THIS OPINION WAS NOT WRITTEN FOR PUBLICATION
The opinion in support of the decision being entered today (1) was not written for publication in a law journal
and (2) is not binding precedent of the Board.
Paper No. 19
UNITED STATES PATENT AND TRADEMARK OFFICE
____________
BEFORE THE BOARD OF PATENT APPEALS
AND INTERFERENCES
____________
Ex parte CLAUDIUS KORMANN, MICHEL R. ANSEAU
AND ROBERT N. MULLER
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Appeal No. 1997-2199
Application No. 08/369,340
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ON BRIEF
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Before OWENS, WALTZ, and LIEBERMAN, Administrative Patent Judges.
LIEBERMAN, Administrative Patent Judge.
DECISION ON APPEAL
This is an appeal under 35 U.S.C. § 134 from the examiner’s refusal to allow
claims 1 and 20 which are all the claims pending in the application.
THE INVENTION
The invention is directed to an MRI contrasting medium consisting essentially of an
aqueous dispersion of super paramagnetic solid particles, and a polyelectrolyte. The
super paramagnetic particles have a particle size of 7-50 nm, a surface area of 30-
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