Appeal No. 2003-0754
Application No. 09/553,630
16. A substrate coated with a dried and cured
layer of a clear aqueous cathodic electrocoating
composition comprising a binder of an epoxy-amine
adduct of an epoxy resin that has been reacted with an
amine, a blocked polyisocyanate crosslinking agent,
and an organic or inorganic acid as the neutralizing
agent for the epoxy amine adduct; wherein the
improvement is a catalyst of an alkyl tin oxide that
has been dissolved with an organic or inorganic acid
prior to incorporation in the coating composition.
The examiner relies upon the following references as
evidence of unpatentability:
DeBroy et al. (DeBroy) 5,070,149 Dec. 3, 1991
Büttner et al. (Büttner) 5,176,804 Jan. 5, 1993
Zwack et al. (Zwack) 5,948,229 Sep. 7, 1999
(Filed Mar. 19, 1997)
Jamasbi 6,084,026 Jul. 4, 2000
(Filed Jun. 1, 1998)
Claims 10, 12, 13, and 16 stand rejected under 35 U.S.C.
§ 102(b) as being anticipated by Büttner.
Claims 10-16 stand rejected under 35 U.S.C. § 103 as being
unpatentable over Büttner in view of DeBroy, Zwack or Jamasbi.
Appellants filed an Appeal Brief on March 26, 2002. In
response, the examiner reopened prosecution in the Office Action
mailed May 20, 2002. In response, appellants filed a
Supplemental Brief on October 15, 2002. In the Supplemental
Brief, appellants requested that their statements made in the
Brief filed on March 26, 2002 be considered in conjunction with
the Supplemental Brief. We have carefully reviewed both the
Appeal Brief and the Supplemental Brief. In this appeal, when
we refer to the Brief, we are referring to the Supplemental
Brief filed on October 15, 2002, while being aware that in the
Supplemental Brief, appellants refer to their position made in
Appeal Brief filed March 26, 2002.
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