Granted Patent
Utility
US 4,769,407 · App. 06/926,125
Elastomeric mass of polychloroprene sol and polychloroprene gel
Inventors:
Werner Obrecht, Peter Wendling, Wilhelm Gobel, Eberhard Muller
Patented Case
View Patent ↗
Granted: Sep 6, 1988
Filed: Nov 3, 1986
Inventors
Werner Obrecht
Peter Wendling
Wilhelm Gobel
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.