Appeal No. 95-0353
Application 07/837,241
darker color of the recycled plastic shows through the lighter
pigmented films. Appellants’ solution to the problem is to
insert an opaque plastic layer containing sufficient pigment to
visually block the darker color of the recycled plastic.
The examiner states that Bonis “discloses the use of
opacifiers, pigments and colorants ...” (answer, page 5). The
examiner cites the following passage at col. 6, lines 43-48 of
Bonis for support:
Although preferred illustrative embodiments of the
invention have been shown and described, it is to be
understood that various modifications and substitutions
may be made by those skilled in the art without
departing from the novel spirit and scope of the
present invention.
We agree with appellants that this is boiler plate language and
does not, in any way, convey to the skilled artisan that Bonis
teaches or suggests using opacifiers, pigments and colorants in
the thermoplastic materials making up the layers of the molded
containers. Bonis neither recognizes appellants’ problem nor
suggests or discloses inserting an opaque plastic layer between a
dark plastic layer and a pigmented layer to visually block the
dark plastic layer, or for that matter, using any opacifier,
pigment or colorant to reduce light transmission. While the
examiner concludes that “[i]t is well known in the art to use
opacifier [sic, opacifiers], pigments and colorants in [a]
4
Page: Previous 1 2 3 4 5 6 7 8 Next
Last modified: November 3, 2007