Granted Patent
Utility
US 5,486,228 · App. 08/270,485
Washable color changing compositions
Inventors:
Richard E. Miller, Charlene R. Couch, Cheryl Krieger
Patented Case
View Patent ↗
Granted: Jan 23, 1996
Filed: Jul 5, 1994
Inventors
Richard E. Miller
Charlene R. Couch
Cheryl Krieger
Assignee (at issue)
BINNEY & SMITH 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.