Appeal No. 96-0150
Application No. 07/969,244
The references of record relied upon by the examiner are:
Nakai et al. (Nakai 5,230,878 Jul. 27,
1993
(effective filing date of June 15, 1990)
Sasagawa et al. (Sasagawa) Kokai 61-34072 Feb. 8, 1986
The appealed claims stand rejected under 35 U.S.C. § 103
as unpatentable over Sasagawa in view of Nakai. We reverse.
The subject matter on appeal is directed to a carbon
black which is defined by, inter alia, an ASTM Aggregate
Volume value of less than 137,000 (nm) and a )D50 value of3
less than 40 nm. Based in part on these parameters, the
claimed carbon black is characterized as having a small
aggregate size and narrow aggregate size distribution
respectively. Such carbon black may be incorporated into
rubber compositions for use as high performance racing tires.
Appellants contend that such tires have improved handling and
cornering properties, increased abrasion resistance and
improved traction because of the presence of the claimed
carbon black.
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