Granted Patent
Utility
US 4,954,585 · App. 07/289,816
Process for the production of sulfur-modified polychloroprene
Inventors:
Werner Obrecht, Peter Wendling, Rudiger Musch, Eberhard Muller
Patented Case
View Patent ↗
Granted: Sep 4, 1990
Filed: Dec 27, 1988
Inventors
Werner Obrecht
Peter Wendling
Rudiger Musch
Eberhard Muller
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.