Granted Patent
Utility
US 4,731,196 · App. 06/923,891
Process for making bleach activator
Inventors:
James S. Staton, Patrick C. Hu
Patented Case
View Patent ↗
Granted: Mar 15, 1988
Filed: Oct 28, 1986
Inventors
James S. Staton
Patrick C. Hu
Assignee (at issue)
Ethyl 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.