Patents by Inventor Cesar Martinez
Cesar Martinez 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: 12671244Abstract: Disclosed is a control circuit, for use in a solid state battery disconnect and protection system, wherein control circuit includes a high-voltage switch coupled between an electric battery and a DC link capacitor of an electric vehicle, wherein the electric vehicle is powered by the electric battery, and a control block. The control block may by operable to monitor a rate of change and a value of a current on a connection to the high-voltage switch, determine whether the rate of change of the current exceeds a first predetermined threshold and determine whether the value of the current exceeds a second predetermined threshold, and determine an overcurrent fault exists in the case that the first or second predetermined threshold is exceeded.Type: GrantFiled: April 24, 2024Date of Patent: June 30, 2026Assignee: Littelfuse, Inc.Inventors: Cesar Martinez, Boris Golubovic, Michael Gambuzza, Guillermo Zatorre
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Patent number: 12592557Abstract: Disclosed is an adaptive pre-charge control circuit, for use in a solid state battery disconnect and protection system, wherein the adaptive pre-charge control circuit includes a high-voltage switch coupled between an electric battery and a DC link capacitor of an electric vehicle, and wherein the electric vehicle is powered by the electric battery. The control circuit may be operable to issue a pulse width modulated (PWM) signal to generate a current profile wherein every other pulse exceeds a predefined limit, monitor, during pre-charging, the current profile, and to determine an overcurrent fault exists in the case that two consecutive pulses exceed the predefined limit.Type: GrantFiled: April 24, 2024Date of Patent: March 31, 2026Assignee: Littelfuse, Inc.Inventors: Michael Gambuzza, Guillermo Zatorre, Boris Golubovic, Cesar Martinez
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Patent number: 12456856Abstract: A semiconductor device protection arrangement. The semiconductor device protection arrangement may include a semiconductor chip; a controller, coupled to the power semiconductor chip; and a temperature sensor, disposed in thermal contact with the semiconductor chip, where the temperature sensor includes a positive temperature indicator (PTI) component.Type: GrantFiled: July 31, 2023Date of Patent: October 28, 2025Assignee: Littelfuse, Inc.Inventors: Oluwaseun Kehinde Oyewole, Cesar Martinez, Sergio Fuentes Godinez, Francois Perraud, Marco Doms, Martin Pineda
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Publication number: 20250303350Abstract: Methods and systems of collecting an anaesthetic agent from a collection vessel are described herein. The systems include a fluid storage tank and a collection vessel housing an adsorbent material for adsorbing the anaesthetic agent. The collection vessel is configured to receive the heated fluid from the fluid storage tank, the heated fluid having a temperature and a pressure sufficient to thermally desorb the anaesthetic agent from the adsorbent material. The system also includes a heat exchanger configured to receive an outlet stream from the collection vessel comprising the anaesthetic agent and cool the outlet stream to a temperature below a threshold temperature to produce a liquid stream comprising the anaesthetic agent. The system also includes an accumulator configured to receive the liquid stream and separate the liquid stream into a waste stream and a collection stream, the collection stream comprising the anaesthetic agent.Type: ApplicationFiled: January 31, 2023Publication date: October 2, 2025Inventors: Damian Thorne, Mina Mehrata, Cesar Martinez
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Publication number: 20250286361Abstract: A circuit protection apparatus. The apparatus includes a solid-state disconnect electronic component, and a sensor coupled to the solid-state disconnect electronic component. The solid-state disconnect electronic component is configured to disconnect an operational electronic component and a power source upon the sensor detecting a fault condition.Type: ApplicationFiled: March 7, 2025Publication date: September 11, 2025Applicant: Littelfuse, Inc.Inventors: Boris Golubovic, Cesar Martinez
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Publication number: 20250266831Abstract: An isolation circuit arrangement may include an isolation barrier and may be configured to receive one or more input signals on a low voltage side and deliver one or more output signals on a high voltage side. The isolation barrier may include a first capacitor, arranged along a first input line, a second capacitor arranged along a second input line, electrically parallel to the first capacitor, and a first inductor having a first end that is coupled to a first electrode of the first capacitor and having a second end that is coupled to a first electrode of the second capacitor. The isolation barrier may further include a center tap, connected to the first inductor, and a second inductor that is inductively coupled to the first inductor and is arranged with a first output end and a second output end on a high voltage side of the isolation circuit arrangement.Type: ApplicationFiled: February 15, 2024Publication date: August 21, 2025Applicant: Littelfuse, Inc.Inventors: Daniel Egurrola, Cesar Martinez
