Appeal No. 1996-0941
Application 08/091,421
Appellant’s claimed invention is a quick-setting
hydraulic binding agent which includes, inter alia, aluminous
cement in an amount less than 5 wt%. Appellant states that
including less than 5 wt% of aluminous cement in the binder,
rather than using a greater amount, produces improved cement
compressive strength and only slightly reduces the early
consistency (specification, page 3). Claim 15 is illustrative
and reads as follows:
15. A quick-setting hydraulic binding agent, comprising:
Portland cement;
aluminous cement in an amount less than 5 wt.%;
an alkali carbonate; and
an organic liquefication-facilitating and calcium
silicate hydration-inhibiting material.
THE REFERENCES
References relied upon by the examiner
Braunauer 3,689,294 Sep. 5,
1972
Braniski et al. (Braniski) 3,748,158 Jul. 24,
1973
Crinkelmeyer et al. (Crinkelmeyer) 4,131,578 Dec. 26,
1978
Kolar et al. (Kolar) 4,168,985 Sep. 25,
1979
Crocker 5,328,507 Jul. 12,
2
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