Patents by Inventor Gilbert L. Marshall

Gilbert L. Marshall 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: 4189760
    Abstract: A monolithic ceramic capacitor having embedded electrodes formed by cosintering of ceramic dielectric layers and layers indifferent to the dielectric layers corresponding in area and position to the electrodes. The indifferent layers are converted to a conductive state, for example, by chemical conversion and used as such or are removed and replaced by metal or conductive material. One example in which the indifferent layers comprise nickel oxide involves stacking layers of green ceramic coated with nickel oxide in the desired electrode pattern, sintering the stacked layers to produce a monolith, reducing the nickel oxide in the monolith to metallic nickel in a hydrogen atmosphere at a temperature low enough to have minimal effect upon the dielectric properties of the ceramic and using the metallic nickel as reduced for the ceramic capacitor electrodes.
    Type: Grant
    Filed: March 31, 1975
    Date of Patent: February 19, 1980
    Assignee: Erie Technological Products, Inc.
    Inventor: Gilbert L. Marshall