Appeal No. 95-2741
Application 08/008,120
The examiner made three rejections:
1. The rejection of claim 2 under 35 U.S.C. § 112, second paragraph as indefinite;
2. The rejection of claims 1-3 under 35 U.S.C. § 103 as unpatentable over the Austin2
patent; and
3. The rejection of claims 1-6 under 35 U.S.C. § 103 as unpatentable over the
combination of the Austin and the Lee patent. 3
We reverse the rejections under 35 U.S.C. § 103 and 35 U.S.C. § 112, second paragraph.
BACKGROUND
A. The claimed subject matter
The invention is directed to a process for the producing carbon black. Carbon black is
particulate carbon produced in a reactor by pyrolysis of a hydrocarbon. Pyrolysis refers to the thermal
decomposition of a hydrocarbon. The hydrocarbon is injected into the stream of hot combustion gases4
at one or more points to form an effluent. The hydrocarbon may be in the form of liquid, gas or vapor,5
2 Austin, U.S. Patent 4,358,289, issued November 9, 1982
3 Lee et al., U.S. Patent 5,082,502, issued January 21, 1992
4 Specification page 2, lines 9-10.
5 Specification page 2, line 8.
2
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