Appeal No. 2000-1869
Application No. 08/922,478
Paper No. 36).1 Claims 1, 4, 7 and 9-12 are the only claims
remaining in this application. We have jurisdiction pursuant to
35 U.S.C. § 134.
According to appellants, the invention is directed to a
process for producing "-alumina by calcining a transition
alumina in an atmosphere containing at least 10% by volume of
hydrogen chloride at a temperature of from 700 to 1300°C at
atmospheric pressure for a time of 10-120 minutes, where the
transition alumina is made by calcining aluminum hydroxide which
in turn is produced by the hydrolysis of aluminum isopropoxide
(Brief, pages 3-5). A copy of illustrative independent claim 1
is attached as an Appendix to this decision.
The examiner has relied upon the following references as
evidence of obviousness:
Lindsay et al. (Lindsay) 3,262,754 Jul. 26, 1966
Harato et al. (Harato) 5,302,368 Apr. 12, 1994
Ayame et al. (Ayame), “Changes in Structure and Acidity of
Alumina with Chlorine Treatment,” pp. 416-419, 62nd CATSJ Meeting
Abstracts: No. 2D105, 1988.2
1 A minor amendment to correct several typographical errors was filed
concurrently with the Brief (Aug. 27, 1999). This amendment was also entered
by the examiner (see the Brief, page 3; Answer, page 2; and the Advisory
Action dated Oct. 12, 1999, Paper No. 40).
2 We rely upon a full English translation of this document, previously
made of record.
2
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