Granted Patent
Utility
US 5,459,222 · App. 08/073,227
UV-absorbing polyurethanes and polyesters
Inventors:
Juliana Rodgers, Istvan Borsody, Athanasios Karydas, Robert A. Falk, Karl F. Mueller, Michele Kovaleski
Patented Case
View Patent ↗
Granted: Oct 17, 1995
Filed: Jun 4, 1993
Inventors
Juliana Rodgers
Istvan Borsody
Athanasios Karydas
Robert A. Falk
Karl F. Mueller
Michele Kovaleski
Assignee (at issue)
Ciba-Geigy
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.