Patents by Inventor Rajasekar (Raj) Vaidyanathan

Rajasekar (Raj) Vaidyanathan 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).

  • Publication number: 20080268185
    Abstract: An ink-jet media sheet imparting superior image quality and permanence is disclosed. Such a sheet may comprise a substrate consecutively coated with a porous ink-absorbing layer and a porous ink-receiving layer, where the specific surface area of the particulates of the ink-absorbing layer is less than that of the ink-receiving layer, e.g., the particulates are generally smaller in the ink-receiving layer. The porous coating layers can comprise semi-metal or metal oxide particulates and may further include other surface treatment or reactive groups having functional moieties to promote fixing and localizing printed colorants. Images printed on these media sheets exhibit good fastness to water, ozone, and humidity as well as improved color gamut and black intensity.
    Type: Application
    Filed: April 30, 2007
    Publication date: October 30, 2008
    Inventors: Tienteh Chen, Tony Pidding, Rajasekar (Raj) Vaidyanathan