The opinion in support of the decision being entered
today was not written for publication and is not
binding precedent of the Board.
UNITED STATES PATENT AND TRADEMARK OFFICE
BEFORE THE BOARD OF PATENT APPEALS
AND INTERFERENCES
Ex parte C. BERTIL STROMBERG, AUVO K. KETTUNEN,
JIAN E. JIANG and KAJ O. HENRICSON
Appeal No. 2004-1877
Application No. 09/178,512
ON BRIEF
Before KIMLIN, WALTZ and PAWLIKOWSKI, Administrative Patent
Judges.
KIMLIN, Administrative Patent Judge.
DECISION ON APPEAL
This is an appeal from the final rejection of claims 1-8 and
10-20. Claims 21-24, the other claims pending in the present
application, have been withdrawn from consideration. Claim 1 is
illustrative:
1. A method of treating comminuted cellulosic fibrous
hardwood chip material to produce cellulose pulp, comprising:
(a) treating the hardwood chip material with a first
alkaline liquid having a first effective alkali
concentration and at a temperature less than 120°C;
(b) treating the hardwood chip material with a second
alkaline liquid having a second effective alkali
concentration by adding dilution liquor having a low
or substantially zero alkali concentration, while
-1-
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