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Patent number: 12370916Abstract: An adaptive pre-charge control circuit includes include a high-voltage switch and a control circuit. The high-voltage switch controls the flow of current between an electric battery and a DC link capacitor, the electric battery to supply power to an electric vehicle. The DC link capacitor is made up of a sum of individual input capacitors of multiple subunits within an electric vehicle. The control circuit sends a PWM signal to the high-voltage switch based on a difference between an electric battery voltage and a DC link capacitor voltage.Type: GrantFiled: October 24, 2022Date of Patent: July 29, 2025Assignee: Littelfuse, Inc.Inventors: Michael J. Gambuzza, Cesar Martinez, Martin Schulz
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Publication number: 20250068438Abstract: Described herein are technique to enable the autonomous generation of configurations for a network environment, including but not limited to an edge network of a datacenter. Additional embodiments include prompt-based generation of network and device configurations and neural network based systems for adaptive network management.Type: ApplicationFiled: November 13, 2024Publication date: February 27, 2025Applicant: Intel CorporationInventors: Mateo Guzman, Marcos Carranza, Daniel Biederman, Chihjen Chang, Jeremy Petsinger, Yadong Li, Mitu Aggarwal, Suyog Kulkarni, Mariano Ortega de Mues, Rajesh Poornachandran, Cesar Martinez, Mats Agerstam, Francesc Guim Bernat, Karthik Kumar, Usharani Ayyalasomayajula
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Publication number: 20250047091Abstract: A semiconductor device protection arrangement. The semiconductor device protection arrangement may include a semiconductor chip; a controller, coupled to the power semiconductor chip; and a temperature sensor, disposed in thermal contact with the semiconductor chip, where the temperature sensor includes a positive temperature indicator (PTI) component.Type: ApplicationFiled: July 31, 2023Publication date: February 6, 2025Applicant: Littelfuse, Inc.Inventors: OLUWASEUN KEHINDE OYEWOLE, CESAR MARTINEZ, SERGIO FUENTES GODINEZ, FRANCOIS PERRAUD, MARCO DOMS, MARTIN PINEDA
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Patent number: 12142908Abstract: Circuitry and techniques for providing a bidirectional switch in devices for overcurrent protection and voltage protection are disclosed herein. In one embodiment, a circuit may include a first reverse-blocking insulating gate bipolar transistor (IGBT), having a first gate terminal, first collector terminal and a first emitter terminal. The circuit may include a second reverse-blocking IGBT, having a second gate terminal, a second collector terminal, electrically coupled to the first emitter terminal, and a second emitter terminal, electrically coupled to the first collector terminal. As such the first IGBT and the second IGBT may define a first current path, extending from the first collector to the second emitter; and a switch control circuit, coupled to send a control signal to at least one of: the first gate terminal and the second gate terminal, during an overcurrent event.Type: GrantFiled: July 20, 2022Date of Patent: November 12, 2024Assignee: Littelfuse, Inc.Inventors: Martin Schulz, Cesar Martinez, Liutauras Storasta
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Publication number: 20240364099Abstract: Disclosed is an adaptive pre-charge control circuit, for use in a solid state battery disconnect and protection system, wherein the adaptive pre-charge control circuit includes a high-voltage switch coupled between an electric battery and a DC link capacitor of an electric vehicle, and wherein the electric vehicle is powered by the electric battery. The control circuit may be operable to issue a pulse width modulated (PWM) signal to generate a current profile wherein every other pulse exceeds a predefined limit, monitor, during pre-charging, the current profile, and to determine an overcurrent fault exists in the case that two consecutive pulses exceed the predefined limit.Type: ApplicationFiled: April 24, 2024Publication date: October 31, 2024Applicant: Littelfuse, Inc.Inventors: Michael Gambuzza, Guillermo Zatorre, Boris Golubovic, Cesar Martinez
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Publication number: 20240364100Abstract: Disclosed is a control circuit, for use in a solid state battery disconnect and protection system, wherein control circuit includes a high-voltage switch coupled between an electric battery and a DC link capacitor of an electric vehicle, wherein the electric vehicle is powered by the electric battery, and a control block. The control block may by operable to monitor a rate of change and a value of a current on a connection to the high-voltage switch, determine whether the rate of change of the current exceeds a first predetermined threshold and determine whether the value of the current exceeds a second predetermined threshold, and determine an overcurrent fault exists in the case that the first or second predetermined threshold is exceeded.Type: ApplicationFiled: April 24, 2024Publication date: October 31, 2024Applicant: Littelfuse, Inc.Inventors: Cesar Martinez, Boris Golubovic, Michael Gambuzza, Guillermo Zatorre
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Publication number: 20240277959Abstract: Systems methods for collecting an anaesthetic agent are described herein. The systems include at least one anaesthetic gas scavenging system (AGSS) for receiving exhaust gas from at least one source, the exhaust gas including the anaesthetic agent to be collected. Each AGSS comprises at least one power source for providing suction of the exhaust gas from the plurality of sources. The systems also include a collection system for recovering the anaesthetic agent from the exhaust gas. The collection system includes a compressor for compressing the exhaust gas from the AGSS to increase a pressure of the exhaust gas and at least one adsorbent tank configured to receive the compressed exhaust gas from the compressor and adsorb the anaesthetic agent from the compressed exhaust gas.Type: ApplicationFiled: July 12, 2022Publication date: August 22, 2024Inventors: Damian Thorne, Mina Mehrata, Cesar Martinez
