Granted Patent
Utility
US 4,645,848 · App. 06/865,489
Phenylene group-containing organopolysiloxanes and method for their preparation
Inventors:
Peter Panster, Peter Kleinschmit
Patented Case
View Patent ↗
Granted: Feb 24, 1987
Filed: May 21, 1986
Inventors
Peter Panster
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.