Granted Patent
Utility
US 6,188,506 · App. 09/181,162
Conductive color-changing ink
Inventors:
Terrance Z. Kaiserman, Andrew Ferber, Adrian I. Rose
Patented Case
View Patent ↗
Granted: Feb 13, 2001
Filed: Oct 28, 1998
Inventors
Terrance Z. Kaiserman
Andrew Ferber
Adrian I. Rose
Assignee (at issue)
Colortronics Technologies L.L.C.
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.