Patents by Inventor John T. Bahns

John T. Bahns 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: 8835805
    Abstract: The invention provides a simple and inexpensive method to assemble nanomaterials into millimeter lengths. The method can be used to generate optical, sensing, electronic, magnetic and or catalytic materials. Also provided is a substrate comprised of fused nanoparticles. The invention also provides a diode comprised of assembled nanoparticles.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: September 16, 2014
    Assignee: UChicago Argonne, LLC
    Inventors: John T. Bahns, Liaohai Chen, Stephen K. Gray, Subramanian Sankaranarayanan
  • Publication number: 20130084451
    Abstract: The invention provides a simple and inexpensive method to assemble nanomaterials into millimeter lengths. The method can be used to generate optical, sensing, electronic, magnetic and or catalytic materials. Also provided is a substrate comprised of fused nanoparticles. The invention also provides a diode comprised of assembled nanoparticles.
    Type: Application
    Filed: September 30, 2011
    Publication date: April 4, 2013
    Applicant: UCHICAGO ARGONNE, LLC
    Inventors: John T. Bahns, Liaohai Chen, Stephen K. Gray, Subramanian Sankaranarayanan
  • Patent number: 6472889
    Abstract: A noncontact method and apparatus for testing electrical circuitry which provides large improvements in both resolution and speed. The attributes of noncontact, high resolution, and speed are satisfied by using inexpensive low intensity resonant laser beams in a shroud gas preferably comprising rubidium atoms in argon gas to create an electrically conductive ion channel microprobe. The conductive ion channel microprobe can be used to create an electrically conductive path between a circuit's test pad or point and signal generation and detection apparatus. If the circuit's test pad or point is functioning properly, then the ion channel microprobe will complete the electrically conductive path, the signal generation device will produce a signal over the conductive path and the signal detection device will detect or measure the signal. If the circuit's test pad or point is malfunctioning, the conductive path will remain open and the signal detection device will not detect a signal.
    Type: Grant
    Filed: June 15, 2000
    Date of Patent: October 29, 2002
    Assignee: University of Connecticut
    Inventors: John T. Bahns, William C. Stwalley
  • Patent number: 6118285
    Abstract: A system for testing the electrical conductivity of printed traces, on multiple surfaces, of a printed wiring board using non-contacting probes. The non-contact probes generate a plasma in a plasma generating chamber that is used to apply a voltage to the printed wiring board. A measurement circuit determines the magnitude of the voltage on the printed wiring board.
    Type: Grant
    Filed: March 6, 1998
    Date of Patent: September 12, 2000
    Assignee: Probot, Inc
    Inventors: Ronald W. Parker, James W. Grace, Gerald W. Siter, Eli K. Dabora, John T. Bahns, Baki Cetegen
  • Patent number: 6020747
    Abstract: The present invention is directed to an electrical contact probe, comprising at least one fiber mounted in a holder, the at least one fiber having high electrical conductivity and high mechanical strength and made from a material selected from the group consisting of a conductive organic material and a conductive glass, the at least one fiber having a diameter in the range from 5 nanometers to 20 micrometers. The present invention is also directed to a device to measure various electrical parameters of a circuit.
    Type: Grant
    Filed: January 26, 1998
    Date of Patent: February 1, 2000
    Inventors: John T. Bahns, Eli K. Dabora
  • Patent number: 5620571
    Abstract: A multiple single frequency laser for optical manipulation of molecules is presented. The multiple single frequency laser comprises generally a multiline laser source which utilizes one sample of molecular species as a source for the generation of optical radiation for manipulating (e.g., cooling) a second, separate sample of the same species of molecules. More specifically, the multiple single frequency (MSF) laser comprises a master controller for controlling the frequency of powerful single frequency pump lasers. Laser beams from the pump lasers excite coherent Raman transitions in molecules contained in a Raman gain cell. These beams are tuned to specific optical transitions in an electronic band of molecules. The molecules contained in the Raman gain cell generate the multiple frequencies needed to manipulate (e.g., cool) the same species of molecules in a second, separate sample.
    Type: Grant
    Filed: April 5, 1995
    Date of Patent: April 15, 1997
    Assignee: The University of Connecticut
    Inventors: John T. Bahns, William C. Stwalley, Phillip L. Gould
  • Patent number: 5345465
    Abstract: A device for generating and guiding an electric discharge current including a first electrode, second electrode and a material arranged between the first and second electrode. The device uses a laser for generating photons having energies equal to the energy between two excited electronic states of the material. The photons fill a region of the material from the first electrode through the material to the second electrode ionizing the region of the material between the first and second electrodes. A voltage generating unit connected to the first and second electrodes applies a voltage between the first and second electrodes thereby generating the electric discharge which follows an ionized path in the region between the first and second electrodes.
    Type: Grant
    Filed: August 10, 1992
    Date of Patent: September 6, 1994
    Assignee: The University of Iowa Research Foundation
    Inventor: John T. Bahns
  • Patent number: 5335238
    Abstract: A device and method for generating and guiding an electric discharge current including a first electrode, a second electrode and a material arranged between the first and second electrodes. The device and method involve the use of a laser for generating photons having energies equal to the energy between two excited electronic states of the material. The photons fill a region of the material from the first electrode through the material to the second electrode, ionizing the region of the material between the first and second electrodes. A voltage generating unit connected to the first and second electrodes applies a voltage between the first and second electrodes thereby generating the electric discharge which follows an ionized path in the region between the first and second electrodes. A solenoid is arranged around the housing so that the magnetic field which it produces is oriented approximately along the ionized path, thereby providing improved confinement of the electric discharge.
    Type: Grant
    Filed: April 8, 1993
    Date of Patent: August 2, 1994
    Assignee: The University of Iowa Research Foundation
    Inventor: John T. Bahns
  • Patent number: 5118950
    Abstract: A cluster ion synthesis process utilizing a containerless environment to grow in a succession of steps cluster ions of large mass and well defined distribution. The cluster ion growth proceeds in a continuous manner in a plurality of growth chambers which have virtually unlimited storage times and capacities.
    Type: Grant
    Filed: December 29, 1989
    Date of Patent: June 2, 1992
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: John T. Bahns, William C. Stwalley
  • Patent number: 5051582
    Abstract: The method of producing specific cluster ions utilizing an ionization source to produce ions which are then sorted or resolved according to velocity and mass. The selected ions are passed through a growth chamber containing a gaseous vapor of a specified element and are coated by the vapor to provide coated cluster ions. The coated cluster ions are mass selected and held in an ion trap.
    Type: Grant
    Filed: September 6, 1989
    Date of Patent: September 24, 1991
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: John T. Bahns, William C. Stwalley