Granted Patent
Utility
US 5,997,580 · App. 08/852,004
Cement restrictor including shape memory material
Inventors:
Brooke W. Mastrorio, Pierre S. Ostiguy
Patented Case
View Patent ↗
Granted: Dec 7, 1999
Filed: May 6, 1997
Inventors
Brooke W. Mastrorio
Pierre S. Ostiguy
Assignee (at issue)
Johnson & Johnson Professional, 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.