Granted Patent
Utility
US 6,512,016 · App. 09/910,373
Compositions for defoaming aqueous compositions
Inventors:
Ayaz Khan, Samuel A. Firman, David W. Brown, John E. Nowicki
Patented Case
View Patent ↗
Granted: Jan 28, 2003
Filed: Jul 20, 2001
Inventors
Ayaz Khan
Samuel A. Firman
David W. Brown
John E. Nowicki
Assignee (at issue)
Cognis 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.