Patents by Inventor Frederick Marshall McFarland

Frederick Marshall McFarland 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).

  • Magnet wire with flexible corona resistant insulation
    Patent number: 11728067
    Abstract: Magnet wire with flexible corona resistant enamel insulation may include a conductor and a multi-layer insulation system formed around the conductor. The insulation system may include a basecoat formed from first polymeric enamel insulation, a midcoat formed from second polymeric enamel insulation, and a topcoat formed from third polymeric enamel insulation. The midcoat may include a filler containing silica dioxide and chromium oxide dispersed in a base polyamideimide material. Additionally, the magnet wire may exhibit few or no cracks in the topcoat when the wire is bent 180 degrees around a 4 mm mandrel.
    Type: Grant
    Filed: April 28, 2022
    Date of Patent: August 15, 2023
    Assignee: Essex Furukawa Magnet Wire USA LLC
    Inventors: Tamanna Ferdous McFarland, James J. Connell, Allen Roe Guisinger, Allan R. Knerr, Matthew Leach, Frederick Marshall McFarland, Mohammad Mazhar Said
  • Magnet wire with corona resistant polyimide insulation
    Patent number: 11728068
    Abstract: Magnet wire with corona resistant enamel insulation may include a conductor and a multi-layer insulation system formed around the conductor. The insulation system may include a basecoat formed from a first polymeric enamel insulation. A midcoat formed from a second polymeric enamel insulation may be formed around the basecoat, and the second polymeric enamel insulation may include a filler dispersed in a base polyimide material. The filler may include between 20 percent and 80 percent by weight of silica dioxide and between 20 and 80 percent by weight of titanium dioxide. Additionally, the insulation system may include a topcoat formed from third polymeric enamel insulation formed around the midcoat.
    Type: Grant
    Filed: April 28, 2022
    Date of Patent: August 15, 2023
    Assignee: Essex Furukawa Magnet Wire USA LLC
    Inventors: Matthew Leach, James J. Connell, Allen Roe Guisinger, Allan R. Knerr, Frederick Marshall McFarland, Tamanna Ferdous McFarland, Mohammad Mazhar Said
  • MAGNET WIRE WITH FLEXIBLE CORONA RESISTANT INSULATION
    Publication number: 20220262541
    Abstract: Magnet wire with flexible corona resistant enamel insulation may include a conductor and a multi-layer insulation system formed around the conductor. The insulation system may include a basecoat formed from first polymeric enamel insulation, a midcoat formed from second polymeric enamel insulation, and a topcoat formed from third polymeric enamel insulation. The midcoat may include a filler containing silica dioxide and chromium oxide dispersed in a base polyamideimide material. Additionally, the magnet wire may exhibit few or no cracks in the topcoat when the wire is bent 180 degrees around a 4 mm mandrel.
    Type: Application
    Filed: April 28, 2022
    Publication date: August 18, 2022
    Inventors: Tamanna Ferdous McFarland, James J. Connell, Allen Roe Guisinger, Allan R. Knerr, Matthew Leach, Frederick Marshall McFarland, Mohammad Mazhar Said
  • MAGNET WIRE WITH CORONA RESISTANT POLYIMIDE INSULATION
    Publication number: 20220254542
    Abstract: Magnet wire with corona resistant enamel insulation may include a conductor and a multi-layer insulation system formed around the conductor. The insulation system may include a basecoat formed from a first polymeric enamel insulation. A midcoat formed from a second polymeric enamel insulation may be formed around the basecoat, and the second polymeric enamel insulation may include a filler dispersed in a base polyimide material. The filler may include between 20 percent and 80 percent by weight of silica dioxide and between 20 and 80 percent by weight of titanium dioxide. Additionally, the insulation system may include a topcoat formed from third polymeric enamel insulation formed around the midcoat.
    Type: Application
    Filed: April 28, 2022
    Publication date: August 11, 2022
    Inventors: Matthew Leach, James J. Connell, Allen Roe Guisinger, Allan R. Knerr, Frederick Marshall McFarland, Tamanna Ferdous McFarland, Mohammad Mazhar Said