Granted Patent
Utility
US 5,449,477 · App. 07/991,661
Bleach dispersion of long shelf life
Inventor:
Claude Eckhardt
Patented Case
View Patent ↗
Granted: Sep 12, 1995
Filed: Dec 16, 1992
Inventor
Claude Eckhardt
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.