Granted Patent
Utility
US 6,540,969 · App. 09/723,841
Preparation of hexafluorophosphoric acid
Inventors:
W. Novis Smith, Joel McCloskey
Patented Case
View Patent ↗
Granted: Apr 1, 2003
Filed: Nov 28, 2000
Inventors
W. Novis Smith
Joel McCloskey
Assignee (at issue)
Lithdyne, LLC
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.