Appeal 2006-3315
Application 10/309,321
an intermediate layer formed between said substrate and said
separation layer, said intermediate layer comprising aggregate particles
bonded together with glass frits, said aggregate particles of said intermediate
layer being smaller than an average pore size of said substrate and larger
than aggregate particles of said separation layer.
The Examiner relies upon the following references in the rejections of
the appealed claims:
Eriksson US 3,447,742 Jun. 3, 1969
Rosenberg US 3,696,932 Oct. 10, 1972
Abe US 4,971,696 Nov. 20, 1990
Goldsmith US 4,983,423 Jan. 8, 1991
Yokosawa US 5,110,470 May 5, 1992
Ciora US 5,773,103 Jun. 30, 1998
Sehgal US 5,772,735 Jun. 30, 1998
Appellants’ claimed invention is directed to a ceramic filter
comprising a substrate, a separation layer comprising titania and an
intermediate layer formed between the substrate and the separation layer.
The separation layer has an average pore size and thickness within the
claimed ranges, and the intermediate layer comprises aggregate particles
bonded together with glass frits.
Appealed claims 2 and 3 stand rejected under 35 U.S.C. § 102(b) or,
in the alternative, under 35 U.S.C. § 103(a) over Ciora. In addition, the
appealed claims stand rejected under 35 U.S.C. § 103(a) as follows:
(a) claims 2-4 and 6 over Abe in view of Goldsmith,
2
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