Appeal No. 95-5074
Application No. 08/186,900
recovering the separated or partially separated
components from the outlet of the column.
In the rejection of the appealed claims, the examiner
relies upon the following references:
Burow 3,225,521 Dec. 28, 1965
Cheh et al. (Cheh) 4,732,581 Mar. 22, 1988
United Kingdom (U.K. '897) 1 204 897 Sep. 9, 1970
(U.K. patent specification)
Appellants' claimed invention is directed to gas
chromatographic methods that utilize packed columns for
separating a mixture of fluid components. The method defined
by appealed claim 2 employs a first and second column wherein
the first column "is maintained at an elution temperature
profile wherein the temperature increases along the column
length from the inlet to the outlet." The gas chromatographic
method of appealed claim 5 requires a packed column that is
"provided with a variable elution temperature profile
decreasing along the column length from the inlet to the
outlet of the column."
Appealed claim 2 stands rejected under 35 U.S.C. § 102(b)
as being anticipated by Burow. Claim 5 stands rejected under
35 U.S.C. § 102(b) as being anticipated by U.K. '897. Claims
3, 4 and 6-9 stand rejected under 35 U.S.C. § 103 as follows:
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