Granted Patent
Utility
US 4,552,700 · App. 06/507,200
Organopolysiloxanes containing sulphonate groups, method for the production and use thereof
Inventors:
Peter Panster, Horst Grethe, Peter Kleinschmit
Patented Case
View Patent ↗
Granted: Nov 12, 1985
Filed: Jun 23, 1983
Inventors
Peter Panster
Horst Grethe
Peter Kleinschmit
Assignee (at issue)
Degussa 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.