Patents by Inventor Eric R. Dufresne

Eric R. Dufresne 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: 20090250601
    Abstract: A method of manufacturing a semiconductor device able to reduce the number of manufacturing steps and attain the rationalization of a manufacturing line is disclosed. The semiconductor device is a high-frequency module assembled by mounting chip parts (22) and semiconductor pellets (21) onto each of wiring substrates (2) formed on a matrix substrate (27) after inspection. A defect mark (2e) is affixed to a wiring substrate (2) as a block judged to be defective in the inspection of the matrix substrate (27), then in a series of subsequent assembling steps the defect mark (e) is recognized and the assembling work for the wiring substrate (2) with the defect mark (2e) thereon is omitted to attain the rationalization of a manufacturing line.
    Type: Application
    Filed: April 1, 2009
    Publication date: October 8, 2009
    Applicant: THE UNIVERSITY OF CHICAGO
    Inventors: David G. Grier, Eric R. Dufresne
  • Patent number: 7588940
    Abstract: An apparatus and method for manipulating, effecting interaction of, photochemically transforming and/or sorting small dielectric particles or other materials. The apparatus and method involves use of one or more diffractive optical elements which each receive a laser beam and form a plurality of laser beams. These laser beams are operated on by a telescope lens system and then an objective lens element to create an array of optical traps for manipulating, effecting interaction of, photochemically transforming and/or sorting small dielectric particles or other materials.
    Type: Grant
    Filed: January 6, 2005
    Date of Patent: September 15, 2009
    Assignee: University of Chicago
    Inventors: David G. Grier, Eric R. Dufresne
  • Patent number: 7227688
    Abstract: An apparatus and method for manipulating small dielectric particles. The apparatus and method involves use of a diffractive optical element which receives a laser beam and forms a plurality of light beams. These light beams are operated on by a telescope lens system and then an objective lens element to create an array of optical traps for manipulating small dielectric particles.
    Type: Grant
    Filed: September 22, 2003
    Date of Patent: June 5, 2007
    Assignee: National Science Foundation
    Inventors: David G. Grier, Eric R. Dufresne
  • Patent number: 7133203
    Abstract: A method and apparatus for control of optical trap arrays and formation of particle arrays. The method and apparatus provides a laser and a time variable diffractive optical element to allow dynamic control of optical trap arrays and consequent control of particle arrays and also the ability to manipulate singular objects using a plurality of optical traps.
    Type: Grant
    Filed: December 5, 2002
    Date of Patent: November 7, 2006
    Assignee: Arch Development Corporation
    Inventors: David G. Grier, Eric R. Dufresne
  • Patent number: 7104659
    Abstract: A method and apparatus for control of optical trap arrays and formation of particle arrays using light that is in the visible portion of the spectrum. The method and apparatus provides a laser and a time variable diffractive optical element to allow dynamic control of optical trap arrays and consequent control of particle arrays and also the ability to manipulate singular objects using a plurality of optical traps. By avoiding wavelengths associated with strong absorption in the underlying material, creating optical traps with a continuous-wave laser, optimizing the efficiency of individual traps, and trapping extended samples at multiple points, the rate of deleterious nonlinear optical processes can be minimized.
    Type: Grant
    Filed: December 10, 2004
    Date of Patent: September 12, 2006
    Assignee: University of Chicago
    Inventors: David G. Grier, Eric R. Dufresne, Jennifer E. Curtis, Brian A. Koss
  • Patent number: 6863406
    Abstract: An apparatus and method for manipulating, effecting interaction of, photochemically transforming and/or sorting small dielectric particles or other materials. The apparatus and method involves use of one or more diffractive optical elements which each receive a laser beam and form a plurality of laser beams. These laser beams are operated on by a telescope lens system and then an objective lens element to create an array of optical traps for manipulating, effecting interaction of, photochemically transforming and/or sorting small dielectric particles or other materials.
    Type: Grant
    Filed: August 1, 2002
    Date of Patent: March 8, 2005
    Assignee: The University of Chicago
    Inventors: David G. Grier, Eric R. Dufresne
  • Patent number: 6846084
    Abstract: A method and apparatus for control of optical trap arrays and formation of particle arrays using light that is in the visible portion of the spectrum. The method and apparatus provides a laser and a time variable diffractive optical element to allow dynamic control of optical trap arrays and consequent control of particle arrays and also the ability to manipulate singular objects using a plurality of optical traps. By avoiding wavelengths associated with strong absorption in the underlying material, creating optical traps with a continuous-wave laser, optimizing the efficiency of individual traps, and trapping extended samples at multiple points, the rate of deleterious nonlinear optical processes can be minimized.
    Type: Grant
    Filed: August 22, 2003
    Date of Patent: January 25, 2005
    Assignee: University of Chicago
    Inventors: David G. Grier, Eric R. Dufresne, Jennifer E. Curtis, Brian A. Koss
  • Publication number: 20040105158
    Abstract: An apparatus and method for manipulating small dielectric particles. The apparatus and method involves use of a diffractive optical element which receives a laser beam and forms a plurality of light beams. These light beams are operated on by a telescope lens system and then an objective lens element to create an array of optical traps for manipulating small dielectric particles.
