Patents by Inventor Jean Murray Stewart

Jean Murray Stewart 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).

  • Cookware Having a Graphite Core
    Publication number: 20240148182
    Abstract: Provided is cookware made from a bonded multi-layer blank assembly. The cookware has a first metal layer, a second metal layer having a cavity with a plurality of spaced-apart posts protruding from a bottom surface of the cavity, and a perforated graphite layer having a thickness of at least 0.010 in. (0.254 mm) and a plurality of spaced-apart holes formed therethrough. The perforated graphite layer is positioned within the cavity of the second metal layer such that the plurality of spaced-apart posts extend through the plurality of spaced-apart holes. The second metal layer is metallurgically bonded to the first metal layer at least via the plurality of spaced-apart posts. A method of making the bonded multi-layer composite cookware is also disclosed.
    Type: Application
    Filed: January 17, 2024
    Publication date: May 9, 2024
    Inventors: William A. Groll, Jean Murray Stewart
  • Cookware having a graphite core
    Patent number: 11930956
    Abstract: Provided is cookware made from a bonded multi-layer blank assembly. The cookware has a first metal layer, a second metal layer having a cavity with a plurality of spaced-apart posts protruding from a bottom surface of the cavity, and a perforated graphite layer having a thickness of at least 0.010 in. (0.254 mm) and a plurality of spaced-apart holes formed therethrough. The perforated graphite layer is positioned within the cavity of the second metal layer such that the plurality of spaced-apart posts extend through the plurality of spaced-apart holes. The second metal layer is metallurgically bonded to the first metal layer at least via the plurality of spaced-apart posts. A method of making the bonded multi-layer composite cookware is also disclosed.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: March 19, 2024
    Assignee: All-Clad Metalcrafters, L.L.C.
    Inventors: William A. Groll, Jean Murray Stewart
  • "Cookware Having a Graphite Core"
    Publication number: 20210177195
    Abstract: Provided is cookware made from a bonded multi-layer blank assembly. The cookware has a first metal layer, a second metal layer having a cavity with a plurality of spaced-apart posts protruding from a bottom surface of the cavity, and a perforated graphite layer having a thickness of at least 0.010 in. (0.254 mm) and a plurality of spaced-apart holes formed therethrough. The perforated graphite layer is positioned within the cavity of the second metal layer such that the plurality of spaced-apart posts extend through the plurality of spaced-apart holes. The second metal layer is metallurgically bonded to the first metal layer at least via the plurality of spaced-apart posts. A method of making the bonded multi-layer composite cookware is also disclosed.
    Type: Application
    Filed: December 13, 2019
    Publication date: June 17, 2021
    Inventors: William A. Groll, Jean Murray Stewart