Patents by Inventor Shawn O. Meade

Shawn O. Meade 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).

  • Optically encoded particles through porosity variation
    Patent number: 9181634
    Abstract: The invention concerns a particle having a code from a library of codes embedded in its physical structure by refractive index changes between different regions of the particle. In preferred embodiments, a thin film possesses porosity that varies in a manner to produce a code detectable in the reflectivity spectrum. An assay detection method uses such a particle and detects a spectral shift in the presence of an analyte. Additional embodiments are disclosed including additional features.
    Type: Grant
    Filed: December 21, 2004
    Date of Patent: November 10, 2015
    Assignee: The Regents of the University of California
    Inventors: Michael J. Sailor, Shawn O. Meade
  • Method for forming optically encoded thin films and particles with grey scale spectra
    Patent number: 8308066
    Abstract: The invention concerns a method of making a thin film and/or particle having a grey scale code embedded in its physical structure by refractive index changes between different regions of the thin film or particle, as well as thin films and particles made by the method. In a preferred method for encoding a thin film, a semiconductor or insulator substrate is etched to form a thin film including pores. The etching conditions are controlled to vary porosity in the thin film according to a pattern that will generate an optical signature in the reflectivity spectrum in response to illumination such that the optical signature will including a grey scale code. The etching waveform is formed by the addition of at least two separate sine components in accordance with the following equations (1)An=(Anmax?Anmin)/2; (2) kn=frequency=1/period; (3) yn=An[sin(knt??)+1]+Anmin (4) ycomp=[y1+ . . .
    Type: Grant
    Filed: December 21, 2004
    Date of Patent: November 13, 2012
    Assignee: The Regents of the University of California
    Inventors: Michael J. Sailor, Shawn O. Meade
  • Polymer composite photonic particles
    Patent number: 8206780
    Abstract: A method for forming photonic particles, where the method includes the steps of preparing a porous photonic material layer, patterning a soluble polymer on the porous photonic material layer, leaving dividing portions of the material layer untreated, infusing the polymer into the material layer, and removing the dividing portions of the material to obtain the photonic particles.
    Type: Grant
    Filed: December 14, 2005
    Date of Patent: June 26, 2012
    Assignee: The Regents of the University of California
    Inventors: Yang Yang Li, Vijay S. Kollengode, Michael J. Sailor, Shawn O. Meade
  • Polymer Composite Photonic Particles
    Publication number: 20080145513
    Abstract: A method for forming photonic particles, where the method includes the steps of preparing a porous photonic material layer, patterning a soluble polymer on the porous photonic material layer, leaving dividing portions of the material layer untreated, infusing the polymer into the material layer, and removing the dividing portions of the material to obtain the photonic particles.
    Type: Application
    Filed: December 14, 2005
    Publication date: June 19, 2008
    Inventors: Yang Yang Li, Vijay S. Kollengode, Michael J. Sailor, Shawn O. Meade