The opinion in support of the decision being entered today was not written
for publication and is not binding precedent of the Board.
Paper No. 16
UNITED STATES PATENT AND TRADEMARK OFFICE
____________
BEFORE THE BOARD OF PATENT APPEALS
AND INTERFERENCES
____________
Ex parte GUY F. HUDSON
and RICHARD C. ELLIOTT
____________
Appeal No. 2001-2203
Application No. 09/007,949
____________
ON BRIEF
____________
Before BARRETT, RUGGIERO, and TIMM, Administrative Patent Judges.
RUGGIERO, Administrative Patent Judge.
DECISION ON APPEAL
This is a decision on the appeal from the final rejection of
claims 1-26. Claims 27-40 have been withdrawn from consideration
as being directed to a non-elected species.
The claimed invention relates to a method for forming a
contact electrically connected to a metallization line in which a
heat treatment is applied to two interfacing metal layers of a plug
and metallization line. The heat treatment causes a selected
alloying element from one of the metal layers to diffuse into the
other of the metal layers resulting in a substantially continuous
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