Patents by Inventor Leonard Stephens

Leonard Stephens 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: 20240093897
    Abstract: An interface module configured to control a motor in an HVAC system is provided. The interface module includes a processor coupled in communication with a memory. The processor is configured to wirelessly receive configuration data from a wireless device, store the wirelessly received configuration data in the memory, determine a first operating parameter at which to operate the motor based on the configuration data and at least one signal received from a first device, and control the motor in accordance with the first operating parameter.
    Type: Application
    Filed: September 16, 2022
    Publication date: March 21, 2024
    Inventors: Ryan Keith Stephens, Bryan James Stout, Jeffrey Leonard Underwood, Christopher Allen Mohalley
  • Patent number: 10380096
    Abstract: Various embodiments herein each include at least one of systems, methods, and software for data migration, such as when migrating a database from one form to a next and as may be performed at a time of software system version migration. One example embodiment, in the form of a method, includes loading a database migration script that includes a prior class from a software system prior to an upgrade of the software system and a new class from the software system after the upgrade to the software system. The method proceeds by then calling methods of the prior class to copy database data from database tables impacted by the database migration script to a memory device and executing the database migration script. The method then calls methods of the new class to copy the database data from the memory device back to the database.
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: August 13, 2019
    Assignee: NCR Corporation
    Inventors: Gregor Leonard Stephen, Stuart Birse
  • Publication number: 20180150497
    Abstract: Various embodiments herein each include at least one of systems, methods, and software for data migration, such as when migrating a database from one form to a next and as may be performed at a time of software system version migration. One example embodiment, in the form of a method, includes loading a database migration script that includes a prior class from a software system prior to an upgrade of the software system and a new class from the software system after the upgrade to the software system. The method proceeds by then calling methods of the prior class to copy database data from database tables impacted by the database migration script to a memory device and executing the database migration script. The method then calls methods of the new class to copy the database data from the memory device back to the database.
    Type: Application
    Filed: November 30, 2016
    Publication date: May 31, 2018
    Inventors: Gregor Leonard Stephen, Stuart Birse
  • Patent number: 9765084
    Abstract: A process for the production of a refined dianhydrosugar-containing product is disclosed. The process includes controlled continuous crystallization of the dianhydrosugar-containing product to produce a solution saturated with the dianhydrosugar. The saturated solution is mechanically separated, for example by centrifugation, and the crystalline product is washed. The only solvent used is water. The dianhydrosugar-containing product is upgraded to at least 99.8% purity and recovery is 95% or greater. Recrystallization of the dianhydrosugar of 99.8% purity results in an ultra pure product containing at least 99.99% dianhydrosugar.
    Type: Grant
    Filed: April 9, 2009
    Date of Patent: September 19, 2017
    Assignee: Iowa Corn Promotion Board
    Inventors: Charles Guthrie Moyers, James Kermit Withrow, John Leonard Stephens
  • Publication number: 20090259056
    Abstract: A process for the production of a refined dianhydrosugar-containing product is disclosed. The process includes controlled continuous crystallization of the dianhydrosugar-containing product to produce a solution saturated with the dianhydrosugar. The saturated solution is mechanically separated, for example by centrifugation, and the crystalline product is washed. The only solvent used is water. The dianhydrosugar-containing product is upgraded to at least 99.8% purity and recovery is 95% or greater. Recrystallization of the dianhydrosugar of 99.8% purity results in an ultra pure product containing at least 99.99% dianhydrosugar.
    Type: Application
    Filed: April 9, 2009
    Publication date: October 15, 2009
    Applicant: IOWA CORN PROMOTION BOARD
    Inventors: Charles Guthrie Moyers, James Kermit Withrow, John Leonard Stephens
  • Publication number: 20040097326
    Abstract: A variable ratio transmission having an input (14) and an output (21) and being of the epicyclic type involving a sun element (17, 16)), a ring element (21) and a planet carrier element (22) in each of at least first (11) and second (12) unequal co-axial epicyclic assemblies, a second rotating element (22) of the first assembly (11) and a second rotating element (22) of the second assembly (12) being constrained to rotate at a common angular velocity, and control means (25) for progessively changing the gear ratio applied to a load connected to the first rotating element (21) of the first assembly (11), characterised in that the first rotating elements (21) are unequal pairs of the same mechanical elements of the respective assemblies (11, 12) and in conjunction with respective second rotating elements (22) each represents different respective fixed gear ratios relative to the input (14) and the output (21) of the transmission, the second rotating elements (22) are unequal pairs of the same mechanical element
    Type: Application
    Filed: September 16, 2003
    Publication date: May 20, 2004
    Inventor: Malcom Leonard Stephen Dean
  • Patent number: 5921775
    Abstract: An endodontic system of shaping instruments, irrigation cannulas, filling instruments and materials designed to safely create specific tapers of root canal preparations and to clean, dry, seal, and restore them. The shaping instruments are a series of reamers, files, and handpiece burs, made of stainless steel, nickel-titanium, or other alloys, which impart several different specifically-tapered apertures in root canals. The instruments have one or more safety features to eliminate perforating curved roots, including shorter flute length as the angle of taper increases and variable sharpness along the length of the flute portion, as well as variable flute pitch along the length of the flute portion to maximize cutting efficiency and resistance to breakage, and a rounded tip to eliminate ledging. The hand instruments have a handle designed to optimize use of the instruments in apically directed, rotary cutting motions.
