Granted Patent
Utility
US 5,523,019 · App. 08/334,610
Defoamer composition
Inventor:
Samuel Kim
Patented Case
View Patent ↗
Granted: Jun 4, 1996
Filed: Nov 4, 1994
Inventor
Samuel Kim
Assignee (at issue)
E. F. Houghton & Company
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.