Granted Patent
Utility
US 4,900,542 · App. 07/062,742
Manufacturing process for microcrystalline emulsions
Inventors:
Umberto V. Parrotta, Jr., Gianluigi Soldati, Frederick P. Sisbarro
Patented Case
View Patent ↗
Granted: Feb 13, 1990
Filed: Jun 15, 1987
Inventors
Umberto V. Parrotta, Jr.
Gianluigi Soldati
Frederick P. Sisbarro
Assignee (at issue)
Carter Wallace, 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.