Appeal No. 2000-0482
Application 08/569,256
Having considered the teachings of each of the primary
references, we find that the strongest arguments against patent-
ability are based on the teachings of Horiuchi in view of Wagner.
Therefore, we limit our discussion to these two references.
“Horiuchi ‘235 discloses a mold release agent having a
composition, which contains a perfluoroalkyl group containing
phosphoric acid ester, a non-curable polysiloxane or a highly
fluorinated organic compound and a liquid carrier.” Appeal
Brief, page 8. Horiuchi further teaches that “[t]he mold release
agent of the invention may be added, if desired, with powder of
silicon oxide, polytetrafluoroethylene, fluorinated carbon or the
like in order to improve mechanical strengths of a film obtained
by application of the mold release agent. . . .” Appeal Brief,
page 9 (quoting Horiuchi, column 6, lines 42-48). Horiuchi does
not disclose the use of polytetrafluoroethylene (PTFE) having the
specific molecular weight range recited in claim 1. Appeal
Brief, page 9.
“Wagner ‘586 teaches a combination of PTFE and a
mineral filler, which is a combination of two solids to comprise
a mold release agent.” Appeal Brief, page 13. Wagner teaches
that:
5
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 Next
Last modified: November 3, 2007