Granted Patent
Utility
US 5,910,297 · App. 09/114,454
Alkaline earth fluoride manufacturing process
Inventors:
Walter Vladimir Cicha, Donald Keith Swanson
Patented Case
View Patent ↗
Granted: Jun 8, 1999
Filed: Jul 13, 1998
Inventors
Walter Vladimir Cicha
Donald Keith Swanson
Assignee (at issue)
E.I. DU PONT DE NEMOURS AND 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.