Patents by Inventor Robert G. Melega

Robert G. Melega 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).

  • Dry film process for altering the wavelength of response of holograms
    Patent number: 5182180
    Abstract: The process is disclosed for altering the wavelength response of a volume phase reflection hologram by contacting the hologram with a diffusion element containing a monomer. Monomer in the diffusion element is partially polymerized to effect a desired diffusion pattern.
    Type: Grant
    Filed: August 27, 1991
    Date of Patent: January 26, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: William J. Gambogi, Jr., Robert G. Melega