Granted Patent
Utility
US 4,392,917 · App. 06/308,175
Amphoteric water-in-oil self-inverting polymer emulsion
Inventors:
Stanley A. Lipowski, John J. Miskel, Jr.
Patented Case
View Patent ↗
Granted: Jul 12, 1983
Filed: Oct 5, 1981
Inventors
Stanley A. Lipowski
John J. Miskel, Jr.
Assignee (at issue)
Diamond Shamrock 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.