Patents by Inventor Stephen E. Harris

Stephen E. Harris 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).

  • Patent number: 9693884
    Abstract: A quick release prosthetic connector for detachably joining a threaded prosthetic socket to a prosthetic includes a socket-connect portion configured for connection to the prosthetic socket. A plurality of locking members is carried by the socket-connect portion. The plurality of locking members are positional between a release position and a locking position and normally biased in the locking position. A prosthetic-connect portion is configured for connection to the prosthetic. A plurality of locking member engaging apertures is provided in the prosthetic-connect portion. The plurality of locking member engaging apertures are configured to selectively receive the plurality of locking members, respectively, of the socket-connect portion in the locking position of the plurality of locking members. A lock portion is carried by the socket-connect portion. The lock portion is configured to selectively lock and release the prosthetic-connect portion with respect to the socket-connect portion.
    Type: Grant
    Filed: April 27, 2016
    Date of Patent: July 4, 2017
    Assignee: SERGIUS INDUSTRIES, LLC
    Inventors: Jedidiah D. Morgan, Stephen E. Harris
  • Patent number: 8970944
    Abstract: Improved production of entangled photon pairs (biphotons) via spontaneous parametric down conversion (SPDC) is provided. In one aspect, forward-wave SPDC is performed in a monolithic resonator (resonant for both signal and idler) having a double pass pump geometry to provide a spectrally bright source of biphotons. In another aspect, backward-wave SPDC is performed in a resonator (resonant for both signal and idler) to provide a spectrally bright source of biphotons. For either of these approaches, the biphotons can be made to have polarization entanglement by using quasi phasematching (QPM) with two QPM periods simultaneously.
    Type: Grant
    Filed: April 19, 2013
    Date of Patent: March 3, 2015
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Chih-Sung Chuu, Guang-Yu Yin, Stephen E. Harris
  • Publication number: 20140092467
    Abstract: Improved production of entangled photon pairs (biphotons) via spontaneous parametric down conversion (SPDC) is provided. In one aspect, forward-wave SPDC is performed in a monolithic resonator (resonant for both signal and idler) having a double pass pump geometry to provide a spectrally bright source of biphotons. In another aspect, backward-wave SPDC is performed in a resonator (resonant for both signal and idler) to provide a spectrally bright source of biphotons. For either of these approaches, the biphotons can be made to have polarization entanglement by using quasi phasematching (QPM) with two QPM periods simultaneously.
    Type: Application
    Filed: April 19, 2013
    Publication date: April 3, 2014
    Inventors: Chih Sung Chuu, Guang-Yu Yin, Stephen E. Harris
  • Patent number: 6097532
    Abstract: A method for producing electromagnetically induced transparency (EIT) in atoms with hyperfine structure. EIT is the phenomenon in which a material (e.g. lead vapor) becomes transparent to a first electromagnetic frequency (a probe beam) when exposed to a second electromagnetic frequency (a coupling beam). In the present invention, the atom has hyperfine split energy levels. In the method of the present invention, the coupling and probe beams are tuned to transitions between the centers of gravity (COGs) of the hyperfine split levels. This allows high transparencies to be achieved in high opacity materials. Also, the present method can produce EIT in isotopically mixed materials. This is because the COGs of hyperfine split levels (in nuclear spin.notident.0 atoms) are generally coincident with nonhyperfine split levels (in nuclear spin=0 atoms). The method of the present invention is directly applicable to nonlinear sum and difference frequency generation.
    Type: Grant
    Filed: October 30, 1998
    Date of Patent: August 1, 2000
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Stephen E. Harris, Andrew J. Merriam, Scott J. Sharpe, Hui Xia, Guang-Yu Yin
  • Patent number: 6083690
    Abstract: Methods and compositions for identifying osteogenic agents are disclosed, wherein a bone morphogenetic protein promoter is utilized in an assay system to modulate the production of an assayable product of a reporter gene.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: July 4, 2000
    Assignee: Osteoscreen, Inc.
    Inventors: Stephen E. Harris, Gregory R. Mundy, Nandini Ghosh-Choudhury, Jian Q. Feng
  • Patent number: 5771117
    Abstract: Efficient nonlinear processes in a nonlinear optical medium are achieved by combining the concept of electromagnetically induced transparency (EIT) and a strongly-driven atomic local oscillator. The present method uses a nonlinear optical medium having elementary entities, such as atoms or molecules, in which a ground state .vertline.1> and a second state .vertline.2> are selected such that the transition between the ground state .vertline.1> and the second state .vertline.2> is a dipole forbidden transition. An upper state .vertline.3> selected from among the energy states .vertline.i> above the ground state .vertline.1> such that a two-photon transition between the ground state .vertline.1> and the second state .vertline.2> via the upper state .vertline.3> is allowed.
    Type: Grant
    Filed: June 17, 1996
    Date of Patent: June 23, 1998
    Assignee: The Board of Trustees of The Leland Stanford Junior University
    Inventors: Stephen E. Harris, Guang-Yu Yin, Maneesh Jain
  • Patent number: 4870653
    Abstract: A traveling-wave, laser-produced-plasma, energy source used to obtain single-pass gain saturation of a photoionization pumped laser. A cylindrical lens is used to focus a pump laser beam to a long line on a target. Grooves are cut in the target to present a surface near normal to the incident beam and to reduce the area, and hence increase the intensity and efficiency, of plasma formation.
    Type: Grant
    Filed: April 22, 1988
    Date of Patent: September 26, 1989
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Mark H. Sher, John J. Macklin, Stephen E. Harris
  • Patent number: 4802183
    Abstract: A microwave pumped excimer laser and method.
    Type: Grant
    Filed: April 7, 1982
    Date of Patent: January 31, 1989
    Assignee: Board of Trustees of the Leland Stanford Junior University
    Inventors: Stephen E. Harris, James F. Young
  • Patent number: 4380072
    Abstract: The method of generating XUV radiation which involves exciting atoms to a storage level, irradiating the excited atoms and raising them to a higher level and allowing the atoms to lase to a lower level other than ground which is simultaneously emptied.
    Type: Grant
    Filed: December 22, 1980
    Date of Patent: April 12, 1983
    Assignee: Stanford University
    Inventor: Stephen E. Harris
  • Patent number: 4218628
    Abstract: A vacuum ultraviolet and x-ray light source based on spontaneous anti-Stokes scattering from atomic population stored in a metastable level is described. The source has a maximum brightness, attained as the media approaches two-photon opacity, equal to that of a blackbody at a Boltzmann temperature characteristic of the population of the metastable level. The source may have high resolution, picosecond time scale, and on a pulsed basis is brighter than other laboratory vacuum ultraviolet light sources. Short wavelength lasers pumped by said source are also described. The lasing atomic species can be separate from or combined in the same envelope with the light source atomic species. Use of the source for spectrographic applications is also described.
    Type: Grant
    Filed: May 23, 1979
    Date of Patent: August 19, 1980
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventor: Stephen E. Harris
  • Patent number: 4000420
    Abstract: Isotope separation is achieved between species A and B having an absorption resonance separated by an isotopic shift by selectively exciting a portion of species A using a tunable photon source of narrow emission line with and subsequently causing collisions with an optically excited third species to selectively ionize the excited portion of species A. When ionized, species A is easily separated by any technique, using its ionized condition to distinguish it from species B.
    Type: Grant
    Filed: June 11, 1974
    Date of Patent: December 28, 1976
    Assignee: The Board of Trustees of Leland Stanford Junior University
    Inventor: Stephen E. Harris