Granted Patent
Utility
US 5,401,871 · App. 08/202,399
Organopolysiloxane polyethers and their use as hydrolysis-resistant wetting agents in aqueous systems
Inventors:
Georg Feldmann-Krane, Werner Hohner, Dietmar Schaefer, Stefan Silber
Patented Case
View Patent ↗
Granted: Mar 28, 1995
Filed: Feb 24, 1994
Inventors
Georg Feldmann-Krane
Werner Hohner
Dietmar Schaefer
Stefan Silber
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.