Appeal No. 1999-1088
Application 08/689,867
thin film resistors were known in the art of comparable construction to that which has been
claimed, but the teachings of which have been utilized in the Figure 2 embodiment of
MacElwee to achieve series connected field effect transistors. Mead is therefore
cumulative as to the teaching value of Figure 3 of MacElwee anyway. On the other hand,
Furuya generally teaches the conductive shielding either above or below or above and
below the polysilicon resistive element is/are utilized to shield it, yet the shielding element
or elements do not become a part of or are electrically connected to the respective
polysilicon resistive element in each of the embodiments in Furuya as is required by the
claims on appeal. Even if we were to consider that Furuya’s teachings of shielding a
polysilicon resistive element either above or below it or both, we do not conclude, and we
are persuaded that the artisan would not necessarily conclude, that the shielding elements
of Furuya and the polysilicon resistive elements themselves even as exemplified in
MacElwee, would have been connected in such a manner as to be the same electric
potential as claimed. We do not see how the alleged teaching value of Tasaka placing
various field effect transistors in a substrate below a resistive type channel would have
modified the above teachings of the other references to have arrived at the subject matter
of the claimed invention.
5
Page: Previous 1 2 3 4 5 6 7 8 Next
Last modified: November 3, 2007