Granted Patent
Utility
US 4,699,718 · App. 06/821,154
Ion chromatography method and apparatus
Inventors:
William R. Jones, Allan L. Heckenberg, Petr Jandik
Patented Case
View Patent ↗
Granted: Oct 13, 1987
Filed: Jan 21, 1986
Inventors
William R. Jones
Allan L. Heckenberg
Petr Jandik
Assignee (at issue)
Millipore 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.