Granted Patent
Utility
US 5,151,520 · App. 07/472,998
Cationic dye-triarylmonoalkylorate anion complexes
Inventors:
Peter Gottschalk, Douglas C. Neckers, Gary B. Schuster
Patented Case
View Patent ↗
Granted: Sep 29, 1992
Filed: Jan 30, 1990
Inventors
Peter Gottschalk
Douglas C. Neckers
Gary B. Schuster
Assignee (at issue)
The Mead Corporation
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.