Granted Patent
Utility
US 4,594,455 · App. 06/593,025
Amine compositions produced by catalytic alkylation of methylamine by long chain alcohols
Inventor:
Zdzislaw W. Dudzinski
Patented Case
View Patent ↗
Granted: Jun 10, 1986
Filed: Mar 23, 1984
Inventor
Zdzislaw W. Dudzinski
Assignee (at issue)
Millmaster Onyx Group, Inc.
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.