Granted Patent
Utility
US 5,380,790 · App. 08/118,903
Process for the preparation of acrylic polymers for pharmaceutical coatings
Inventors:
Robert G. Chen, Stephen H. Wu
Patented Case
View Patent ↗
Granted: Jan 10, 1995
Filed: Sep 9, 1993
Inventors
Robert G. Chen
Stephen H. Wu
Assignee (at issue)
Eastman Chemical Company
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.