Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate
2006-03-28
2006-03-28
Dougherty, Thomas M. (Department: 2834)
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
C310S360000, C310S31300R
Reexamination Certificate
active
07019444
ABSTRACT:
A method of adjusting the temperature properties of piezoelectric devices and oscillation circuits which have a third-order function temperature property and the point of inflection of the third-order function temperature property outside the normal usage temperature range. The local maximum point or local minimum point temperature located in the normal temperature range is regarded as the peak temperature of the apparent second-order function temperature property, and the peak temperature is adjusted to the optimum value in the normal temperature range by rotating the temperature property around the point of inflection located outside the normal temperature range by adjusting the first-order coefficient.
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Imai Nobuyuki
Kobayashi Yoshihiro
Dougherty Thomas M.
Harness & Dickey & Pierce P.L.C.
Seiko Epson Corporation
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