Granted Patent
Utility
US 4,814,401 · App. 07/161,990
Polymerization of chloroprene with xanthates and dithiocarbamates
Inventors:
Werner Obrecht, Peter Wendling, Wilhelm Gobel, Eberhard Muller
Patented Case
View Patent ↗
Granted: Mar 21, 1989
Filed: Feb 29, 1988
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.