Patents by Inventor Eric B. Gach
Eric B. Gach 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: 12683599Abstract: A system for prognosis and control of a power module includes a gate driver circuit and a controller circuit. The gate driver circuit drives a target gate node of a target power transistor in response to a pulse width modulation signal, measures a target gate voltage, switches a desaturation signal in response to the target power transistor switching between an off state and an on state, measures a target transistor voltage, and measures a target transistor current. The controller circuit modulates the pulse width modulation signal to increase the target gate voltage, determines a target threshold voltage as the target gate voltage in response to the desaturation signal switching states, determines a target on-resistance based on the target transistor voltage and the target transistor current, and controls the target power transistor based on the target threshold voltage and the target on-resistance.Type: GrantFiled: March 15, 2024Date of Patent: July 14, 2026Assignee: GM Global Technology Operations LLCInventors: Yilun Luo, Benjamin S. Ngu, Chandra S. Namuduri, Mohammad N. Anwar, Eric B. Gach, Abir Chatterjee, Rashmi Prasad, Khorshed Mohammed Alam
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Publication number: 20250293679Abstract: A system for prognosis and control of a power module includes a gate driver circuit and a controller circuit. The gate driver circuit drives a target gate node of a target power transistor in response to a pulse width modulation signal, measures a target gate voltage, switches a desaturation signal in response to the target power transistor switching between an off state and an on state, measures a target transistor voltage, and measures a target transistor current. The controller circuit modulates the pulse width modulation signal to increase the target gate voltage, determines a target threshold voltage as the target gate voltage in response to the desaturation signal switching states, determines a target on-resistance based on the target transistor voltage and the target transistor current, and controls the target power transistor based on the target threshold voltage and the target on-resistance.Type: ApplicationFiled: March 15, 2024Publication date: September 18, 2025Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Yilun Luo, Benjamin S. Ngu, Chandra S. Namuduri, Mohammad N. Anwar, Eric B. Gach, Abir Chatterjee, Rashmi Prasad, Khorshed Mohammed Alam
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Patent number: 12328078Abstract: A system and method for receiving, at a multi-chip power module, multiple electronic control signals by one or more semiconductor devices of a first device type configured in parallel to one or more semiconductor devices of a second device type. The one or more semiconductor devices of the first device type and the one or more semiconductor devices of the second device type form a plurality of functional switches. The functional switches independently change states, in response to the plurality of electronic control signals. The one or more semiconductor devices of the first device type are configured to be electrically controlled for use independently and de-coupled, or in parallel, with the one or more semiconductor devices of the second device type.Type: GrantFiled: March 12, 2024Date of Patent: June 10, 2025Assignee: GM Global Technology Operations LLCInventors: Benjamin S. Ngu, Brian A. Welchko, Chandra S. Namuduri, Yilun Luo, Ioan Suciu, Eric B. Gach, Rashmi Prasad, Luciano N. Di Perna, Khorshed Mohammed Alam
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Publication number: 20250112580Abstract: A slew rate controllable system for powering an electric machine. The system may include a plurality of power switches operable for converting a direct current (DC) input into an alternating current (AC) output suitable for electrically powering the electric machine. The system may include a gate drive system operable for controlling a slew rate associated with transitioning the switches between opened and closed states.Type: ApplicationFiled: September 28, 2023Publication date: April 3, 2025Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Yilun Luo, Khorshed Mohammed Alam, Eric B. Gach, Chandra S. Namuduri, Rashmi Prasad, Mohammad F. Momen
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Publication number: 20240022946Abstract: A slew rate controllable system for powering an electric machine. The system may include a plurality of power transistors operable for converting a direct current (DC) input into an alternating current (AC) output suitable for electrically powering the electric machine. The system may further include a gate drive system operable for controlling a slew rate associated with transitioning the power transistors between the opened and closed states.Type: ApplicationFiled: September 28, 2023Publication date: January 18, 2024Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Yilun Luo, Khorshed Mohammed Alam, Eric B. Gach, Hong Nguyen, Chandra S. Namuduri, Rashmi Prasad, Junghoon Kim
