Granted Patent
Utility
US 5,989,847 · App. 08/741,081
Compositions and methods for neutralizing and coloring solutions
Inventors:
John Y. Park, James N. Cook, Anthony J. Dziabo
Patented Case
View Patent ↗
Granted: Nov 23, 1999
Filed: Oct 30, 1996
Inventors
John Y. Park
James N. Cook
Anthony J. Dziabo
Assignee (at issue)
Allergan, 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.