Granted Patent
Utility
US 5,543,099 · App. 08/314,727
Process to manufacture micronized nifedipine granules for sustained release medicaments
Inventors:
Guohua Zhang, Prasad Pinnamaraju
Patented Case
View Patent ↗
Granted: Aug 6, 1996
Filed: Sep 29, 1994
Inventors
Guohua Zhang
Prasad Pinnamaraju
Assignee (at issue)
Hallmark Pharmaceuticals, 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.