Zevenbergen
Gary A. Zevenbergen, Arvada, CO US
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20100231399 | Ground Potential Rise Monitor - A device and method for detecting ground potential rise (GPR) comprising positioning a first electrode and a second electrode at a distance from each other into the earth. The voltage of the first electrode and second electrode is attenuated by an attenuation factor creating an attenuated voltage. The true RMS voltage of the attenuated voltage is determined creating an attenuated true RMS voltage. The attenuated true RMS voltage is then multiplied by the attenuation factor creating a calculated true RMS voltage. If the calculated true RMS voltage is greater than a first predetermined voltage threshold, a first alarm is enabled at a local location. | 09-16-2010 |
John Franciscus Zevenbergen, Weesp NL
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20100024931 | PYROTECHNIC COLOUR COMPOSITION - The invention provides a chlorine-containing pyrotechnic composition which comprises a binder, an oxidator, a pyrotechnic fuel, and a colorant comprising a metal salt of 5-aminotetrazole. The invention further relates to a firework article comprising such a pyrotechnic composition. In addition, the invention provides a method for preparing said colorant | 02-04-2010 |
John Franeiscus Zevenbergen, Weesp NL
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20100024932 | LOW-SMOKE PYROTECHNIC COMPOSITION FOR PRODUCING COLORED FLAMES - The present invention provides a chlorine-containing pyrotechnic composition which is substantially free of per-chlorate which composition comprises a nitrocellulose which is derived from a fibrous nitrocellulose starting material that has at least partially been dissolved during the process of preparing the pyrotechnic composition, and a colorant. The invention further provides a firework article comprising said pyrotechnic composition, and a method for preparing the same. | 02-04-2010 |
Marcel Zevenbergen, Rotterdam NL
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20120247978 | ELECTROCHEMICAL ETHYLENE SENSOR AND METHOD FOR MONITORING ETHYLENE - An electrochemical ethylene sensor and method for ethylene sensing are disclosed. In one aspect, an electrochemical ethylene sensor includes a working electrode and a counter electrode on an electrically insulating substrate. An ionic liquid layer covers the working electrode and counter electrode. In one method, a voltage is applied to the working electrode which is equal to or lower than the voltage required for the onset of oxidation of the material of the working electrode, for example, in the range spanning 700 mV before the onset of oxidation of the material of the working electrode. | 10-04-2012 |
20140012114 | Monitoring of Fluid Content - This application describes methods and apparatus for monitoring of fluid content that are suitable for in-situ, real time and/or continuous monitoring, especially of bodily fluids and in particular the content of sweat. The application also describes fabrication of such an apparatus. The apparatus comprises a multilayer structure comprising at least two electrode layers for detection of fluid content separated by at least one insulating layer. The multilayer structure defines at least one flow channel which provides a flow path for continuous flow of fluid in use, and the electrode layers form part of the sidewall of the flow channel(s). The flow channel(s) may run in a direction substantially perpendicular to the layers. The electrode layers may employ electrochemical detection and may comprise a reference electrode and an ion-sensitive electrode. The apparatus may be fabricated using various printing or deposition techniques. | 01-09-2014 |
Marcel Arie Günther Zevenbergen, Rotterdam NL
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20150021202 | Device and Method for Electrochemical Gas Sensing - The disclosure relates to a device for electrochemical gas sensing, comprising a plurality of different electrodes and a freestanding electrolyte film covering said electrodes, wherein at least two of those electrodes present a different distance from its top surface to the electrolyte film surface. The disclosure also relates to an electronic system and a method for electrochemical gas sensing. | 01-22-2015 |
Martin Jaap Zevenbergen, Ede (gld) NL
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20080281088 | Method And Device For The Isolation Of Nucleic Acid From Nucleic Acid-Comprising Material - Method for the isolation of nucleic acid from nucleic acid comprising material, comprising the following steps: a) provision of a container suitable for the isolation of nucleic acid; b) introducing the nucleic acid comprising material and a desiccant into the container; c) drying the nucleic acid comprising material in the container; d) subjecting the nucleic acid comprising material in the container to a method for the isolation of nucleic acid from the nucleic acid comprising material; e) isolation of nucleic acid. | 11-13-2008 |
Reid E. Zevenbergen, Carrollton, TX US
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20130233567 | LOCKING SAFETY JOINT FOR USE IN A SUBTERRANEAN WELL - A safety joint for use in a subterranean well can include separable portions which, when separated, disconnect sections of a tubular string. Elongation of the safety joint can be permitted while longitudinal compression of the safety joint is prevented. A method of activating a safety joint in a subterranean well can include providing the safety joint with portions having end connectors which interconnect the safety joint between sections of a tubular string, permitting elongation of the safety joint, thereby facilitating disconnection of the tubular string sections, and then preventing longitudinal compression of the safety joint. Another safety joint can include separable portions, and a locking device which permits relative displacement between a generally tubular mandrel and a component of the safety joint in one direction, and prevents relative displacement between the mandrel and the component in an opposite direction. | 09-12-2013 |
20130341043 | LOCKING SAFETY JOINT FOR USE IN A SUBTERRANEAN WELL - A safety joint for use in a subterranean well can include separable portions which, when separated, disconnect sections of a tubular string. Elongation of the safety joint can be permitted while longitudinal compression of the safety joint is prevented. A method of activating a safety joint in a subterranean well can include providing the safety joint with portions having end connectors which interconnect the safety joint between sections of a tubular string, permitting elongation of the safety joint, thereby facilitating disconnection of the tubular string sections, and then preventing longitudinal compression of the safety joint. Another safety joint can include separable portions, and a locking device which permits relative displacement between a generally tubular mandrel and a component of the safety joint in one direction, and prevents relative displacement between the mandrel and the component in an opposite direction. | 12-26-2013 |
Reid Elliott Zevenbergen, Carrollton, TX US
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20150101790 | TIME DELAYED SECONDARY RETENTION MECHANISM FOR SAFETY JOINT IN A WELLBORE - Certain aspects and features of the present invention are directed to a safety joint that can be disposed in a wellbore through a fluid-producing formation. The safety joint can include a body configured to be disposed in the wellbore, a primary retention mechanism, a secondary retention mechanism, and a time delay mechanism. The primary retention mechanism can be coupled to the body and can prevent the actuation of the safety joint. The secondary retention mechanism can be coupled to the body and can prevent the actuation of the safety joint in response to the primary retention mechanism allowing the actuation of the safety joint. The time delay mechanism can generate a time delay between the primary retention mechanism allowing the actuation of the safety joint and the secondary retention mechanism preventing the actuation of the safety joint. | 04-16-2015 |