Patents by Inventor Jay M. Johnson

Jay M. 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: 12115718
    Abstract: Systems and methods for manufacturing elongate medical devices including internal components embedded between multiple jacket layers. The system including a heating cartridge, a heating element, a filament handling system, a substrate handling system, and a controller to feed and melt each of the filaments for forming the multiple jacket layers. The system may include a single heating cartridge adapted to make multiple passes to form a first and second jacket or multiple heating cartridges that sequentially form a first and second jacket.
    Type: Grant
    Filed: June 20, 2023
    Date of Patent: October 15, 2024
    Assignee: Medtronic, Inc.
    Inventors: Jonathan E. Baxter, Kristin M. Johnson, Gregory N. Nesseth, Jay T. Rassat
  • Patent number: 9365426
    Abstract: A process for producing a nanostructured carbon material including the steps of providing a metal or metalloid carbide substrate and reacting the carbide substrate with a reactive gas to form the nanostructured carbon material, the reactive gas and the carbide substrate being added during the reacting step.
    Type: Grant
    Filed: July 22, 2013
    Date of Patent: June 14, 2016
    Assignee: SCNTE, LLC
    Inventors: Bill L. Riehl, Bonnie D. Riehl, Lee R. Riehl, Jim R. Riehl, Jay M. Johnson
  • Publication number: 20140030184
    Abstract: A process for producing a nanostructured carbon material including the steps of providing a metal or metalloid carbide substrate and reacting the carbide substrate with a reactive gas to form the nanostructured carbon material, the reactive gas and the carbide substrate being added during the reacting step.
    Type: Application
    Filed: July 22, 2013
    Publication date: January 30, 2014
    Applicant: SCNTE, LLC
    Inventors: Bill L. Riehl, Bonnie D. Riehl, Lee R. Riehl, Jim R. Riehl, Jay M. Johnson
  • Publication number: 20110102002
    Abstract: An active electrode structure is disclosed that includes fullerenes produced by a carbo-thermal carbide conversion of a conductive carbide without a metal catalyst. Also disclosed is an electrode that includes a fullerene covalently bonded to a conductive carbide, the fullerene being an aligned or non-aligned array. The carbide substrate having a surface coating of covalently bonded fullerenes is characterized in that the peak separation of a cyclic voltammogram for the conductive carbide having a surface layer of the fullerene is less than about 150 mV at a scan rate of 5 mV/s in a 4 mM ferricyanide, 1M KCl solution. The fullerene may include about 50% or less non-crystalline carbon and about 5% or less of a transition metal that interferes with the ability of the active electrode structure to transfer electrons or detect an analyte.
    Type: Application
    Filed: September 23, 2010
    Publication date: May 5, 2011
    Inventors: Bill L. Riehl, Bonnie D. Riehl, Edward E. King, Jay M. Johnson, Kevin T. Schlueter
  • Publication number: 20100252450
    Abstract: An active electrode structure is disclosed that includes fullerenes produced by conversion from a carbide. Also disclosed is an electrode that includes a fullerene covalently bonded to a carbide, the fullerene being an aligned or non-aligned array. The fullerene is included in an active electrode structure of the electrode that also includes about 50% or less non-crystalline carbon and about 5% or less of a transition metal that interferes with the ability of the active electrode structure to transfer electrons or detect an analyte. The active electrode substrate or the electrode may be included in a sensor.
    Type: Application
    Filed: April 20, 2010
    Publication date: October 7, 2010
    Inventors: Bill L. Riehl, Bonnie D. Riehl, Edward E. King, Jay M. Johnson, Kevin T. Schlueter
  • Patent number: 6020052
    Abstract: An improved laminated enzyme containing membrane for polarographic sensors and methods of making these membranes are disclosed. The laminated membrane comprises an outer, support layer having pores therein of greater than about 300 angstrom units in diameter and this outer membrane has a pore density of less than 6.times.10.sup.8 pores/cm.sup.2. The porosity of the outer membrane may be on the order of 0.001-0.2%. An enzyme layer is interposed between the support layer and an inner, barrier layer; the latter positioned near the working electrode of the polarographic cell. The enzyme layer comprises a buffer solution dispersed therein wherein the molarity of the buffer solution is between about 1.times.10.sup.-6 to 0.1 M. The enzyme layer is highly dense as measured by a molar response ratio of ferrocyanide:H.sub.2 O.sub.2 of less than about 0.05.
