Granted Patent
Utility
US 5,219,922 · App. 07/690,415
Silicone elastomers having reduced compression set and a process for their production
Inventors:
Helmut Steinberger, Klaus Pesch, Thomas Naumann
Patented Case
View Patent ↗
Granted: Jun 15, 1993
Filed: Apr 24, 1991
Inventors
Helmut Steinberger
Klaus Pesch
Thomas Naumann
Assignee (at issue)
Bayer Aktiengesellschaft
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.