Appeal 2007-0694
Reexamination Control 90/006,433
Patent 5,428,933
interior and exterior of which are substantially parallel to each other.
(Guarriello, Fig. 8 and Horobin ‘969 and ‘382, Fig. 1). The upper and lower
faces of Guarriello and Horobin’s side walls have locking members in the
form of projections and recesses. (Id.). Guarriello and Horobin’s
projections and recesses are offset such that a recess on one row on the top
edge is opposed to a projection on the bottom edge. (Guarriello, col. 4, l. 67
to col. 5, l. 9, Horobin ‘969 and ‘382, Fig. 1). Additionally, Guarriello and
Horobin’s blocks contain an interior separator. (Guarriello, Fig. 8, part 290,
col. 5, ll. 64-68 and Horobin ‘969 Fig. 3, part 82, col. 4, ll. 37-39, Horobin
‘382, Fig. 1, part 18).
Guarriello’s blocks are formed such that they may be interconnected
in a bidirectional manner. (Guarriello, col. 5, ll. 9-14 and 45-48).
Guarriello’s projections and recesses form two alternating rows. For
example, Guarriello Figs. 8 and 9 depict alternating rows of projections
(ribs) 270 and 372 and alternating rows of recesses (channels) 274 and 276.
As with Patentee’s claimed sealing means, Guarriello’s upper face surface
262 has a height above Guarriello’s recesses but below Guarriello’s
projections.
Horobin’s projections and recesses extend across the entire length of
its top and bottom edges. (Horobin ‘969 and ‘382, Fig. 1). The projections
and recesses are of substantially the same dimensions and each has the same
square shape. (Id.).
One of ordinary skill in the art would understand from Guarriello that
insulating blocks having alternating rows of projections and recesses can be
stacked together to form a wall. Horobin ‘969 and ‘382 inform one of
ordinary skill in the art that insulating blocks having square projections and
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