Patents by Inventor Richard G. Freeman

Richard G. Freeman 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).

  • SERS Reporter Molecules and Methods
    Publication number: 20140194605
    Abstract: A SERS tag comprising a core comprising at least two aggregated particles of a SERS enhancing material wherein the contact point between the particles defines a crevice; and a reporter molecule having a length sufficiently short to fit into the crevice and a conjugated path length which is as large as possible, provided the overall reporter molecule length is maintained sufficiently short to fit into the crevice.
    Type: Application
    Filed: March 13, 2014
    Publication date: July 10, 2014
    Applicant: Cabot Security Materials, Inc.
    Inventors: Felicia Tam, Marcelo E. Piotti, Richard G. Freeman
  • WAVELENGTH SELECTIVE SERS NANOTAGS
    Publication number: 20130009119
    Abstract: Wavelength selective particles such as SERS nanotags modified for wavelength selectivity. As used herein, a wavelength selective particle is one which cannot be effectively excited or interrogated at one or more wavelengths where a reporter molecule associated with the particle would normally produce a spectrum. Also disclosed are methods of manufacturing wavelength selective particles and methods of tagging materials or objects with wavelength selective particles.
    Type: Application
    Filed: March 22, 2011
    Publication date: January 10, 2013
    Applicant: CABOT SECURITY MATERIALS, INC.
    Inventors: Michael J. Natan, Richard G. Freeman, William E. Doering, Marcelo E. Piotti
  • SERS Reporter Molecules and Methods
    Publication number: 20120156491
    Abstract: A SERS tag comprising a core comprising at least two aggregated particles of a SERS enhancing material wherein the contact point between the particles defines a crevice; and a reporter molecule having a length sufficiently short to fit into the crevice and a conjugated path length which is as large as possible, provided the overall reporter molecule length is maintained sufficiently short to fit into the crevice.
    Type: Application
    Filed: June 17, 2011
    Publication date: June 21, 2012
    Applicant: CABOT SECURITY MATERIALS INC.
    Inventors: Felicia Tam, Marcelo E. Piotti, Richard G. Freeman
  • Keyboard and display panel for intersection controller
    Patent number: D290707
    Type: Grant
    Filed: May 23, 1984
    Date of Patent: July 7, 1987
    Assignee: Multisonics, Inc.
    Inventors: Robert S. Allen, Richard G. Freeman, Thomas W. Seabury