Patents by Inventor Matthew Alan Johnsen

Matthew Alan Johnsen 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).

  • Exhaust stack assemblies with acoustic attenuation features
    Patent number: 10662839
    Abstract: An exhaust stack assembly includes an exhaust stack having an internal surface that defines an interior of the exhaust stack. The exhaust stack is configured to receive exhaust gas from at least one turbomachine component and exhaust the exhaust gas to atmosphere. The exhaust gas assembly further includes a plurality of attenuation assemblies disposed in the interior, each of the plurality of attenuation assemblies including a base substrate generally oriented in the direction of flow of the exhaust gas through the interior, each of the plurality of attenuation assemblies further including a plurality of attenuation modules mounted to the base substrate. Each of the plurality of attenuation modules includes a fiber mesh. The fiber mesh is exposed to the exhaust gas in the interior.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: May 26, 2020
    Assignee: General Electric Company
    Inventors: Bradly Aaron Kippel, Matthew Alan Johnsen, Richard Lynn Loud
  • Exhaust Stack Assemblies with Acoustic Attenuation Features
    Publication number: 20190003358
    Abstract: An exhaust stack assembly includes an exhaust stack having an internal surface that defines an interior of the exhaust stack. The exhaust stack is configured to receive exhaust gas from at least one turbomachine component and exhaust the exhaust gas to atmosphere. The exhaust gas assembly further includes a plurality of attenuation assemblies disposed in the interior, each of the plurality of attenuation assemblies including a base substrate generally oriented in the direction of flow of the exhaust gas through the interior, each of the plurality of attenuation assemblies further including a plurality of attenuation modules mounted to the base substrate. Each of the plurality of attenuation modules includes a fiber mesh. The fiber mesh is exposed to the exhaust gas in the interior.
    Type: Application
    Filed: June 28, 2017
    Publication date: January 3, 2019
    Inventors: Bradly Aaron Kippel, Matthew Alan Johnsen, Richard Lynn Loud
  • MULTISTAGE AMMONIA INJECTION SYSTEM FOR EXHAUST AFTERTREATMENT SYSTEM
    Publication number: 20180355776
    Abstract: A system is provided. The system includes an exhaust aftertreatment system configured to treat emissions from a gas turbine. The exhaust aftertreatment system includes multiple ammonia injection grids arranged in multiple stages. Each ammonia injection grid of the multiple ammonia injection grids is configured to inject ammonia into an exhaust flow from the gas turbine. Each ammonia injection grid of the multiple ammonia injection grids is individually tuned to operate with a specific load condition of the gas turbine.
    Type: Application
    Filed: June 7, 2017
    Publication date: December 13, 2018
    Inventors: Bradly Aaron Kippel, Matthew Alan Johnsen, Rajesh Prabhakaran Saraswathi