THIS OPINION WAS NOT WRITTEN FOR PUBLICATION
The opinion in support of the decision being entered today (1) was not written for publication in a law journal and (2)
is not binding precedent of the Board.
Paper No. 41
UNITED STATES PATENT AND TRADEMARK OFFICE
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BEFORE THE BOARD OF PATENT APPEALS
AND INTERFERENCES
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Ex parte PHILIPPE BUGNON and FRITZ HERREN
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Appeal No. 1997-0687
Application No. 08/359,710
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ON BRIEF
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Before PAK, WALTZ, and LIEBERMAN, Administrative Patent Judges.
LIEBERMAN, Administrative Patent Judge.
DECISION ON APPEAL
This is an appeal under 35 U.S.C. § 134 from the examiner’s refusal to allow claims 12, 19, 22, 24, 26, and 27 which
are all the claims remaining in the application. THE INVENTION
The invention is directed to a process for warp free pigmenting of polyolefins by adding to the polyolefins
diketo-pyrrolopyrrole pigment particles coated with from 1 to 5% by weight of a polyvinyl pyrrolidone polymer. In a
separate embodiment the coated pigment may be prepared by coating the diketo-pyrrolopyrrole pigment particles
with 1 to 10% by weight of a vinyl pyrrolidone-vinyl acetate copolymer. In each embodiment the coated pigment
particles are thereafter admixed with a polyolefin.
THE CLAIMS
Claims 24 and 27 are illustrative of appellants’ invention and are reproduced below.
24. A process for warp-free pigmenting of polyolefins, which comprises:
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Last modified: November 3, 2007