Granted Patent
Utility
US 5,013,452 · App. 07/445,578
Resolution of emulsions formed in the production of pharmaceuticals
Inventors:
Thomas J. Bellos, Richard D. Keating
Patented Case
View Patent ↗
Granted: May 7, 1991
Filed: Dec 4, 1989
Inventors
Thomas J. Bellos
Richard D. Keating
Assignee (at issue)
Petrolite Corporation
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.