Appeal No. 1997-3328
Application No. 08/226,605
representative of claims 2-11 and 19, and claim 20 (the
independent article claim), as representative of claims 13-18
and 20, to decide the appeal on the respective rejections
under 35 U.S.C. § 103 before us.
The 35 U.S.C. § 103 rejection of claim 19.
Claim 19 recites,
19. A method of introducing a sample into a electroporesis
device,... which method comprises the step of
electrokinetically injecting the sample as a sample plug into
said electrolyte channel by applying an electric field across
the supply and drain channels, wherein said electric field is
applied for a time period which is at least long enough that
the component of said sample having the lowest electrophoretic
mobility migrates into the geometrically defined sample
volume, such that the injected sample plug reflects the
original sample composition.
Appellants describe in the BACKGROUND OF THE INVENTION
that "sample components from the feeders may diffuse into the
capillary tube when the sample has already left the sampling
position" whereby "at the detector there not only arrives a
more or less broadened plug of injected sample fluid" but the
"electrolyte in front and after or between individual plugs of
sample fluid is 'polluted' with unpredictable amounts of
sample components" (specification, page 2). The SUMMARY OF
4
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Next
Last modified: November 3, 2007