Appeal No. 2004-0381
Application No. 09/924,267
II. The 35 U.S.C. § 103 rejections
On pages 6-8 of the Office action of Paper No. 21, the
examiner sets forth his position regarding these § 103
rejections.
The examiner states that Arai sets forth a sensor for
measuring an analyte in a sample, and that Arai teaches an
electrode comprising a thin working layer. On page 7 of the
answer, the examiner indicates that the electrode of Arai is
made, in part, from printed carbon ink. Yet, on page 7 of Paper
No. 21, the examiner states that Arai “does not mention using
electroconductive carbon ink with a printed track; Arai uses
copper ink”.
Upon our review of Arai, we find the following.
Figure 2 of Arai indicates a copper lead and an electrode.
The electrode is discussed in Section 2-2 of Arai. Here, Arai
discloses that the substrate has a copper paste lead. Also, the
electrode material is made of carbon black combined with glucose
oxidase (GOD) and ferrocene, in an organic-solvent-based binder
solution, to produce the ink. The ink is printed on the
portions of the lead not coated with the resist to make an
enzyme electrode. Screen printing is used for all printing.
Section 3-2 of Arai indicates that Figure 3 shows a cyclic
voltammogram of an enzyme electrode wherein the enzyme electrode
has a diameter of 5 mm and a thickness of 5 microns.
Section 3-3 of Arai indicates that Figure 4 shows the data
obtained by measuring the relationship between glucose
concentration and response current at various electrode
thicknesses. The greater the electrode thickness (5, 8, and 10
microns), the greater the response current. At a thickness of
10 microns, marked increases in current were seen up to a
concentration of glucose of 500 mg/dl. As electrode thickness
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