Appeal No. 1999-1281
Application No. 08/712,249
Claims 27 is illustrative of the subject matter on appeal and is reproduced
below:
27. An anticoagulant composition which does not adversely affect the
measurement of calcium ion concentration within a blood sample
produced by a process comprising
(a) contacting an aqueous solution of sodium heparin with an acidic ion
exchange resin for a period of time sufficient such that the aqueous
effluent produce [sic] possesses a pH of about 3 or less;
(b) reacting said effluent with a heavy metal-containing compound
suitable to produce a heavy metal heparin salt;
(c) reacting said heavy metal heparin salt produced in Step (b) with an
aqueous solution of lithium salts in sufficient amounts such that the
resulting solution exhibits a pH of about 6 to about 7.
The references relied upon by the examiner are
Eisenhardt et al. (Eisenhardt) 4,687,000 Aug. 18, 1987
(Celsus) “Heparin-Blood Collection and Analysis,” Celsus Laboratories, Inc.,
Cincinnati, Ohio (1991)
GROUND OF REJECTION
Claim 27-49 stand rejected under 35 U.S.C. § 103 as being unpatentable
over Eisenhardt in view of Celsus.
We reverse.
DISCUSSION
In reaching our decision in this appeal, we have given careful consideration
to the appellants’ specification and claims, and to the respective positions
articulated by the appellants and the examiner. We make reference to the
examiner’s Answer1 for the examiner’s reasoning in support of the rejections. We
1 Paper No. 24, mailed March 20, 1998.
2
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