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for publication and is not binding precedent of the Board.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. 15
UNITED STATES PATENT AND TRADEMARK OFFICE
__________
BEFORE THE BOARD OF PATENT APPEALS
AND INTERFERENCES
__________
Ex parte PETER SCHWAB and
MICHAEL SCHULZ
___________
Appeal No. 2001-1693
Application No. 09/168,099
__________
ON BRIEF
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Before GARRIS, WALTZ, and DELMENDO, Administrative Patent Judges.
GARRIS, Administrative Patent Judge.
DECISION ON APPEAL
This is a decision on an appeal from the final rejection of claims 2, 4, 5, and 7-11
and from the refusal of the examiner to allow claims 3 and 12 as amended subsequent
to the final rejection. These are all of the claims remaining in the application.
The subject matter on appeal relates to a process for preparing propene by
(a) reaction of 1-butene, 2-butene and isobutene to give propene, 2-pentene and
2-methyl-2 butene, (b) separation of the propene from the product mixture formed in (a)
thereby leaving a mixture of 2-pentene and 2-methyl-2-butene, (c) reaction of this last
mentioned mixture with ethene to give propene, 1-butene and isobutene, (d) separation
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