Patents by Inventor Stephen A. Shear

Stephen A. Shear 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: 4550061
    Abstract: Improved electroerosion recording media are described in which ablatable polymers are used in the electroerosion recording medium. This medium includes at least a substrate or support layer, a base layer which protects the substrate, a thin film of conductive material on the base layer and which can be eroded, and a protective overcoat layer. Ablatable polymers are used as binders in either the base layer or the top protective layer, or both, in order to provide advantages during electroerosion. These ablatable polymers undergo thermally induced depolymerization in such a way that the result is the formation of volatile monomeric or low molecular weight species as the predominant products, with little or no adherent residue.
    Type: Grant
    Filed: April 13, 1984
    Date of Patent: October 29, 1985
    Assignee: International Business Machines Corporation
    Inventors: Krishna G. Sachdev, Stephen A. Shear, Keith S. Pennington, Mitchell S. Cohen