Granted Patent
Utility
US 6,001,887 · App. 08/668,417
Defoamer emulsion based on organofunctionally modified polysiloxanes
Inventors:
Michael Keup, Roland Sucker
Patented Case
View Patent ↗
Granted: Dec 14, 1999
Filed: Jun 21, 1996
Inventors
Michael Keup
Roland Sucker
Assignee (at issue)
Th. Goldschmidt. AG
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.