Granted Patent
Utility
US 6,375,972 · App. 09/558,207
Sustained release drug delivery devices, methods of use, and methods of manufacturing thereof
Inventors:
Hong Guo, Paul Ashton
Patented Case
View Patent ↗
Granted: Apr 23, 2002
Filed: Apr 26, 2000
Inventors
Hong Guo
Paul Ashton
Assignee (at issue)
Control Delivery Systems, 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.