Granted Patent
Utility
US 5,858,721 · App. 08/978,520
Three-dimensional cell and tissue culture system
Inventors:
Gail K. Naughton, Brian A. Naughton
Patented Case
View Patent ↗
Granted: Jan 12, 1999
Filed: Nov 25, 1997
Inventors
Gail K. Naughton
Brian A. Naughton
Assignee (at issue)
Advanced Tissue Sciences, 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.