Patents by Inventor Christopher J. Marmo

Christopher J. Marmo 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).

  • Machine-readable optical disc with reading-inhibit agent
    Patent number: 6434109
    Abstract: An optical disc having machine-readable, information-encoding features is provided with a barrier layer secured to the disc. This barrier layer is configured to prevent machine-reading of the features. A reading-inhibit agent, included in the disc and activated by removal of the barrier layer, is operative, once activated, to alter the disc to inhibit reading of the disc. Alternately, the barrier layer can be eliminated, and the reading-inhibit agent can be activated by initial reading of the disc, as for example by exposure to optical radiation associated with reading of the disc, or rotation of the disc.
    Type: Grant
    Filed: June 22, 2001
    Date of Patent: August 13, 2002
    Assignee: SpectraDisc Corporation
    Inventors: Philip E. Rollhaus, John R. Powell, Eric J. Carlson, Daniel J. Ehntholt, Irwin C. Winkler, Christopher J. Marmo, James R. Valentine
  • Machine-readable optical disc with reading-inhibit agent
    Patent number: 6343063
    Abstract: An optical disc having machine-readable, information-encoding features is provided with a barrier layer secured to the disc. This barrier layer is configured to prevent machine-reading of the features. A reading-inhibit agent, included in the disc and activated by removal of the barrier layer, is operative, once activated, to alter the disc to inhibit reading of the disc, after some period of time. Alternately, the barrier layer can be eliminated, and the reading-inhibit agent can be activated by initial reading of the disc, as for example by exposure to optical radiation associated with reading of the disc, or rotation of the disc.
    Type: Grant
    Filed: October 20, 1999
    Date of Patent: January 29, 2002
    Assignee: SpectraDisc Corp.
    Inventors: Philip E. Rollhaus, John R. Powell, Eric J. Carlson, Daniel J. Ehntholt, Irwin C. Winkler, Christopher J. Marmo, James R. Valentine
  • Machine-readable optical disc with reading-inhibit agent
    Publication number: 20010046204
    Abstract: An optical disc having machine-readable, information-encoding features is provided with a barrier layer secured to the disc. This barrier layer is configured to prevent machine-reading of the features. A reading-inhibit agent, included in the disc and activated by removal of the barrier layer, is operative, once activated, to alter the disc to inhibit reading of the disc Alternately, the barrier layer can be eliminated, and the reading-inhibit agent can be activated by initial reading of the disc, as for example by exposure to optical radiation associated with reading of the disc, or rotation of the disc.
    Type: Application
    Filed: June 22, 2001
    Publication date: November 29, 2001
    Applicant: SpectraDisc Corporation
    Inventors: Philip E. Rollhaus, John R. Powell, Eric J. Carlson, Daniel J. Ehntholt, Irwin C. Winkler, Christopher J. Marmo, James R. Valentine
  • Machine-readable optical disc with reading-inhibit agent
    Patent number: 6011772
    Abstract: An optical disc having machine-readable, information-encoding features is provided with a barrier layer secured to the disc. This barrier layer is configured to prevent machine-reading of the features. A reading-inhibit agent, included in the disc and activated by removal of the barrier layer, is operative, once activated, to alter the disc to inhibit reading of the disc. Alternately, the barrier layer can be eliminated, and the reading-inhibit agent can be activated by initial reading of the disc, as for example by exposure to optical radiation associated with reading of the disc, or rotation of the disc.
    Type: Grant
    Filed: July 30, 1997
    Date of Patent: January 4, 2000
    Assignee: SpectraDisc Corporation
    Inventors: Philip E. Rollhaus, John R. Powell, Eric J. Carlson, Daniel J. Ehntholt, Irwin C. Winkler, Christopher J. Marmo, James R. Valentine
  • Machine-readable optical disc with reading-inhibit agent
    Patent number: RE42011
    Abstract: An optical disc having machine-readable, information-encoding features is provided with a barrier layer secured to the disc. This barrier layer is configured to prevent machine-reading of the features. A reading-inhibit agent, included in the disc and activated by removal of the barrier layer, is operative, once activated, to alter the disc to inhibit reading of the disc, after some period of time. Alternately, the barrier layer can be eliminated, and the reading-inhibit agent can be activated by initial reading of the disc, as for example by exposure to optical radiation associated with reading of the disc, or rotation of the disc.
    Type: Grant
    Filed: January 29, 2004
    Date of Patent: December 28, 2010
    Assignee: Flexplay Technologies, Inc.
    Inventors: Philip E. Rollhaus, Barbara Rollhaus, John R. Powell, Eric J. Carlson, Daniel J. Ehntholt, Irwin C. Winkler, Christopher J. Marmo, James R. Valentine