Granted Patent
Utility
US 4,891,159 · App. 06/901,268
Low-foam alkali-stable amphoteric surface active agents
Inventor:
Richard J. Nadolsky
Patented Case
View Patent ↗
Granted: Jan 2, 1990
Filed: Aug 27, 1986
Inventor
Richard J. Nadolsky
Assignee (at issue)
Miranol 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.