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Publication number: 20240241157Abstract: Provided herein are approaches for improving performance of current sensors. In some embodiments, an apparatus may include a current sensor coupled to a busbar, the current sensor comprising a coil, wherein a current flowing through the busbar generates a first magnetic field detectable by the current sensor, wherein the coil is operable to generate a second magnetic field, and wherein by orienting the coil, the current sensor will receive part of the second magnetic field, superposed to the first magnetic field.Type: ApplicationFiled: January 16, 2024Publication date: July 18, 2024Applicant: Littelfuse, Inc.Inventors: Boris Golubovic, Guillermo Zatorre, Cesar Martinez
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Publication number: 20240227609Abstract: An adaptive pre-charge control circuit includes include a high-voltage switch and a control circuit. The high-voltage switch controls the flow of current between an electric battery and a DC link capacitor, the electric battery to supply power to an electric vehicle. The DC link capacitor is made up of a sum of individual input capacitors of multiple subunits within an electric vehicle. The control circuit sends a PWM signal to the high-voltage switch based on a difference between an electric battery voltage and a DC link capacitor voltage.Type: ApplicationFiled: October 24, 2022Publication date: July 11, 2024Applicant: Littelfuse, Inc.Inventors: MICHAEL J. GAMBUZZA, CESAR MARTINEZ, MARTIN SCHULZ
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Publication number: 20240131950Abstract: An adaptive pre-charge control circuit includes include a high-voltage switch and a control circuit. The high-voltage switch controls the flow of current between an electric battery and a DC link capacitor, the electric battery to supply power to an electric vehicle. The DC link capacitor is made up of a sum of individual input capacitors of multiple subunits within an electric vehicle. The control circuit sends a PWM signal to the high-voltage switch based on a difference between an electric battery voltage and a DC link capacitor voltage.Type: ApplicationFiled: October 23, 2022Publication date: April 25, 2024Applicant: Littelfuse, Inc.Inventors: MICHAEL J. GAMBUZZA, CESAR MARTINEZ, MARTIN SCHULZ
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Publication number: 20230023713Abstract: Circuitry and techniques for providing a bidirectional switch in devices for overcurrent protection and voltage protection are disclosed herein. In one embodiment, a circuit may include a first reverse-blocking insulating gate bipolar transistor (IGBT), having a first gate terminal, first collector terminal and a first emitter terminal. The circuit may include a second reverse-blocking IGBT, having a second gate terminal, a second collector terminal, electrically coupled to the first emitter terminal, and a second emitter terminal, electrically coupled to the first collector terminal. As such the first IGBT and the second IGBT may define a first current path, extending from the first collector to the second emitter; and a switch control circuit, coupled to send a control signal to at least one of: the first gate terminal and the second gate terminal, during an overcurrent event.Type: ApplicationFiled: July 20, 2022Publication date: January 26, 2023Applicant: Littelfuse, Inc.Inventors: Martin Schulz, Cesar Martinez, Liutauras Storasta
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Publication number: 20220097637Abstract: An occupancy detection system consists of a master controller for a series of joined receivers consisting of reader modules and transponder modules in close proximity to one another. The reader modules are able to both send power to the transponder modules wirelessly and receive signals from the transponder modules, where the transponder modules are sending signals based on information received from buckle sensors, occupancy sensors, or both. The transponder modules, set in each seat of the vehicle, will get the latch/unlatch signals from the buckles, and send this information back through the reader modules to the main controller. The main controller will interface with the vehicle to provide user interface notifications.Type: ApplicationFiled: September 30, 2020Publication date: March 31, 2022Applicant: Littelfuse, Inc.Inventors: Jay Kruger, Cesar Martinez, Xudong Fang
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Publication number: 20030228960Abstract: A weight training device having a weight disk with a front face, a back face and a peripheral edge. Five fingers can be inserted into at least two finger cavities permitting a user to grip said weight disk in a comfortable manner for lifting purposes. The weight disk preferably has five finger cavities that extend through the thickness of the weight disk. In order to perform exercises the user grips the weight disk with his/her hand and lifts the disk into different arm positions. The disk adds weight to each of the movements strengthening the arm, hand and shoulder.Type: ApplicationFiled: June 11, 2002Publication date: December 11, 2003Inventor: Cesar Martinez