Granted Patent
Utility
US 5,755,875 · App. 08/621,761
Fluorescent chromophores containing cyanimino groups
Inventors:
John S. Zambounis, Zhimin Hao, Abul Iqbal
Patented Case
View Patent ↗
Granted: May 26, 1998
Filed: Mar 22, 1996
Inventors
John S. Zambounis
Zhimin Hao
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.