Granted Patent
Utility
US 5,118,512 · App. 07/468,709
Process for cryopreserving biological materials and materials prepared thereby
Inventors:
Robert K. O'Leary, Ann Prewett
Patented Case
View Patent ↗
Granted: Jun 2, 1992
Filed: Jan 23, 1990
Inventors
Robert K. O'Leary
Ann Prewett
Assignee (at issue)
Osteotech, Inc. (a Delaware Corp.)
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.