Granted Patent
Utility
US 5,286,777 · App. 07/912,063
Preparing a dye-containing polymer
Inventors:
Ulrich Schoeler, Peter Ast, Eugene W. Reynolds, deceased, Darlene J. Spira-Solomon
Patented Case
View Patent ↗
Granted: Feb 15, 1994
Filed: Jul 7, 1992
Inventors
Ulrich Schoeler
Peter Ast
Eugene W. Reynolds, deceased
Darlene J. Spira-Solomon
Assignee (at issue)
Hewlett-Packard Company, L.P.
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.