Appeal No. 1997-0498
Application No. 08/452,064
This is an appeal from the final rejection of claims 7-9,
11 and 12, all the claims remaining in the present
application. Claim 7 is illustrative:
7. A speaker diaphragm, comprising an acoustic
vibrational material wherein the acoustic vibrational material
comprises a fiber reinforcement material and an epoxy resin
wherein 10 to 25 mole percent of the epoxy resin comprises a
polybutadiene elastomer containing not less than 90 mole
percent of 1,2-linked units, and wherein the polybutadiene
elastomer has principal chain terminals, the terminals having
functional groups selected from the group consisting of
hydroxyl, carboxyl, thiol, acid anhydride, primary amine,
secondary amine and tertiary amine, the polybutadiene
elastomer being incorporated into the molecular chains of the
epoxy resin.
The examiner relies upon the following references as
evidence of obviousness:
Graham 4,002,599 Jan. 11, 1977
Browning et al. (Browning) 4,016,022 Apr. 05, 1977
Gounder et al. (Gounder) 4,340,715 Jul. 20, 1982
Gaku et al. (Gaku) 4,780,507 Oct. 25, 1988
Makihara et al. (Japanese '794) 55-115794 Sep. 05, 1979
(Japanese Kokai patent publication)
The present application is a divisional application of
U.S. Application No. 07/902,772, filed June 23, 1992 (parent
application). An appeal was taken to this Board in the parent
application, and in a decision dated January 31, 1997, the
Board reversed the examiner's rejections under 35 U.S.C.
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