Patents by Inventor David K. Johnson

David K. Johnson 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: 6564964
    Abstract: A coordinate selectable vending machine assembly for dispensing articles from a plurality of article storage compartments, including horizontally arranged helical coils, comprises a single dispenser, movable between the plurality of storage compartments for vending a selected article. The single dispenser is movable between the plurality storage compartments in response to an electronic signal sent by a micro control panel after a user has inserted money into the machine and used the coordinate section to identify the type of article to be dispensed. The dispenser moves, utilizing a pair of stepping motors, until aligned with the selected storage compartment. Once in position, the dispenser is urged from a normal position out of engagement with the storage compartment to a second position in engagement with the storage compartment for actuation of the vending selected article, which it then actuates resulting in dispensing of the article.
    Type: Grant
    Filed: September 4, 2002
    Date of Patent: May 20, 2003
    Inventor: David K. Johnson
  • Publication number: 20030006241
    Abstract: A coordinate selectable vending machine assembly for dispensing articles from a plurality of article storage compartments, including horizontally arranged helical coils, comprises a single dispenser, movable between the plurality of storage compartments for vending a selected article. The single dispenser is movable between the plurality storage compartments in response to an electronic signal sent by a micro control panel after a user has inserted money into the machine and used the coordinate section to identify the type of article to be dispensed. The dispenser moves, utilizing a pair of stepping motors, until aligned with the selected storage compartment. Once in position, the dispenser is urged from a normal position out of engagement with the storage compartment to a second position in engagement with the storage compartment for actuation of the vending selected article, which it then actuates resulting in dispensing of the article.
    Type: Application
    Filed: September 4, 2002
    Publication date: January 9, 2003
    Inventor: David K. Johnson
  • Patent number: 6389418
    Abstract: A method of data mining represents related patents in a multidimensional space. Distance between patents in the multidimensional space corresponds to the extent of relationship between the patents. The relationship between pairings of patents can be expressed based on weighted combinations of several predicates. The user can select portions of the space to perceive. The user also can interact with and control the communication of the space, focusing attention on aspects of the space of most interest. The multidimensional spatial representation allows more ready comprehension of the structure of the relationships among the patents.
    Type: Grant
    Filed: February 9, 2000
    Date of Patent: May 14, 2002
    Assignee: Sandia Corporation
    Inventors: Kevin W. Boyack, V. Gerald Grafe, David K. Johnson, Brian N. Wylie
  • Publication number: 20010000610
    Abstract: A vending machine for dispensing items from a plurality of horizontally arranged helical coils including a single dispenser for actuating for rotational movement of a selected helical coil. The machine includes, in a first embodiment, a horizontally positioned threaded bar on which is mounted the dispenser wherein rotation of the threaded horizontal bar re-positions the dispenser along a Y axis. A pair of vertical bars, a first vertical bar having a threaded exterior, rotation of the threaded vertical bar re-positions the horizontal bar with the following dispenser. Light emitters, positioned adjacent each helical coil, signal a receiver mounted on the dispenser assembly for positioning the dispenser in a pre-determined position. Once in position, dispenser is urged from a normal position out of engagement with any helical coil to an second position in engagement with a selected helical coil for actuation of the selected helical coil vending the selected article.
    Type: Application
    Filed: December 8, 2000
    Publication date: May 3, 2001
    Inventor: David K. Johnson
  • Patent number: 6190923
    Abstract: The present invention relates to the field of immunoassays for metal ions. The invention presents: chelators, chelates, antibodies specific for the chelates, tracers comprising chelates conjugated to detectable labels, and immunoassays utilizing the foregoing.
    Type: Grant
    Filed: September 4, 1998
    Date of Patent: February 20, 2001
    Inventor: David K. Johnson
  • Patent number: 5987470
    Abstract: A method of data mining represents related items in a multidimensional space. Distance between items in the multidimensional space corresponds to the extent of relationship between the items. The user can select portions of the space to perceive. The user also can interact with and control the communication of the space, focusing attention on aspects of the space of most interest. The multidimensional spatial representation allows more ready comprehension of the structure of the relationships among the items.
