Granted Patent
Utility
US 4,297,269 · App. 06/197,400
N,N'-Bis(1-cyclohexyl-1-ethyl)-p-phenylenediamine, and rubber compounds containing the same
Inventors:
Helmut L. Merten, Gene R. Wilder
Patented Case
View Patent ↗
Granted: Oct 27, 1981
Filed: Oct 16, 1980
Inventors
Helmut L. Merten
Gene R. Wilder
Assignee (at issue)
Monsanto Company
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.