Granted Patent
Utility
US 5,288,789 · App. 07/858,202
Foam control in fermentation broths with a condensate of alkylphenol and aldehyde that has been polyoxyalkylated
Inventor:
Kevin McCarthy
Patented Case
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Granted: Feb 22, 1994
Filed: Mar 26, 1992
Inventor
Kevin McCarthy
Assignee (at issue)
Petrolite 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.