The examiner relies upon Talbot for teaching the use of a
compressible substance, such as carbon dioxide. The examiner
relies upon Yamamoto for also teaching the use of a compressible
substance such as nitrogen gas. (answer, page 3). We find that
Bivens is directed to a two-part resin system. One part of the
two-part resin system comprises an unsaturated polymerizable
polyester resin, a crosslinking agent, and a solid particulate
such as limestone (col. 2, lines 55, 63-65, col. 5, lines 32-
34). We refer to this part as the ~first component~ of the
system. A second part of the two-part resin system comprises a
peroxide catalyst, water, and solid particulates (col. 2,lines
60-65). We refer to this part as the ŝecond component~ of the
system.
We also find that Talbot teaches a two-part resin system.
One part of the two-part resin system comprises the resin
composition (col 2. line 33), a solid particulate such as a
calcium carbonate (col. 2, line 40), a CO2 generating weak acid
(col. 2, line 54), and a small, effective amount of water (col.
2 line 66-col. 3, line 3). We refer to this part of the system
as the ~first component~ of the two-part resin system.
The second part of the two-part system of Talbot comprises
a conventional catalyst, or hardener paste (such as benzoyl
peroxide), and a filler (col. 3, lines 4-12). We refer to this
part as the ŝecond component~ of the two-part resin system.
One of the objects of the invention of Talbot is to add
significant shelf life to the mining roof bolting package
system. This is accomplished by the addition of a relatively
weak acid constituent which reacts with the calcium carbonate
filler in the resin system to form carbon dioxide in situ (col.
1, lines 47-62). This enables generation of carbon dioxide in
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