Granted Patent
Utility
US 6,490,910 · App. 09/830,089
Apparatus and a method for investigating the properties of a solid material by inverse chromatography
Inventors:
David Alexander Butler, Carl Levoguer, Daryl R Williams
Patented Case
View Patent ↗
Granted: Dec 10, 2002
Filed: Apr 23, 2001
Inventors
David Alexander Butler
Carl Levoguer
Daryl R Williams
Assignee (at issue)
SURFACE MEASUREMENT SYSTEMS LTD
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.