Granted Patent
Utility
US 5,558,109 · App. 08/391,015
Aqueous cleaning method and composition with nonionic surfactants for removing water soluble flux
Inventors:
Francis R. Cala, Richard A. Reynolds
Patented Case
View Patent ↗
Granted: Sep 24, 1996
Filed: Feb 21, 1995
Inventors
Francis R. Cala
Richard A. Reynolds
Assignee (at issue)
Church & Dwight Co., Inc.
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.