Patents by Inventor James G. Downward

James G. Downward 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: 20140012120
    Abstract: An apparatus and method for capturing sensor readings relating to one or more blood flow attributes of a patient at or around a puncture site when the patient is being subjected to hemostasis process by a health care provider. A wide range of different sensor technologies and component configurations can be utilized. The apparatus can operate as a fully stand-alone device, a fully integrated component of a hemostasis treatment tool, or any configuration between the two polar extremes of integration/stand-alone.
    Type: Application
    Filed: August 30, 2013
    Publication date: January 9, 2014
    Applicant: Accumed Radial Systems, LLC
    Inventors: Mauricio Gabriel Cohen, James Patrick Ryan, James G. Downward, IV, Joseph R. Korotko
  • Publication number: 20130237866
    Abstract: The apparatus and method for hemostasis that informs the provider as to whether the appropriate magnitude of pressure is being applied to a puncture site on a patient. A visual pulse indicator can visually convey whether or not there is proper blood flow at the puncture site based on the pulsing motion encountered by the visual pulse indicator on the puncture site. The visual pulse indicator can potentially factor in a variety of different input parameters in displaying information that is useful to providers.
    Type: Application
    Filed: February 18, 2013
    Publication date: September 12, 2013
    Applicant: Accumed Systems, Inc.
    Inventors: Mauricio Gabriel Cohen, James Patrick Ryan, James G. Downward, IV, Joseph R. Korotko
  • Publication number: 20100284863
    Abstract: Some embodiments of the invention comprise a biosensor cartridge which optically, fluidically, and/or mechanically couples to an evanescent sensing measurement apparatus having annularizing illumination elements, said biosensor cartridge and measurement apparatus being used for detecting the presence of chemically or biologically active substances binding to said biosensor present within an aqueous media, such as and without limitation, the presence of specific proteins in blood or urine. Some embodiments comprise an integrated biosensor cartridge having a flow channel and a plurality of storage cavities, fluid flow in the cartridge controlled by valving mechanisms for directing a plurality of fluids through the cartridge, the order and amounts of such fluids passing through the cartridge being externally controlled and required for the detection and measurement of specific chemically or biologically active substances.
    Type: Application
    Filed: March 17, 2008
    Publication date: November 11, 2010
    Inventors: James G. Downward, Judith L. Erb, Daniel P. Schmidt
  • Patent number: 6962808
    Abstract: There is provided an apparatus for screening pharmacological agents for agents which induce regression of cancer. The apparatus includes an evanescent sensing device, at least one sensor having affixed to its surface molecules of a first type, which have affinity for molecules of a biological receptor, the surface molecule and receptor molecule combination having the effect that, in vivo, the binding affects the rate of transcription of gene products, and a molecular tag wherein the molecular tag is bound to the sensor wherein the binding between molecules of the first type and molecules the biological receptor cause the tag to produce a alteration in signal recorded by the evanescent sensing device, the tag also being bound to molecules of a second type, the molecules of the second type having affinity for the receptor molecules.
    Type: Grant
    Filed: July 20, 2001
    Date of Patent: November 8, 2005
    Assignee: The University of Louisville Research Foundation
    Inventors: Judith L. Erb, James G. Downward, IV, John R. Erb-Downward, James L. Witliff
  • Publication number: 20030008314
    Abstract: A method for performing a rapid, homogenous assays for monitoring the reactions of a binding target, by immobilizing a fluorescent-capable chelate complex that is derivatized so as to posses recognition binding ligands, labeling the complex with a labeled second chelator that is added to the assay thereby forming a fluorescent mixed chelate, and measuring the fluorescent mixed chelate, whereby the measurement of the label enable monitoring of the reaction of the binding target. A rapid assay for performing the above method including a first chelating molecule, a fluorescent-capable ion complexed with the first chelating molecule, a second chelating molecule for reacting with the fluorescent-capable ion complexed with the first chelating molecule, and a measuring device for measuring fluorescent resulting from the second is chelating molecule reacting with the fluorescent-capable ion complexed with the first chelating molecule.
    Type: Application
    Filed: June 28, 2002
    Publication date: January 9, 2003
    Inventors: Eric M. Priuska, Richard H. Smith, Judith L. Erb, James G. Downward, Otho E. Ulrich
  • Publication number: 20020137055
    Abstract: A method and apparatus for measuring binding between a plurality of molecules of a biological receptor protein and a plurality of molecules of a type which binds to said biological receptor is presented. Apparatus utilizes a sensor possessing a waveguide to which have been attached in close proximity to its surface, features resembling molecules having binding affinity for said biological receptor. Light is injected into said waveguide so as to produce an evanescent field at its surface. Molecules of receptor protein are tagged with a tag belonging to that class of chemicals which alters a characteristic of light, when said light passes through said chemical tag. Apparatus utilizes a rapid means of monitoring the change in optical signal coming from the waveguide as binding proceeds between tagged receptor protein and the binding molecular feature of the waveguide. This allows direct measurement of binding and dissociation rates between the receptor and the binding feature of the waveguide.
