Granted Patent
Utility
US 6,667,371 · App. 10/295,766
Block copolymers based on poly(ortho esters) containing amine groups
Inventors:
Steven Y. Ng, Jorge Heller
Patented Case
View Patent ↗
Granted: Dec 23, 2003
Filed: Nov 14, 2002
Inventors
Steven Y. Ng
Jorge Heller
Assignee (at issue)
A.P. PHARMA, 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.