Granted Patent
Utility
US 5,891,617 · App. 08/380,099
Cryopreservation of harvested skin and cultured skin or cornea equivalents by slow freezing
Inventors:
Stephen R. Watson, Mehmet Toner
Patented Case
View Patent ↗
Granted: Apr 6, 1999
Filed: Jan 30, 1995
Inventors
Stephen R. Watson
Mehmet Toner
Assignee (at issue)
Organogenesis 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.