Appeal No. 1996-2566
Application No. 08/107,656
g. not prior to said feeding step f), heat-treating
at temperatures of 40EC to 70EC for 1 to 3 hours
to form a solution of basic sulfate-containing
polyaluminum chloride having a sulfate
content
of 1 to 6 percent by weight and an aluminum
concentration of 3 to 10 percent by weight,
wherein said molar ratio of OH/Al in said
solution of said basic sulfate-containing
polyaluminum chloride is from 1.05:1 to
1.95:1.
The references of record relied upon by the examiner are:
Schmerling 2,369,691 Feb.
20, 1945
Becher 1,347,413 Feb.
20, 1974
(published United Kingdom Pat. Application)
Sinha 4,264,569 Apr.
28, 1981
Davis 4,560,541 Dec.
24, 1985
The appealed claims stand rejected under 35 U.S.C. § 112,
first paragraph, “written description requirement.” The
appealed claims also stand rejected under 35 U.S.C. § 112,
second paragraph. Appealed claims 12, 13, and 18-21 stand
rejected under 35 U.S.C. § 103 as unpatentable over Becher in
view of Davis and Sinha. Appealed claims 15-17 stand rejected
under the same section of the statute as unpatentable over
Becher in view of Davis and Sinha further in view of
Schmerling.
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