Granted Patent
Utility
US 4,568,767 · App. 06/333,942
Process for the manufacture of dialkyl sulfides
Inventors:
Edward J. Dzierza, Bernard Buchholz
Patented Case
View Patent ↗
Granted: Feb 4, 1986
Filed: Dec 23, 1981
Inventors
Edward J. Dzierza
Bernard Buchholz
Assignee (at issue)
Pennwalt Corporation
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.