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).

  • Patent number: 12671244
    Abstract: 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: Grant
    Filed: April 24, 2024
    Date of Patent: June 30, 2026
    Assignee: Littelfuse, Inc.
    Inventors: Cesar Martinez, Boris Golubovic, Michael Gambuzza, Guillermo Zatorre
  • Patent number: 12592557
    Abstract: 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: Grant
    Filed: April 24, 2024
    Date of Patent: March 31, 2026
    Assignee: Littelfuse, Inc.
    Inventors: Michael Gambuzza, Guillermo Zatorre, Boris Golubovic, Cesar Martinez
  • Patent number: 12456856
    Abstract: 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: Grant
    Filed: July 31, 2023
    Date of Patent: October 28, 2025
    Assignee: Littelfuse, Inc.
    Inventors: Oluwaseun Kehinde Oyewole, Cesar Martinez, Sergio Fuentes Godinez, Francois Perraud, Marco Doms, Martin Pineda
  • Publication number: 20250303350
    Abstract: 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: Application
    Filed: January 31, 2023
    Publication date: October 2, 2025
    Inventors: Damian Thorne, Mina Mehrata, Cesar Martinez
  • Publication number: 20250286361
    Abstract: 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: Application
    Filed: March 7, 2025
    Publication date: September 11, 2025
    Applicant: Littelfuse, Inc.
    Inventors: Boris Golubovic, Cesar Martinez
  • Publication number: 20250266831
    Abstract: 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: Application
    Filed: February 15, 2024
    Publication date: August 21, 2025
    Applicant: Littelfuse, Inc.
    Inventors: Daniel Egurrola, Cesar Martinez
  • Patent number: 12370916
    Abstract: 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: Grant
    Filed: October 24, 2022
    Date of Patent: July 29, 2025
    Assignee: Littelfuse, Inc.
    Inventors: Michael J. Gambuzza, Cesar Martinez, Martin Schulz
  • Publication number: 20250068438
    Abstract: 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: Application
    Filed: November 13, 2024
    Publication date: February 27, 2025
    Applicant: Intel Corporation
    Inventors: 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
  • Publication number: 20250047091
    Abstract: 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: Application
    Filed: July 31, 2023
    Publication date: February 6, 2025
    Applicant: Littelfuse, Inc.
    Inventors: OLUWASEUN KEHINDE OYEWOLE, CESAR MARTINEZ, SERGIO FUENTES GODINEZ, FRANCOIS PERRAUD, MARCO DOMS, MARTIN PINEDA
  • Patent number: 12142908
    Abstract: 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: Grant
    Filed: July 20, 2022
    Date of Patent: November 12, 2024
    Assignee: Littelfuse, Inc.
    Inventors: Martin Schulz, Cesar Martinez, Liutauras Storasta
  • Publication number: 20240364099
    Abstract: 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: Application
    Filed: April 24, 2024
    Publication date: October 31, 2024
    Applicant: Littelfuse, Inc.
    Inventors: Michael Gambuzza, Guillermo Zatorre, Boris Golubovic, Cesar Martinez
  • Publication number: 20240364100
    Abstract: 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: Application
    Filed: April 24, 2024
    Publication date: October 31, 2024
    Applicant: Littelfuse, Inc.
    Inventors: Cesar Martinez, Boris Golubovic, Michael Gambuzza, Guillermo Zatorre
  • Publication number: 20240277959
    Abstract: 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: Application
    Filed: July 12, 2022
    Publication date: August 22, 2024
    Inventors: Damian Thorne, Mina Mehrata, Cesar Martinez
  • Publication number: 20240241157
    Abstract: 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: Application
    Filed: January 16, 2024
    Publication date: July 18, 2024
    Applicant: Littelfuse, Inc.
    Inventors: Boris Golubovic, Guillermo Zatorre, Cesar Martinez
  • Publication number: 20240227609
    Abstract: 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: Application
    Filed: October 24, 2022
    Publication date: July 11, 2024
    Applicant: Littelfuse, Inc.
    Inventors: MICHAEL J. GAMBUZZA, CESAR MARTINEZ, MARTIN SCHULZ
  • Publication number: 20240131950
    Abstract: 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: Application
    Filed: October 23, 2022
    Publication date: April 25, 2024
    Applicant: Littelfuse, Inc.
    Inventors: MICHAEL J. GAMBUZZA, CESAR MARTINEZ, MARTIN SCHULZ
  • Publication number: 20230023713
    Abstract: 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: Application
    Filed: July 20, 2022
    Publication date: January 26, 2023
    Applicant: Littelfuse, Inc.
    Inventors: Martin Schulz, Cesar Martinez, Liutauras Storasta
  • Publication number: 20220097637
    Abstract: 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: Application
    Filed: September 30, 2020
    Publication date: March 31, 2022
    Applicant: Littelfuse, Inc.
    Inventors: Jay Kruger, Cesar Martinez, Xudong Fang
  • Publication number: 20030228960
    Abstract: 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: Application
    Filed: June 11, 2002
    Publication date: December 11, 2003
    Inventor: Cesar Martinez