Patents by Inventor Pankaj Attri

Pankaj Attri 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).

  • Microsencapsulated system for thermal paper
    Patent number: 5741592
    Abstract: A coating formulation which forms a heat sensitive coating and a thermal recording material with such a coating are disclosed. The heat sensitive coating shows improved prerecording shelf life and improved record stability and consists of microcapsules containing a solid blend of dye and sensitizer, with the exterior of the capsules consisting of color developer and other coating materials such as pigment, binder and additives. Application of heat during printing renders the microcapsule walls permeable to the dye resulting in color development upon reaction of the dye and color developer.
    Type: Grant
    Filed: December 20, 1995
    Date of Patent: April 21, 1998
    Assignee: NCR Corporation
    Inventors: Maurice W. Lewis, John C. Rosenbaum, Albert J. Herbert, Pankaj Attri