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was not written for publication and is not binding
precedent of the Board.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. 26
UNITED STATES PATENT AND TRADEMARK OFFICE
________________
BEFORE THE BOARD OF PATENT APPEALS
AND INTERFERENCES
________________
Ex parte SERGE MOREAU and BERNARD SARDAN
________________
Appeal No. 1998-3179
Application No. 08/718,696
________________
ON BRIEF
________________
Before KIMLIN, OWENS and TIMM, Administrative Patent Judges.
KIMLIN, Administrative Patent Judge.
DECISION ON APPEAL
This is an appeal from the final rejection of claims 1, 2, 10
and 11, all the claims remaining in the present application. Claim 1
is illustrative:
1. A process for separating nitrogen from a gas mixture
containing nitrogen and at least one gas which is less polar than
nitrogen, and employing a technique of differential adsorption of the
gases, called PSA process, using an adsorbent of zeolite type,
according to which the PSA process is used at a temperature
greater than 50°C by employing as adsorbent a zeolite whose
nitrogen adsorption isotherm at 20°C exhibits a curvature
characterized by a parameter C defined by the formula:
-1-
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