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Publication number: 20200143609Abstract: A power supply diagnostics system is disclosed. The power supply diagnostics system includes a first direct current to direct current (DC/DC) control module configured to change an output of a first variable DC/DC converter and a second DC/DC control module configured to change an output of a second variable DC/DC converter. The first and second variable DC/DC converters are connected to a load. The power supply diagnostics system also includes: a first timer module; a second timer module; a first voltage comparison module configured to (i) store a voltage measured at the load based on an output of the first timer module and (ii) begin sampling a plurality of voltages measured at the load base on an output of the second timer module; and a DC/DC status module configured to change an operating parameter of a vehicle based on a comparison of the voltage and the plurality of voltages.Type: ApplicationFiled: November 7, 2018Publication date: May 7, 2020Applicant: GM Global Technology Operations LLCInventors: Vijay A. NEELAKANTAN, Richard A. KULAS, Aubrey W. DOWNS, JR., Eric B. GACH, Ligang ZHANG
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Publication number: 20090278554Abstract: A system for detecting a container or contents of the container. The system includes a diffuser for retaining the container, where the container is configured to hold an active material therein and may include a wick extending therefrom. The system further includes a sensor positioned to detect, for example, the container retained in the diffuser and/or the contents of the container retained in the diffuser.Type: ApplicationFiled: July 14, 2009Publication date: November 12, 2009Inventors: Imre J. Dancs, Jeffrey L. Harwig, John A. Heathcock, Dennis W. Gruber, Eric B. Gach
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Patent number: 7589340Abstract: A system for detecting a container or contents of the container. The system includes a diffuser for retaining the container, where the container is configured to hold an active material therein and may include a wick extending therefrom. The system further includes a sensor positioned to detect, for example, the container retained in the diffuser and/or the contents of the container retained in the diffuser.Type: GrantFiled: March 31, 2005Date of Patent: September 15, 2009Assignee: S.C. Johnson & Son, Inc.Inventors: Imre J. Dancs, Jeffrey L. Harwig, John A. Heathcock, Dennis W. Gruber, Eric B. Gach
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Patent number: 6415957Abstract: Apparatus for dispensing a heated gel includes a housing having a recess therein, a coupling assembly disposed in the housing and adapted to retain a pressurized gel container in the recess and a heater assembly disposed in the housing. The heater assembly includes a heater selectively operable to develop heat and a heat exchanger in heat transfer relationship with the heater and having a chamber for receiving a quantity of gel. The heater assembly further includes a first valve in fluid communication with a first portion of the chamber and operable to expose the chamber to pressurized gel and a second valve in fluid communication with a second portion of the chamber and operable to allow dispensing of gel without substantial foaming.Type: GrantFiled: November 27, 2000Date of Patent: July 9, 2002Assignee: S. C. Johnson & Son, Inc.Inventors: Kenneth W. Michaels, John A. Heathcock, Edward J. Kunesh, David P. Mather, Scott W. Demarest, Darren K. Robling, Thomas J. Szymczak, Clifford S. Eagleton, Eric B. Gach, Paul J. Golko, Dennis W. Gruber
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Publication number: 20020074349Abstract: A shave gel is disposed within a container having a container body defining a space for storage of the product and a valve in fluid communication with the space. A hollow stem is disposed in fluid communication with the valve and includes an exterior end that has at least one side opening therethrough. The valve is actuable to dispense product through the side opening.Type: ApplicationFiled: November 27, 2001Publication date: June 20, 2002Inventors: Kenneth W. Michaels, John A. Heathcock, Edward J. Kunesh, David P. Mather, Scott W. Demarest, Darren K. Robling, Thomas J. Szymczak, Clifford S. Eagleton, Eric B. Gach, Paul J. Golko, Dennis W. Gruber