    Type: Application
    Filed: July 20, 2001
    Publication date: September 26, 2002
    Inventors: Judith L. Erb, James G. Downward, John R. Erb-Downward, James L. Witliff
  • Patent number: 6300082
    Abstract: A method and apparatus for measuring binding between a plurality of molecules of a biological receptor protein and a plurality of molecules of a type which binds to said biological receptor is presented. Apparatus utilizes a sensor possessing a waveguide to which have been attached in close proximity to its surface, features resembling molecules having binding affinity for said biological receptor. Light is injected into said waveguide so as to produce an evanescent field at its surface. Molecules of receptor protein are tagged with a tag belonging to that class of chemicals which alters a characteristic of light, when said light passes through said chemical tag. Apparatus utilizes a rapid means of monitoring the change in optical signal coming from the waveguide as binding proceeds between tagged receptor protein and the binding molecular feature of the waveguide. This allows direct measurement of binding and dissociation rates between the receptor and the binding feature of the waveguide.
    Type: Grant
    Filed: March 20, 1998
    Date of Patent: October 9, 2001
    Assignee: IA, Inc.
    Inventors: Judith L. Erb, James G. Downward, IV, John R. Erb-Downward, James L. Wittliff
  • Publication number: 20010023077
    Abstract: A method and apparatus for measuring binding between a plurality of molecules of a first type and a plurality of molecules of a second type is presented. Apparatus utilizes a sensor possessing a waveguide to which have been attached in close proximity to its surface, features resembling molecules of said first type. Light is injected into said waveguide so as to produce an evanescent field at its surface. Molecules of said second type are tagged with a tag belonging to that class of chemicals which alters a characteristic of light, when said light passes through said chemical tag. Apparatus utilizes a rapid means of monitoring the change in optical signal coming from said waveguide as binding proceeds between tagged molecules of type 2 and the feature resembling molecules of type 1 on said waveguide. This allows direct measurement of binding and dissociation rates between the two types of molecules.
    Type: Application
    Filed: April 12, 2001
    Publication date: September 20, 2001
    Inventors: Judith L. Erb, James G. Downward, John R. Erb-Downward, Otho Ulrich
  • Patent number: 6251688
    Abstract: A method and apparatus for measuring binding between a plurality of molecules of a first type and a plurality of molecules of a second type is presented. Apparatus utilizes a sensor possessing a waveguide to which have been attached in close proximity to its surface, features resembling molecules of said first type. Light is injected into said waveguide so as to produce an evanescent field at its surface. Molecules of said second type are tagged with a tag belonging to that class of chemicals which alters a characteristic of light, when said light passes through said chemical tag. Apparatus utilizes a rapid means of monitoring the change in optical signal coming from said waveguide as binding proceeds between tagged molecules of type 2 and the feature resembling molecules of type 1 on said waveguide. This allows direct measurement of binding and dissociation rates between the two types of molecules.
    Type: Grant
    Filed: March 20, 1998
    Date of Patent: June 26, 2001
    Assignee: IA, Inc.
    Inventors: Judith L. Erb, James G. Downward, John R. Erb-Downward, Otho Ulrich
  • Patent number: 5438417
    Abstract: A method and system for gauging deviations of a surface of a test part from a preselected nominal surface profile is disclosed. The system includes a support having a master surface that is substantially a matched or mating surface of the nominal surface profile of the test part and a thin layer of an attenuating medium such as a dye liquid between the master and test surfaces. Electromagnetic radiation is directed through the support and master surface and through the attenuating layer onto the reflective surface of the test part. An image sensor such as a camera is positioned to receive an image of the radiation reflected by the test part surface back through the attenuating layer and support, with the intensity of such radiation across the image varying as a function of the deviation of the test part surface from the nominal surface profile.
    Type: Grant
    Filed: August 17, 1993
    Date of Patent: August 1, 1995
    Assignee: KMS Fusion, Inc.
    Inventors: Garland F. Busch, James G. Downward, Paul G. Gottschalk, Theodore B. Ladewski, Charles D. Lysogorski
  • Patent number: 5289267
    Abstract: A method and system for gauging deviations of a surface of a test part from a preselected nominal surface profile is disclosed. The system includes a support having a master surface that is substantially a matched or mating surface of the nominal surface profile of the test part and a thin layer of an attenuating medium such as a dye liquid between the master and test surfaces. Electromagnetic radiation is directed through the support and master surface and through the attenuating layer onto the reflective surface of the test part. An image sensor such as a camera is positioned to receive an image of the radiation reflected by the test part surface back through the attenuating layer and support, with the intensity of such radiation across the image varying as a function of the deviation of the test part surface from the nominal surface profile.
    Type: Grant
    Filed: October 4, 1991
    Date of Patent: February 22, 1994
    Assignee: KMS Fusion, Inc.
    Inventors: Garland E. Busch, James G. Downward, Paul G. Gottschalk, Theodore B. Ladewski, Charles D. Lysogorski