Appeal No. 2002-0751 Page 2
Application No. 09/336,051
organic primary alcohol for [sic] form an extrudate which is water-
soluble at a temperature in the range of 25-35°C;
(ii) chilling and pelletizing the resulting extrudate at a temperature in the
range of from about 5°C up about 60°C;
(iii) cryogenically grinding the resultant pelletized product at a pressure in
the range of from about 1 atmosphere up to about 50 atmospheres to
a particle size in the range of from about 10 up to about 500 microns
to form cryogenically-ground particles;
(iv) subsequently comminuting the resulting cryogenically-ground
particles in order to form a powder;
(v) mixing the resulting powder with:
(a) at least one compatible sulfonate or sulfate-containing
surfactant having both detergent and foaming properties; and
(b) from 25 to 45% by weight of a filler selected from the group
consisting of alkali metal bicarbonates, alkali metal sulfates,
alkali metal carbonates, alkali metal citrates, alkali metal
phosphates and sodium chloride; and then
(vi) molding the resultant mixture into a toilet block.
The examiner relies on the following reference:
McDermott et al. (McDermott) 5,543,439 Aug. 06, 1996
Claims 37-40 stand rejected under 35 U.S.C. § 103 as obvious in view of
McDermott.
We reverse.
Discussion
The claims are directed to a method of making products (toilet blocks)
intended for long-term release of fragrance, and optionally other agents, when
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