Appeal No. 97-1403
Application No. 08/275,214
Noik 3,184,965 May 25, 1965
Guimard et al. (Guimard) 4,455,875 June 26, 1984
Mattar, Critical Evaluation and Processing of Data Prior to
Pressure Transient Analysis, Society of Petroleum Engineers,
pages 709 through 721, 1992.
Claims 1 through 3 and 5 through 9 stand rejected under
35 U.S.C. § 103 as being unpatentable over Guimard in view of
Noik and Mattar.
Reference is made to the brief, final rejection and the
answer for the respective positions of the appellant and the
examiner.
OPINION
We have carefully considered the entire record before us,
and we will reverse the obviousness rejection of claims 1 through
3 and 5 through 9.
We agree with the appellant’s assessment of the teachings of
Guimard (Brief, pages 5 and 6), Noik (Brief, page 6), and Mattar
(Brief, pages 6 through 8). The pressure measurement sonde in
Guimard uses a pressure and temperature detector 18 in unison
with a reference detector 20 that only measures temperature. By
subtracting the temperature reading obtained by detector 20 from
the pressure and temperature readings obtained by the detector 18
the pressure measurement sonde yields an absolute pressure value
of the surrounding medium in the oil well. The three diaphragms
3
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