ↗
Granted: Dec 4, 2001
Filed: Jul 25, 2000
Inventor
Scheffer Tseng
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.