    Type: Grant
    Filed: January 28, 1998
    Date of Patent: February 1, 2000
    Assignee: YSI Incorporated
    Inventor: Jay M. Johnson
  • Patent number: 5766839
    Abstract: Methods for forming thin layer barrier layer films for use in enzyme containing laminated membranes and membranes formed thereby are disclosed. The barrier layers exhibit improved acetaminophen rejection and comprise a cellulose acetate/cellulose acetate butyrate blend. The thin layer barrier membranes are formed from a plural solvent containing solution and are cured at a critical temperature of about 102.degree.-114.degree. F., most preferably at about 106.degree. F.-114.degree. F. while traveling through a circulating hot air oven. Alternatively, the membranes can be cured at room temperature or in a stagnant oven at temperatures of from room temperature to about 175.degree. C. (350.degree. F.) for a period of from about 10 minutes to 1 hour.
    Type: Grant
    Filed: March 19, 1996
    Date of Patent: June 16, 1998
    Assignee: YSI Incorporated
    Inventors: Jay M. Johnson, Jeffrey L. Huntington
  • Patent number: 5520788
    Abstract: Improved Newman type enzyme containing laminated membranes are disclosed for use in conjunction with polarographic cells to measure analyte concentration in solutions. The laminated membranes comprise a semipermeable outer, support layer including super large pores of greater than about 200 .ANG. in diameter. The outer layer preferably comprises pore sizes of about 380-750 .ANG. in diameter and has a percentage porosity of about 0.005-0.2%.
    Type: Grant
    Filed: January 17, 1995
    Date of Patent: May 28, 1996
    Assignee: The Yellow Springs Instrument Company, Inc.
    Inventor: Jay M. Johnson
  • Patent number: 5429726
    Abstract: Improved methods and compositions are provided to inhibit interference from formaldehyde in polarographic analytic methods. In the enzymatic oxidation of methanol to hydrogen peroxide and formaldehyde, formaldehyde serves as an interfering agent in systems where the oxygen consumed or the hydrogen peroxide produced is polarographically measured. To inhibit this interference, an amine-containing formaldehyde scavenger is added to the test system. Preferably, the scavenger comprises a polyalkyleneimine such as polyethyleneimine having a molecular weight of between about 200-1,000,000 amu. The invention is particularly well-suited for use in polarographic analytical apparatus wherein laminated membrane type enzyme electrodes are used to perform amperometric measurement with alcohol oxidase enzyme used as the oxidoreductase enzyme.
    Type: Grant
    Filed: July 5, 1994
    Date of Patent: July 4, 1995
    Assignee: The Yellow Springs Instrument Company, Inc.
    Inventors: Jay M. Johnson, Robert B. Spokane
  • Patent number: 4404066
    Abstract: A method for control of relative enzyme activity for analytical purposes. The activity of a multisubstrate enzyme may be controlled as a function of the electrical potential applied to the enzyme. The enzyme is preferrably incorporated into a thin layer electrochemical cell laminate having exterior membrane layers and an interior enzyme layer. A control electrode located within the enzyme layer applies an electrical potential to the enzyme. An intermediate electron transfer agent may be used to transfer electrons to and from the enzyme and the control electrode.
    Type: Grant
    Filed: May 13, 1982
    Date of Patent: September 13, 1983
    Assignee: The Yellow Springs Instrument Company
    Inventor: Jay M. Johnson
  • Patent number: 4356074
    Abstract: The relative specificity of the enzyme galactose oxidase for various substrates is controlled as a function of the electrical potential applied to the enzyme. The enzyme is incorporated into a thin layer electrochemical cell laminate having exterior membrane layers and an interior enzyme layer. An electrode located within the enzyme layer applies varying electrical potentials to the enzyme. An intermediate electron transfer agent may be used to transfer electrons to and from the enzyme and electrode.
    Type: Grant
    Filed: August 25, 1980
    Date of Patent: October 26, 1982
    Assignee: The Yellow Springs Instrument Company, Inc.
    Inventor: Jay M. Johnson
  • Patent number: 4220503
    Abstract: Galactose oxidase enzyme can effectively be used for the determination of a number of different substances if activated and stabilized in accordance with the present invention. Activation is accomplished with a redox agent such as ferricyanide. Stabilization of the activated galactose oxidase is accomplished by addition of cupric ion. Upon stabilization, activated, immobilized galactose oxidase enzymes may be stored and reused for at least 25 days.
    Type: Grant
    Filed: April 28, 1978
    Date of Patent: September 2, 1980
    Assignee: The Yellow Springs Instrument Co., Inc.
    Inventor: Jay M. Johnson
  • Patent number: D350179
    Type: Grant
    Filed: December 10, 1993
    Date of Patent: August 30, 1994
    Inventor: Jay M. Johnson