Granted Patent
Utility
US 6,815,493 · App. 10/332,967
Mixtures of polysiloxane emulsions
Inventors:
Harald Chrobaczek, Michael Geubtner, Ralf Goretzki, Gunther Tschida
Patented Case
View Patent ↗
Granted: Nov 9, 2004
Filed: Jan 14, 2003
Inventors
Harald Chrobaczek
Michael Geubtner
Ralf Goretzki
Gunther Tschida
Assignee (at issue)
Ciba Specialty Chemicals 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.