Granted Patent
Utility
US 5,643,246 · App. 08/393,971
Electromagnetically triggered, responsive gel based drug delivery device
Inventors:
Steven B. Leeb, E. C. Lupton, Xiaohong Yu, George Hovorka
Patented Case
View Patent ↗
Granted: Jul 1, 1997
Filed: Feb 24, 1995
Inventors
Steven B. Leeb
E. C. Lupton
Xiaohong Yu
George Hovorka
Assignee (at issue)
Gel 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.