Patents by Inventor W. John Porter, Jr.

W. John Porter, Jr. 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).

  • Methods and apparatus for heating metal powders
    Patent number: 5397530
    Abstract: A method for heating metal powder, e.g., iron powder, comprises irradiating the powder with microwaves. The powder may be coated with various materials to enhance the heating effects of the microwave. For example, the powder may be coated with a non-emissive material, such as a ceramic material. The powder may also be coated with a dipole material, such as water or plastic, or a dielectric material.
    Type: Grant
    Filed: February 2, 1994
    Date of Patent: March 14, 1995
    Assignee: Hoeganaes Corporation
    Inventors: K. S. V. L. Narasimhan, Johan Arvidsson, Howard G. Rutz, W. John Porter, Jr.