Wotruba
Berhard Wotruba, Padova IT
Patent application number | Description | Published |
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20080224547 | Reverse voltage protected integrated circuit arrangement - An integrated circuit arrangement is disclosed which comprises a semiconductor body having a substrate and at least one substrate terminal, at least one semiconductor component integrated in the semiconductor body and being connected between a first supply terminal providing a first supply potential and a second supply terminal providing a second supply potential, and switching means adapted for connecting at least one of said substrate terminals to either the first or to the second supply terminal dependent on which supply terminal provides the lower supply potential. | 09-18-2008 |
Bernhard Wotruba, Padua IT
Patent application number | Description | Published |
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20080225454 | Reverse Voltage Protected Integrated Circuit Arrangement for Multiple Supply Lines - An integrated circuit arrangement includes a semiconductor body having a substrate and at least one substrate terminal. At least one semiconductor component is integrated in the semiconductor body and is connected between a first supply terminal and a second supply terminal. The first supply potential is higher than the second supply potential during normal operation of the semiconductor component and the first supply potential is lower than the second supply potential during reverse voltage operation of the semiconductor component. A switch is adapted to couple at least one of the substrate terminals to the first supply terminal during reverse voltage operation and to the second supply terminal during normal operation. | 09-18-2008 |
Hermann Wotruba, Aachen DE
Patent application number | Description | Published |
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20150102141 | METHOD FOR REDUCING THE LOSSES OF VALUABLE SUBSTANCES IN MINERAL PROCESSING - The invention relates to a method for reducing the losses of valuable substances in mineral processing, wherein a mineral mixture, dry or suspended, has a grain fraction with a tailings portion and a superficial valuable material portion after a first separation stage, and the tailings portion quantitatively exceeds the valuable material portion, the mineral mixture being suspended, insofar as it is not already a suspension, for the agglomeration of grains of the grain fraction with the valuable material portion, and a substantially hydrophobic agent with a content of anionic or cationic amphiphilic molecules is added to the suspended mineral mixture in order to wet the surface of the valuable substance portion to form agglomeration bridges between the valuable material portions of the grains, wherein the mineral mixture is routed in a solution saturated with the valuable material portion and the tailings to a wet separation stage for classification into a fraction richer in valuable material and a fraction less rich in valuable material, wherein separation in the wet separation stage is performed with the aid of a liquid film flow, the fraction richer in valuable material discharged from the wet separation stage being wet-ground, and the wet-ground fraction being fed to a further classification stage. | 04-16-2015 |
Joel A. Wotruba, Smyrna, TN US
Patent application number | Description | Published |
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20150306689 | TAP TOOL ASSEMBLY - A tap tool assembly includes a tap, a retaining member and a sleeve. The tap has a thread cutting section and a shaft section. The retaining member is fixed to the shaft section of the tap adjacent to a first end of the thread cutting section. The sleeve has a central bore extending therethrough. A surface of the sleeve defines the central bore and has a shoulder. The sleeve is coupled to the shaft section of the tap for movement between a first position completely covering the thread cutting section and a second position exposing at least a portion of the thread cutting section, with the sleeve being biased to move toward the first position. | 10-29-2015 |