Granted Patent
Utility
US 6,319,993 · App. 09/766,553
Vulcanizing agents for unsaturated rubber mixtures
Inventors:
Hermann-Josef Weidenhaupt, Hartmuth Buding, Josef Hahn, Marco Runk
Patented Case
View Patent ↗
Granted: Nov 20, 2001
Filed: Jan 19, 2001
Inventors
Hermann-Josef Weidenhaupt
Hartmuth Buding
Josef Hahn
Marco Runk
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.