Granted Patent
Utility
US 5,244,547 · App. 07/717,298
Decreasing the concentration of hydroxyl ions in aqueous alkaline peroxide solutions
Inventors:
Arthur L. Clifford, Derek J. Rogers
Patented Case
View Patent ↗
Granted: Sep 14, 1993
Filed: Jun 18, 1991
Inventors
Arthur L. Clifford
Derek J. Rogers
Assignee (at issue)
H-D Tech 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.