    Type: Grant
    Filed: May 24, 1996
    Date of Patent: July 13, 1999
    Inventor: Leonard Stephen Buchanan
  • Patent number: 5897316
    Abstract: An endodontic system of shaping instruments, irrigation cannulas, filling instruments and materials designed to safely create specific tapers of root canal preparations and to clean, dry, seal, and restore them. The shaping instruments are a series of reamers, files, and handpiece burs, made of stainless steel, nickel-titanium, or other alloys, which impart several different specifically-tapered apertures in root canals. The instruments have one or more safety features to eliminate perforating curved roots, including shorter flute length as the angle of taper increases and variable sharpness along the length of the flute portion, as well as variable flute pitch along the length of the flute portion to maximize cutting efficiency and resistance to breakage, and a rounded tip to eliminate ledging. The hand instruments have a handle designed to optimize use of the instruments in apically directed, rotary cutting motions.
    Type: Grant
    Filed: April 28, 1994
    Date of Patent: April 27, 1999
    Inventor: Leonard Stephen Buchanan
  • Patent number: 5842861
    Abstract: An endodontic system of shaping instruments, irrigation cannulas, filling instruments and materials designed to safely create specific tapers of root canal preparations and to clean, dry, seal, and restore them. The shaping instruments are a series of reamers, files, and handpiece burs, made of stainless steel, nickel-titanium, or other alloys, which impart several different specifically-tapered apertures in root canals. The instruments have one or more safety features to eliminate perforating curved roots, including shorter flute length as the angle of taper increases and variable sharpness along the length of the flute portion, as well as variable flute pitch along the length of the flute portion to maximize cutting efficiency and resistance to breakage, and a rounded tip to eliminate ledging. The hand instruments have a handle designed to optimize use of the instruments in apically directed, rotary cutting motions.
    Type: Grant
    Filed: May 24, 1996
    Date of Patent: December 1, 1998
    Inventor: Leonard Stephen Buchanan
  • Patent number: 5836764
    Abstract: An endodontic system of shaping instruments, irrigation cannulas, filling instruments and materials designed to safely create specific tapers of root canal preparations and to clean, dry, seal, and restore them. The shaping instruments are a series of reamers, files, and handpiece burs, made of stainless steel, nickel-titanium, or other alloys, which impart several different specifically-tapered apertures in root canals. The instruments have one or more safety features to eliminate perforating curved roots, including shorter flute length as the angle of taper increases and variable sharpness along the length of the flute portion, as well as variable flute pitch along the length of the flute portion to maximize cutting efficiency and resistance to breakage, and a rounded tip to eliminate ledging. The hand instruments have a handle designed to optimize use of the instruments in apically directed, rotary cutting motions.
    Type: Grant
    Filed: May 24, 1996
    Date of Patent: November 17, 1998
    Inventor: Leonard Stephen Buchanan
  • Patent number: 5752825
    Abstract: An endodontic system of shaping instruments, irrigation cannulas, filling instruments and materials designed to safely create specific tapers of root canal preparations and to clean, dry, seal, and restore them. The shaping instruments are a series of reamers, files, and handpiece burs, made of stainless steel, nickel-titanium, or other alloys, which impart several different specifically-tapered apertures in root canals. The instruments have one or more safety features to eliminate perforating curved roots, including shorter flute length as the angle of taper increases and variable sharpness along the length of the flute portion, as well as variable flute pitch along the length of the flute portion to maximize cutting efficiency and resistance to breakage, and a rounded tip to eliminate ledging. The hand instruments have a handle designed to optimize use of the instruments in apically directed, rotary cutting motions.
    Type: Grant
    Filed: May 24, 1996
    Date of Patent: May 19, 1998
    Inventor: Leonard Stephen Buchanan
  • Patent number: 4478601
    Abstract: A fuel block containing concentrated combustibles is provided in a stackable, clean package which is readily ignited, and after an initial ignition burn, is consumed from the inside out with minimal smoke release. In the preferred form of the invention, ends and sides of the block have parallel faces, but the base is concave to permit an air entry passageway when the block is so positioned and burned on any generally flat surface. The top or opposite face is congruently convex to the bottom face permitting stacking of individual blocks both in storage and use. When stacked in combustion use, interior air passages or flues both horizontal and vertical, through the exterior faces of the individual block align to provide a "coking" action, as is also the case when burning of an individual block alone.The block is formed principally from coal mine particulates, coke particulates, etc.
    Type: Grant
    Filed: January 6, 1983
    Date of Patent: October 23, 1984
    Inventor: Leonard Stephens
  • Patent number: RE39174
    Abstract: An endodontic system of shaping instruments, irrigation cannulas, filling instruments and materials designed to safely create specific tapers of root canal preparations and to clean, dry, seal, and restore them. The shaping instruments are a series of reamers, files, and handpiece burs, made of stainless steel, nickel-titanium, or other alloys, which impart several different specifically-tapered apertures in root canals. The instruments have one or more safety features to eliminate perforating curved roots, including shorter flute length as the angle of taper increases and variable sharpness along the length of the flute portion, as well as variable flute pitch along the length of the flute portion to maximize cutting efficiency and resistance to breakage, and a rounded tip to eliminate ledging. The hand instruments have a handle designed to optimize use of the instruments in apically directed, notary cutting motions.
    Type: Grant
    Filed: April 26, 2001
    Date of Patent: July 11, 2006
    Inventor: Leonard Stephen Buchanan