Granted Patent
Utility
US 6,576,797 · App. 08/221,137
Thioether substituted hydroxybenzophenones and stabilized compositions
Inventors:
Joseph Suhadolnik, Carmen Hendricks, Roger Meuwly
Patented Case
View Patent ↗
Granted: Jun 10, 2003
Filed: Mar 31, 1994
Inventors
Joseph Suhadolnik
Carmen Hendricks
Roger Meuwly
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.