    Type: Application
    Filed: September 22, 2003
    Publication date: June 3, 2004
    Applicant: ARCH DEVELOPMENT CORPORATION
    Inventors: David G. GRIER, Eric R. DUFRESNE
  • Publication number: 20040036976
    Abstract: A method and apparatus for control of optical trap arrays and formation of particle arrays using light that is in the visible portion of the spectrum. The method and apparatus provides a laser and a time variable diffractive optical element to allow dynamic control of optical trap arrays and consequent control of particle arrays and also the ability to manipulate singular objects using a plurality of optical traps. By avoiding wavelengths associated with strong absorption in the underlying material, creating optical traps with a continuous-wave laser, optimizing the efficiency of individual traps, and trapping extended samples at multiple points, the rate of deleterious nonlinear optical processes can be minimized.
    Type: Application
    Filed: August 22, 2003
    Publication date: February 26, 2004
    Applicant: University of Chicago
    Inventors: David G. Grier, Eric R. Dufresne, Jennifer E. Curtis, Brian A. Koss
  • Publication number: 20040021949
    Abstract: An apparatus and method for manipulating, effecting interaction of, photochemically transforming and/or sorting small dielectric particles or other materials. The apparatus and method involves use of one or more diffractive optical elements which each receive a laser beam and form a plurality of laser beams. These laser beams are operated on by a telescope lens system and then an objective lens element to create an array of optical traps for manipulating, effecting interaction of, photochemically transforming and/or sorting small dielectric particles or other materials.
    Type: Application
    Filed: August 1, 2002
    Publication date: February 5, 2004
    Applicant: The University of Chicago
    Inventors: David G. Grier, Eric R. Dufresne
  • Patent number: 6626546
    Abstract: A method and apparatus for control of optical trap arrays and formation of particle arrays using light that is in the visible portion of the spectrum. The method and apparatus provides a laser and a time variable diffractive optical element to allow dynamic control of optical trap arrays and consequent control of particle arrays and also the ability to manipulate singular objects using a plurality of optical traps. By avoiding wavelengths associated with strong absorption in the underlying material, creating optical traps with a continuous-wave laser, optimizing the efficiency of individual traps, and trapping extended samples at multiple points, the rate of deleterious nonlinear optical processes can be minimized.
    Type: Grant
    Filed: July 1, 2002
    Date of Patent: September 30, 2003
    Assignee: University of Chicago
    Inventors: David G. Grier, Eric R. Dufresne, Jennifer E. Curtis, Brian A. Koss
  • Patent number: 6624940
    Abstract: An apparatus and method for manipulating small dielectric particles. The apparatus and method involves use of a diffractive optical element which receives a laser beam and forms a plurality of light beams. These light beams are operated on by a telescope lens system and then an objective lens element to create an array of optical traps for manipulating small dielectric particles.
    Type: Grant
    Filed: January 31, 2000
    Date of Patent: September 23, 2003
    Assignee: Arch Development Corporation
    Inventors: David G. Grier, Eric R. Dufresne
  • Publication number: 20030086175
    Abstract: A method and apparatus for control of optical trap arrays and formation of particle arrays. The method and apparatus provides a laser and a time variable diffractive optical element to allow dynamic control of optical trap arrays and consequent control of particle arrays and also the ability to manipulate singular objects using a plurality of optical traps.
    Type: Application
    Filed: December 5, 2002
    Publication date: May 8, 2003
    Inventors: David G. Grier, Eric R. Dufresne
  • Publication number: 20020181113
    Abstract: A method and apparatus for control of optical trap arrays and formation of particle arrays using light that is in the visible portion of the spectrum. The method and apparatus provides a laser and a time variable diffractive optical element to allow dynamic control of optical trap arrays and consequent control of particle arrays and also the ability to manipulate singular objects using a plurality of optical traps. By avoiding wavelengths associated with strong absorption in the underlying material, creating optical traps with a continuous-wave laser, optimizing the efficiency of individual traps, and trapping extended samples at multiple points, the rate of deleterious nonlinear optical processes can be minimized.
    Type: Application
    Filed: July 1, 2002
    Publication date: December 5, 2002
    Applicant: University of Chicago
    Inventors: David G. Grier, Eric R. Dufresne, Jennifer E. Curtis, Brian A. Koss
  • Patent number: 6416190
    Abstract: A method and apparatus for control of optical trap arrays and formation of particle arrays using light that is in the visible portion of the spectrum. The method and apparatus provides a laser and a time variable diffractive optical element to allow dynamic control of optical trap arrays and consequent control of particle arrays and also the ability to manipulate singular objects using a plurality of optical traps. By avoiding wavelengths associated with strong absorption in the underlying material, creating optical traps with a continuous-wave laser, optimizing the efficiency of individual traps, and trapping extended samples at multiple points, the rate of deleterious nonlinear optical processes can be minimized.
    Type: Grant
    Filed: April 27, 2001
    Date of Patent: July 9, 2002
    Assignee: University of Chicago
    Inventors: David G. Grier, Eric R. Dufresne
  • Patent number: 6055106
    Abstract: An apparatus and method for manipulating small dielectric particles. The apparatus and method involves use of a diffractive optical element which receives a laser beam and forms a plurality of light beams. These light beams are operated on by a telescope lens system and then an objective lens element to create an array of optical traps for manipulating small dielectric particles.
    Type: Grant
    Filed: February 3, 1998
    Date of Patent: April 25, 2000
    Assignee: Arch Development Corporation
    Inventors: David G. Grier, Eric R. Dufresne