Granted Patent
Utility
US 5,403,518 · App. 08/161,315
Formulations for improved electrophoretic display suspensions and related methods
Inventor:
Frederic E. Schubert
Patented Case
View Patent ↗
Granted: Apr 4, 1995
Filed: Dec 2, 1993
Inventor
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.