Patents by Inventor Markus Hoidis
Markus Hoidis has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11152179Abstract: A low voltage circuit breaker is provided. The low voltage circuit breaker includes a contact system with a first contact and a second contact that are electrically connectable and disconnectable relative to one another. The first contact includes a body having a first layer and a second layer, wherein the first layer is arranged on the second layer and is configured to come in contact with the second contact for providing the electrical connection with the second contact. The first layer has a first material composition having an Ag content that is higher than an Ag content of a second material composition of the second layer. Further, the first material composition has a WC content that is lower than a WC content of the second material composition.Type: GrantFiled: March 27, 2018Date of Patent: October 19, 2021Assignee: ABB Schweiz AGInventors: Thomas Schmoelzer, Markus Hoidis, Enrico Dell Oro, Chiara Cantini, Antonello Antoniazzi, Reinhard Simon
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Publication number: 20180286620Abstract: A low voltage circuit breaker is provided. The low voltage circuit breaker includes a contact system with a first contact and a second contact that are electrically connectable and disconnectable relative to one another. The first contact includes a body having a first layer and a second layer, wherein the first layer is arranged on the second layer and is configured to come in contact with the second contact for providing the electrical connection with the second contact. The first layer has a first material composition having an Ag content that is higher than an Ag content of a second material composition of the second layer. Further, the first material composition has a WC content that is lower than a WC content of the second material composition.Type: ApplicationFiled: March 27, 2018Publication date: October 4, 2018Inventors: Thomas Schmoelzer, Markus Hoidis, Enrico Dell Oro, Chiara Cantini, Antonello Antoniazzi, Reinhard Simon
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Patent number: 8097186Abstract: A method is disclosed for producing a non-linear powder having microvaristor particles which have a non-linear current-voltage characteristic. The production steps includes mixing non-metallic particles with the microvaristor particles, thermally treating the non-metallic particles for decomposing them into electrically conductive particles and fusing the electrically conductive particles onto the microvaristor particles. Embodiments, among other things, relate to: breaking up agglomerates of the non-metallic particles during mixing; keeping the decomposition temperature below a sintering or calcination temperature of the microvaristor particles; and choosing micron-sized or nano-sized non-conductive particles for microvaristor decoration. The production method produces varistor powder with improved reproducibility of the non-linear electric current-voltage characterstic and with reduced switching fields (Es).Type: GrantFiled: April 3, 2009Date of Patent: January 17, 2012Assignee: ABB Research LtdInventors: Markus Hoidis, Lise Donzel
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Patent number: 7868732Abstract: 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.Type: GrantFiled: October 22, 2008Date of Patent: January 11, 2011Assignee: ABB Research LtdInventors: Markus Hoidis, Felix Greuter, Lise Donzel, Reto Kessler
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Publication number: 20090200521Abstract: A method is disclosed for producing a non-linear powder having microvaristor particles which have a non-linear current-voltage characteristic. The production steps includes mixing non-metallic particles with the microvaristor particles, thermally treating the non-metallic particles for decomposing them into electrically conductive particles and fusing the electrically conductive particles onto the microvaristor particles. Embodiments, among other things, relate to: breaking up agglomerates of the non-metallic particles during mixing; keeping the decomposition temperature below a sintering or calcination temperature of the microvaristor particles; and choosing micron-sized or nano-sized non-conductive particles for microvaristor decoration. The production method produces varistor powder with improved reproducibility of the non-linear electric current-voltage characterstic and with reduced switching fields (Es).Type: ApplicationFiled: April 3, 2009Publication date: August 13, 2009Applicant: ABB Research LtdInventors: Markus Hoidis, Lise Donzel
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Publication number: 20090045907Abstract: 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.Type: ApplicationFiled: October 22, 2008Publication date: February 19, 2009Applicant: ABB Research LtdInventors: Markus Hoidis, Felix Greuter, Lise Donzel, Reto Kessler
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Patent number: 6177856Abstract: On transition from the superconducting state to the normal conducting state, current limiters having a high-temperature superconductor increase their electrical resistance and thereby limit an electric current which is flowing through them. To provide electrical stabilization, the high-temperature superconductor is combined with a silver foil having a layer thickness of <50 &mgr;m to form an extensive composite conductor with good conductivity. The ratio of the layer thickness of the high-temperature superconductor to that of the silver foil should be >10. To produce this composite conductor, the silver sheet is placed on one side on a 2 mm thick MgO powder layer and, on the other side, is covered with a 600 &mgr;m thick so-called green sheet which contains a high-temperature superconductor powder and an organic binder.Type: GrantFiled: August 19, 1997Date of Patent: January 23, 2001Assignee: ABB Research Ltd.Inventors: Makan Chen, Markus Hoidis, Willi Paul