Appeal No. 2005-0805
Application No. 10/234,097
means for processing the sample ion, said
processing means guiding the sample ion into a magnetic
field or an electric field for separating the ion
according to a mass number to obtain a mass spectrum
for analysis.
In addition to the admitted prior art, the examiner relies
upon the following references as evidence of obviousness:
Shiokawa 5,916,388 Jun. 29, 1999
“Stainless Steels”, Marks’ Standard Handbook for
Mechanical Engineers 10th Edition, pgs. 6-32 - 6-37
(1996). Section by James D. Redmond. (Redmond)
Appellants’ claimed invention is directed to a mass
spectrometer for analyzing a sample gas comprising a stainless
steel electrode that is baked at a temperature in the range of
200oC to 700oC and reconditioned by baking at a temperature in
the same range. The initial baking of the stainless steel
oxidizes the surface to produce chromium dioxide and chromium
oxide which reduces pinholes, while the reconditioning baking
removes components of the sample gas which contaminate the
surface.
Appealed claims 1-5 stand rejected under 35 U.S.C. § 103(a)
as being unpatentable over the admitted prior art in view of
Redmond and Shiokawa.
2
Page: Previous 1 2 3 4 5 6 7 Next
Last modified: November 3, 2007