Appeal 2007-0380
Reexamination Control 90/007,199
Patent 6,394,644 B1
between bars 4 and produce, in each mixing plate 2, shaped angled
cavities 6, which are designed in such a way that one transverse rib 5
is produced between them on the surface on one side of the mixing
plate 2….” (Duke 3-4).
15. Duke further states that “[a]t least two adjacent mixing plates 2 are
always superimposed on one another in such a way that the adjacent
shaped angled cavities 6 produced in one mixing plate 2 form,
together with the shaped angled cavities 6 in the adjacent mixing plate
2, transverse prismatic cavities 10 permitting the flow-through of the
molten material ….” (Duke 4).
Signer
16. Signer teaches a device comprising static mixing elements.
17. As noted by the Examiner, in the device taught by Signer, not all of
the crossbars are laterally connected directly to an adjacent crossbar at
the respective ends of the crossbars. (Answer 16).
18. Streiff claim 25 does not require direct connection of adjacent
crossbars but does require “a mixing structure located in said flow
path between said edge surfaces and including a plurality of mixer
components, each of said mixer components having a first end located
between said edges surfaces…and a second end located between said
edge surfaces” where the mixer components comprise crossbars.
19. The crossbars of Signer extend beyond the edge surfaces. (See, e.g.,
Fig. 4).
Written Description
20. Claim 23 requires that the circumferentially extended surface that
extends perpendicularly relative to the axis extends perpendicularly
6
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