    Type: Grant
    Filed: August 21, 1997
    Date of Patent: November 16, 1999
    Assignee: Sandia Corporation
    Inventors: Charles E. Meyers, George S. Davidson, David K. Johnson, Bruce A. Hendrickson, Brian N. Wylie
  • Patent number: 5902831
    Abstract: A method for the prevention and treatment of atherosclerosis and its related diseases in mammals, in which an NADPH oxidase inhibitor is administered, is provided. The NADPH oxidase inhibitor prevents the production of reactive oxygen species upon exposure of endothelial cells to atherogenic LDL levels, thus resulting in decreased endocytosis and vascular hyperpermeability. Preferred NADPH oxidase inhibitors are of the formula: ##STR1## Additionally, there is provided a diagnostic method for predicting risk of a human patient to atherosclerotic-related diseases.
    Type: Grant
    Filed: May 23, 1997
    Date of Patent: May 11, 1999
    Assignee: The Research Foundation of State University of New York
    Inventors: James Arthur Holland, David K. Johnson
  • Patent number: 5821796
    Abstract: A network circuit has a single port device 28 having a high impedance output node 42 when the single port device 28 is powered down; and a multi port device 50 having a bias node 60 coupled to the output node 42.
    Type: Grant
    Filed: September 23, 1996
    Date of Patent: October 13, 1998
    Assignee: Texas Instruments Incorporated
    Inventors: Dan Yaklin, David K. Johnson, Alan Wetzel
  • Patent number: 5805859
    Abstract: Described is a circuit modifier, network, and method for use with an event-driven digital logic simulator for enforcing consistent evaluation of input pin changes at state elements. The invention automatically interposes a fictitious 0-delay defer agent or processor, at the input pin to state elements such as D Flip-Flops. The interposition of the defer agent is handled by the simulator as follows. Defer agents schedule events related to input state changes on a special time or task queue which is not processed until after all other events have been executed for the current time, including any extra iterations caused by 0-delay scheduling activity. Defer agents or processors are placed in a simulation network just prior to one or more of the input pins of state elements, the effect of which is to delay events that normally would propagate to the input pin of a state element until all other normal simulation events are processed.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: September 8, 1998
    Assignee: Synopsys, Inc.
    Inventors: David J. Giramma, Thomas E. Roth, Oliver W. Kozber, Michael G. Robinson, David K. Johnson
  • Patent number: 5683907
    Abstract: The present invention relates to the field of immunossays for metal ions. The invention presents: metal ion-ligand coordination complexes ("MLC"), novel ligands, antibodies specific for MLC, immunoassays utilizing the foregoing, and methods for selecting said antibodies.
    Type: Grant
    Filed: May 5, 1995
    Date of Patent: November 4, 1997
    Assignee: Abbott Laboratories
    Inventor: David K. Johnson
  • Patent number: 5681960
    Abstract: The present invention relates to the field of immunoassays for metal ions. The invention presents: metal ion-ligand coordination complexes ("MLC"), novel ligands, antibodies specific for MLC, immunoassays utilizing the foregoing, and methods for selecting said antibodies.
    Type: Grant
    Filed: May 5, 1995
    Date of Patent: October 28, 1997
    Assignee: Abbott Laboratories
    Inventor: David K. Johnson
  • Patent number: 5670645
    Abstract: The present invention relates to the field of immunoassays for metal ions. The invention presents: metal ion-ligand coordination complexes ("MLC"), novel ligands, antibodies specific for MLC, immunoassays utiliizing the foregoing, and methods for selecting said antibodies.
    Type: Grant
    Filed: May 23, 1995
    Date of Patent: September 23, 1997
    Assignee: Abbott Laboratories
    Inventor: David K. Johnson
  • Patent number: 5670627
    Abstract: The present invention relates to the field of immunoassays for metal ions. The invention presents: metal ion-ligand coordination complexes ("MLC"), novel ligands, antibodies specific for MLC, immunoassays utilizing the foregoing, and methods for selecting said antibodies.
