Granted Patent
Utility
US 5,006,596 · App. 07/477,697
Self-inverting, water-in-oil emulsions
Inventors:
Fu Chen, Edward J. Connors
Patented Case
View Patent ↗
Granted: Apr 9, 1991
Filed: Feb 9, 1990
Inventors
Fu Chen
Edward J. Connors
Assignee (at issue)
Betz Laboratories, 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.