Granted Patent
Utility
US 5,700,295 · App. 08/541,007
UV absorbers, their preparation and the use thereof
Inventors:
Francesco Fuso, Gerhard Reinert
Patented Case
View Patent ↗
Granted: Dec 23, 1997
Filed: Oct 11, 1995
Inventors
Francesco Fuso
Gerhard Reinert
Assignee (at issue)
Ciba Specialty Chemicals Corporation
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.