Appeal No. 1997-4442
Application 08/353,040
DECISION ON APPEAL
This is a decision on appeal under 35 U.S.C. § 134 from
the Examiner's refusal to allow claims 2-6.
We reverse.
BACKGROUND
The disclosed invention relates to precision resistors
having accurate and readily reproducible values of resistance
and temperature coefficient of resistance ("TCR").
Claim 6 is reproduced below.2
6. A resistor comprising an electrically insulating
substrate having two connections which are electrically
interconnected by means of a resistance path, said
resistance path comprising a first resistance alloy
portion with a positive TCR and a second resistance alloy
portion with a negative TCR, and wherein the difference
in the resistance values between first and second alloy
portions is maximally a factor of 10 and the difference
in the absolute values of the TCR between first and
second alloy portions is maximally a factor of 10, the
first and second portions both being trimmed so that the
resistor has a desired resistance value and a desired
TCR.
As noted by the Examiner, "TRC" in claim 6 (four2
places) in the amendment after final rejection (Paper No. 13)
filed October 29, 1996, and in the appendix to the brief,
should be "TCR" to be consistent with claim 6 as originally
presented in the amendment (Paper No. 10) filed
February 26, 1996. We reproduce the claim with the
correction.
- 2 -
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Next
Last modified: November 3, 2007