Patents by Inventor Stephen McGrew

Stephen McGrew 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).

  • Publication number: 20080204876
    Abstract: The invention relates to an anticounterfeiting device comprising a form birefringent surface relief structure bearing a colored three-dimensional polarization image. The structure may be composed of pixels whose surface relief microstructure and composition determines the direction and color of zero-order diffracted light visible from each pixel when the structure is illuminated with polarized light and viewed through an analyzer that passes light of the opposite polarization.
    Type: Application
    Filed: July 27, 2005
    Publication date: August 28, 2008
    Inventor: Stephen McGrew
  • Publication number: 20070024975
    Abstract: The invention relates to an anticounterfeiting device comprising a form birefringent surface relief structure bearing a colored three-dimensional polarization image. The structure may be composed of pixels whose surface relief microstructure and composition determines the direction and color of zero-order diffracted light visible from each pixel when the structure is illuminated with polarized light and viewed through an analyzer that passes light of the opposite polarization.
    Type: Application
    Filed: July 27, 2005
    Publication date: February 1, 2007
    Inventor: Stephen McGrew
  • Publication number: 20060154248
    Abstract: A method for manufacturing an array of biomolecules that have complementary binding species is disclosed. The method utilize a master substrate containing a desired master array of binding molecules or ligands, e.g., DNA target molecules. A mixture of complementary, antiligand molecules, e.g., DNA probe molecules, are then hybridized to the ligands of the master array, Forming an array of antiligand molecules reversibly bound to the molecules in the master array. The antiligand array is then transferred and bound to a separate substrate, to form a desired array of antiligand molecules on the separate substrate. The process may be repeated to produce multiple arrays or multiple generations of arrays. Also disclosed is a sensor array device and method. The device includes an array of vibratory tympanic elements, each having a specific analyte binding probe carried on the vibratory membrane of the element. A binding event is detected by a change in the vibrational resonance of a selected element.
    Type: Application
    Filed: October 2, 2003
    Publication date: July 13, 2006
    Inventors: Stephen McGrew, Donald Lightfoot
  • Publication number: 20050185188
    Abstract: Quantum resonance fluorescent microscope systems for detecting component substances in a specimen are described. The systems are based on exciting the sample containing the material with a femtosecond to nanosecond probe pulse of collimated light, which is tailored to optimize detection of a given material by separating the probe pulse into component features of frequency, polarization, phase and/or amplitude. The component features are independently shaped and formed into a composite pulse selected to optimize a signature response pulse received from the material. In some cases, two independently re-shaped pulses are combined, where one re-shaped pulse has two mixed polarization states and the other re-shaped pulse is linearly polarized. These two pulses are made to intersect at an angle of 90 degrees so that the combined pulse has electric field in each of the XYZ axes.
    Type: Application
    Filed: January 19, 2005
    Publication date: August 25, 2005
    Inventor: Stephen McGrew
  • Publication number: 20050100222
    Abstract: A system and method for reading the information stored in holograms and other diffractive objects. The information is read by analyzing the diffraction pattern produced when a laser beam is focused onto a small spot on the object and scanned across the object.
    Type: Application
    Filed: December 14, 2004
    Publication date: May 12, 2005
    Inventor: Stephen McGrew