Granted Patent
Utility
US 4,778,919 · App. 07/015,814
Maleic or phthalic acid half esters of alkoxylated fatty amines
Inventor:
Rosemarie Topfl
Patented Case
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Granted: Oct 18, 1988
Filed: Feb 17, 1987
Inventor
Rosemarie Topfl
Assignee (at issue)
Ciba-Geigy
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.