Electrical resistors – Resistance value responsive to a condition – Current and/or voltage
Reexamination Certificate
2011-01-11
2011-01-11
Lee, Kyung (Department: 2833)
Electrical resistors
Resistance value responsive to a condition
Current and/or voltage
C338S021000, C361S127000, C428S402000, C428S329000
Reexamination Certificate
active
07868732
ABSTRACT:
The disclosure relates to an overvoltage protection means containing ZnO microvaristor particles for protecting electrical elements and a method to produce the means. Single microvaristor particles are placed in an arrangement having a monolayer thickness and are electrically coupled to the electrical element to protect it against overvoltages. Embodiments, among other things, relate to: 1-dimensional or 2-dimensional arrangements of microvaristor particles; placement of single microvaristors on a carrier; the carrier being planar or string-like, being structured, being a sticky tape, having fixation means for fixing the microvaristors, or having electrical coupling means. The monolayered overvoltage protection means allows very tight integration and high flexibility in shaping and adapting it to the electric or electronic element. Furthermore, reduced capacitance and hence reaction times of overvoltage protection are achieved.
REFERENCES:
patent: 4992333 (1991-02-01), Hyatt
patent: 5068634 (1991-11-01), Shrier
patent: 5183698 (1993-02-01), Stephenson et al.
patent: 6239687 (2001-05-01), Shrier et al.
patent: 6469611 (2002-10-01), Kluge-Weiss et al.
patent: 4-291325 (1992-10-01), None
patent: 4-291326 (1992-10-01), None
patent: WO 99/56290 (1999-11-01), None
F. Greuter et al., “Microvaristors: Functional Fillers for Novel Electroceramic Composites,” Journal of Electroceramics, Jul. 2004, pp. 739-744, vol. 13, No. 1-3, Kluwer Academic Publishers, The Netherlands.
International Search Report for corresponding PCT Application No. PCT/CH2006/000222, completed Sep. 8, 2006.
Written Opinion of the International Searching Authority for corresponding PCT Application No. PCT/CH2006/000222, completed Sep. 8, 2006.
International Preliminary Report on Patentability for corresponding PCT Application No. PCT/CH2006/000222, completed Apr. 3, 2008.
Donzel Lise
Greuter Felix
Hoidis Markus
Kessler Reto
ABB Research Ltd
Buchanan & Ingersoll & Rooney PC
Lee Kyung
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