Patents by Inventor Derek Fong

Derek Fong 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: 11976821
    Abstract: A control system for a fuel-burning appliance such as a wood or pellet burning stove may include a particulate matter sensor. The control system may also include an ignition system to ignite an ignition charge of ignitable fuel. A processor controls the operation of the functional components of the appliance to maintain operating conditions within pre-determined parameters.
    Type: Grant
    Filed: March 5, 2021
    Date of Patent: May 7, 2024
    Assignee: Wolf Steel Ltd.
    Inventors: Paul Hodges, Derek Fong, Wonmyung Seo
  • Patent number: 11859826
    Abstract: A termination cap for a direct vent appliance. The termination cap comprises an outer housing, an exhaust housing nested within the outer housing and a trim plate. The trim plate has an exhaust gas opening and combustion air openings and is securable to the exhaust body to allow exhaust gas to flow through the exhaust gas opening. At least a portion of the combustion air drawn through the combustion air openings is heated and exits through the top or upper portion of the trim plate to form an air wash along the wall surface within which the cap is mounted.
    Type: Grant
    Filed: March 5, 2020
    Date of Patent: January 2, 2024
    Assignee: Wolf Steel Ltd.
    Inventors: Derek Fong, Paul Hodges, Ciprian Gherghel, David Shulver, Cliff Lilley
  • Publication number: 20210278087
    Abstract: A control system for a fuel-burning appliance such as a wood or pellet burning stove is disclosed. The control system may include a particulate matter sensor. The control system may also include an ignition system to ignite an ignition charge of ignitable fuel. A processor controls the operation of the functional components of the appliance to maintain operating conditions within pre-determined parameters.
    Type: Application
    Filed: March 5, 2021
    Publication date: September 9, 2021
    Inventors: Paul Hodges, Derek Fong, Wonmyung Seo
  • Publication number: 20200284436
    Abstract: A termination cap for a direct vent appliance. The termination cap comprises a an outer housing, an exhaust housing nested within the outer housing and a trim plate. The trim plate has an exhaust gas opening and combustion air openings and is securable to the exhaust body to allow exhaust gas to flow through the exhaust gas opening. At least a portion of the combustion air drawn through the combustion air openings is heated and exits through the top or upper portion of the trim plate to form an air wash along the wall surface within which the cap is mounted.
    Type: Application
    Filed: March 5, 2020
    Publication date: September 10, 2020
    Inventors: Derek Fong, Paul Hodges, Ciprian Gherghel, David Shulver, Cliff Lilley