    Type: Grant
    Filed: May 5, 1995
    Date of Patent: September 23, 1997
    Assignee: Abbott Laboratories
    Inventor: David K. Johnson
  • Patent number: 5663301
    Abstract: The present invention relates to the field of immunoassays for metal ions. The invention presents: metal ion-ligand coordination complexes ("MLC"), novel ligands, antibodies specific for MLC, immunoassays utiliizing the foregoing, and methods for selecting said antibodies.
    Type: Grant
    Filed: May 5, 1995
    Date of Patent: September 2, 1997
    Assignee: Abbott Laboratories
    Inventor: David K. Johnson
  • Patent number: 5661395
    Abstract: A current source circuit that operates advantageously in the linear region of an FET and that minimizes any voltage drop at its output node which is not load related. The circuit operates under the principle that the output current is dynamically measured without introducing any elements that affects the voltage drop across the FET. Its current source includes a pass device with feedback control, such that a constant current is obtained regardless of the load placed at the output terminal. The operation of the pass device is mirrored by a second pass device having physical dimension that only a fraction of those of the first pass device. A high input impedance differential amplifier, driven by the respective outputs of the first and second pass devices, forces the mirror pass device to the identical voltage as the first pass device.
    Type: Grant
    Filed: September 28, 1995
    Date of Patent: August 26, 1997
    Assignee: International Business Machines Corporation
    Inventors: David K. Johnson, Daniel Edward Skooglund, Michael Anthony Sorna
  • Patent number: 5654160
    Abstract: The present invention relates to the field of immunoassays for metal ions. The invention presents: metal ion-ligand coordination complexes ("MLC"), novel ligands, antibodies specific for MLC, immunoassays utiliizing the foregoing, and methods for selecting said antibodies.
    Type: Grant
    Filed: May 5, 1995
    Date of Patent: August 5, 1997
    Assignee: Abbott Laboratories
    Inventor: David K. Johnson
  • Patent number: 5631172
    Abstract: The present invention relates to the field of immunoassays for metal ions. The invention presents: metal ion-ligand coordination complexes ("MLC"), novel ligands, antibodies specific for MLC, immunoassays utilizing the foregoing, and methods for selecting said antibodies.
    Type: Grant
    Filed: May 5, 1995
    Date of Patent: May 20, 1997
    Assignee: Abbott Laboratories
    Inventor: David K. Johnson
  • Patent number: 5476939
    Abstract: The present invention relates to the field of immunoassays for metal ions. The invention presents: metal ion-ligand coordination complexes ("MLC"), novel ligands, antibodies specific for MLC, immunoassays utiliizing the foregoing, and methods for selecting said antibodies.
    Type: Grant
    Filed: December 30, 1993
    Date of Patent: December 19, 1995
    Assignee: Abbott Laboratories
    Inventor: David K. Johnson
  • Patent number: 5270378
    Abstract: A novel fluorochemical polymer surfactant reduces disuniformities in polymeric coatings. The coating composition comprising an organic solvent, an organic polymer compatible with said solvent, and a coating aid comprising a fluorinated polymer different from said polymer compatible with said solvent, said fluorinated polymer having at least three different moieties within the polymer chain derived from reactive monomers, the monomers comprising a fluorochemical acrylate, a short-chain-alkyl acrylate, and a polar monomer.
    Type: Grant
    Filed: October 26, 1992
    Date of Patent: December 14, 1993
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: David K. Johnson, Patricia M. Savu
  • Patent number: 5245026
    Abstract: The present invention provides linear, cyclic and trifurcate tri- and tetramine backbone multidentate chelating agents based on the 8-hydroxyquinoline chelating unit. The chelating agents may optionally be substituted with a substrate reactive moiety and antibody-metal ion conjugates may be produced for in vivo diagnostic and therapeutic methods.
    Type: Grant
    Filed: May 21, 1991
    Date of Patent: September 14, 1993
    Assignees: Abbott Laboratories, Tobishi Yakuhin Kogyo Kabushiki Kaisha
    Inventors: David K. Johnson, Steven J. Kline