Patents by Inventor Bradley John Siwick

Bradley John Siwick 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).

  • Three dimensional optical memory storage
    Patent number: 6733946
    Abstract: A method for providing three dimensional optical memory storage for computers. The method comprises subjecting a nanocomposite to irradiation. The nanocomposite comprises a matrix of particles of a liquid core resin within an inner shell resin and an outer shell resin. The inner shell resin retains the liquid core resin while the outer shell resin forms a continuous phase of the matrix. The particles of core resin contain at least one photosensitive compound and are in an array in the matrix. The continuous phase is substantially free of photosensitive compound. The irradiation may be a single beam of irradiation selectively focused on individual particles in the array to effect photobleaching of individual particles or a two-photon irradiation of a wavelength to effect photobleaching.
    Type: Grant
    Filed: March 9, 2001
    Date of Patent: May 11, 2004
    Assignees: Xerox Corporation, University of Toronto
    Inventors: Eugenia Kumacheva, Olga Kalinina, Robert John Dwayne Miller, Bradley John Siwick, James Harry Sharp, Jaan Noolandi