Appeal 2007-1002
Application 10/257,830
19. Static bentonite-water suspension mixer element having a housing
with oblique surfaces of the housing which taper in the manner of a funnel
with a nozzle which is directed at a stationary deflection surface arranged at
an angle of 70 to 110° with respect to the flow direction of the media and at
least one passage between the deflection surface and the housing.
The Examiner relies upon the following references in the rejection of
the appealed claims:
Frischknecht (CH ‘064) CH 182,064 Jan. 31, 1936
Kalthoff (DE ‘926) DE 687,926 Jan. 18, 1940
Tsien US 4,087,862 May 2, 1978
Yao US 4,124,309 Nov. 7, 1978
Farrar US 6,305,835 B1 Oct. 23, 2001
Schauerte (EP ‘235) EP 0,994,235 Sep. 12, 2002
Appellant’s claimed invention is directed to a static mixer for
producing a bentonite-water suspension. The mixer has a housing with a
stationary deflection surface at an angle of 70 to 110° with respect to the
flow direction (claim 1), and at least one passage between the deflection
surface and the housing (claim 19).
Appealed claims 1-3, 6-8, 12, 15, and 16 stand rejected under
35 U.S.C. § 102(e) as being anticipated by Farrar. Claims 19, 20, and 21
stand rejected under 35 U.S.C. § 102(b) as being anticipated by Yao. Claims
19, 20, and 21 stand rejected under 35 U.S.C. § 102(b) as being anticipated
by DE ‘926. Also, claims 19, 20, 21, and 23 stand rejected under 35 U.S.C.
§ 102(b) as being anticipated by CH ‘064. In addition, the appealed claims
stand rejected under 35 U.S.C. § 103(as) follows:
(a) claim 23 over Yao in view of DE ‘926 and Tsien,
(b) claims 1-7 and 9-22 over EP ‘235 in view of Yao, and
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