Granted Patent
Utility
US 6,057,375 · App. 08/875,711
Use of alkoxylation products of epoxidized fats as antifoaming agents
Inventors:
Horst-Werner Wollenweber, Klaus Hornfeck, Dieter Kaps, Bernhard Nellessen, Rita Koester, Wolfgang Drees, Peter Daute
Patented Case
View Patent ↗
Granted: May 2, 2000
Filed: Sep 2, 1997
Inventors
Horst-Werner Wollenweber
Klaus Hornfeck
Dieter Kaps
Bernhard Nellessen
Rita Koester
Wolfgang Drees
Peter Daute
Assignee (at issue)
Henkel Kommanditgesellschaft auf Aktien
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.