Appeal No. 1998-1870
Application No. 08/447,063
(polyvinylalcohol), and containing agrochemicals, is the fact of
defects (e.g. bubbles) that may be present in film which can lead
to weaknesses and become a source of leakage through pinholes at
the point of the defect.
Faced with a film packaging problem due to film defects as
above, we are convinced that an inventor would have been not only
motivated to, but expected to, look to available film packaging
knowledge for a solution to the film defect problem. Thus, it is
our view that the Chikaishi reference would have been uncovered
since it pertains to polyvinyl alcohol (PVA) films used in
packaging various goods (pages 1 and 2). More specifically, this
document teaches laminating two or more sheets of PVA film (page
6) and expressly reveals the knowledge in the art of solving the
problem of film pinholes since, as explained in the document
(page 6),
[i]f any small bubbles were present in one layer of the
laminated film, such bubbles may be compensated by the
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 Next
Last modified: November 3, 2007