Granted Patent
Utility
US 6,113,810 · App. 08/383,667
Methods of preparing electrophoretic dispersions containing two types of particles with different colors and opposite charges
Inventors:
Wei-Hsin Hou, Frederic E. Schubert
Patented Case
View Patent ↗
Granted: Sep 5, 2000
Filed: Feb 3, 1995
Inventors
Wei-Hsin Hou
Frederic E. Schubert
Assignee (at issue)
Copytele, 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.