Granted Patent
Utility
US 6,471,993 · App. 09/463,709
Three-dimensional polymer matrices
Inventors:
Venkatram R. Shastri, Ivan Martin, Robert S. Langer, Joachim Seidel
Patented Case
View Patent ↗
Granted: Oct 29, 2002
Filed: Jan 28, 2000
Inventors
Venkatram R. Shastri
Ivan Martin
Robert S. Langer
Joachim Seidel
Assignee (at issue)
MASSACHUSETTS INSTITUTE OF TECHNOLOGY
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.