Appeal No. 96-0088
Application No. 08/038,426
receiving and expelling said emissions, comprising the steps
of:
forming an additive for the three-way catalytic
conversion of gasoline combustion engine emission, the
additive comprising at least one compound of a metal catalyst
selected from the group consisting of noble metals and non-
noble metals capable of effecting said conversion, wherein
each noble metal catalyst is directly soluble in gasoline in a
concentration of about 0.01 to about 10 mg/l and each non-
noble metal catalyst is directly soluble in gasoline in a
concentration of about 10 to about 100 mg/l;
dissolving at least a portion of said additive in
gasoline; and
feeding the gasoline having said additive dissolved
therein to the internal combustion engine,
entraining the metal catalyst in emission fumes from the
engine,
depositing the metal catalyst on a surface of a catalytic
vessel located downstream of the combustion chamber;
simultaneously oxidizing carbon monoxide and unburned
hydrocarbons, and reducing nitrogen oxides in the catalytic
vessel by contacting the emissions and the deposited metal.
THE REFERENCES OF RECORD
As evidence of obviousness, the examiner relies upon the
following references of record.
Lyons et al. (Lyons) 2,086,775 Jul. 13,
1937
Robinson et al. (Robinson ‘017) 4,382,017 May 3,
1983
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