Granted Patent
Utility
US 6,261,359 · App. 09/095,838
Fluorescent pigments
Inventors:
Zhimin Hao, John S. Zambounis, Abul Iqbal
Patented Case
View Patent ↗
Granted: Jul 17, 2001
Filed: Jun 11, 1998
Inventors
Zhimin Hao
John S. Zambounis
Abul Iqbal
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.