Patents by Inventor Douglas W. Johnson

Douglas W. 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: 11926089
    Abstract: An apparatus is provided for assisting in affixing a screen protector to a display of an electronic device. The apparatus includes a base including a platform configured to support the electronic device. The apparatus includes a lid configured to cover at least a portion of the base and the supported electronic device. The lid includes an aperture.
    Type: Grant
    Filed: May 9, 2023
    Date of Patent: March 12, 2024
    Assignee: Otter Products, LLC
    Inventors: Richard W. Vinson, Zachariah J. Pickett, John P. Fitzgerald, Douglas A. Kempel, Jamie L. Johnson, Ross V. Bulkley, Adam J. Havens, Grady E. Barfoot
  • Patent number: 10133831
    Abstract: Predicting future hydrocarbon production. At least some of the illustrative embodiments are methods including: reading data regarding hydrocarbon production from a hydrocarbon producing field; producing at least one value indicative of future hydrocarbon production based on a data model and the data regarding hydrocarbon production; displaying, on a display device of a computer system, an indication of historic data regarding hydrocarbon production; and displaying, on the display device, an indication of the at least one value indicative of future hydrocarbon production.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: November 20, 2018
    Assignee: LANDMARK GRAPHICS CORPORATION
    Inventors: Gustavo A. Carvajal, Alvin S. Cullick, Hatem Nasr, Douglas W. Johnson
  • Publication number: 20150051892
    Abstract: Predicting future hydrocarbon production. At least some of the illustrative embodiments are methods including: reading data regarding hydrocarbon production from a hydrocarbon producing field; producing at least one value indicative of future hydrocarbon production based on a data model and the data regarding hydrocarbon production; displaying, on a display device of a computer system, an indication of historic data regarding hydrocarbon production; and displaying, on the display device, an indication of the at least one value indicative of future hydrocarbon production.
    Type: Application
    Filed: March 13, 2013
    Publication date: February 19, 2015
    Applicant: Landmark Graphics Corporation
    Inventors: Gustavo A. Carvajal, Alvin S. Cullick, Hatem Nasr, Douglas W. Johnson
  • Patent number: 8947802
    Abstract: A method comprises generating first and second magnetic field components in a magnetic medium, the second magnetic field component substantially opposite the first. A pattern is written onto the magnetic medium, and a signal is generated by reading the pattern. The magnitude of the second magnetic field component is controlled based on an asymmetry of the signal.
    Type: Grant
    Filed: February 3, 2014
    Date of Patent: February 3, 2015
    Assignee: Imation Corp.
    Inventors: Douglas W. Johnson, Roni J. Dornfeld, Stephen J. Rothermel
  • Patent number: 8867157
    Abstract: The present disclosure relates to a perpendicular pole head for creating a perpendicular magnetic moment in a concentrated pattern for writing the pattern on perpendicular magnetic media, such as BaFe based media. The pole head can have flux concentrators in the shape of the written pattern, which can be repeatedly applied to a moving magnetic medium to create a timing pattern on the media, e.g., a servo timing pattern.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: October 21, 2014
    Assignee: Imation Corp.
    Inventors: Douglas W. Johnson, Larold Olson, Yung Yip, Stephen J. Rothermel
  • Patent number: 8867167
    Abstract: A system comprises a first tapered core configured for positioning adjacent a first surface of a magnetic medium, and a second tapered core configured for positioning adjacent a second surface of the magnetic medium, opposite the first tapered core along a travel direction of the magnetic medium. Each of the first and second tapered cores has a transverse width defined with respect to the magnetic medium, where the transverse width decreases from a first end of the tapered core to a second end of the tapered core, the second end forming a pole face adjacent the magnetic medium.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: October 21, 2014
    Assignee: Imation Corp.
    Inventors: Stephen J. Rothermel, Douglas W. Johnson
  • Patent number: 8817415
    Abstract: Magnetic storage tape and techniques for erasing and writing to magnetic storage tape having a perpendicular squareness greater than 50 percent and a longitudinal squareness less than 50 percent are described. In general, the magnetic tape may be biased with a remanence magnetization, or magnetic orientation, in any direction. One or two head systems may use various magnetic field patterns to create the desired remanence magnetization. Servo marks may have a remanence magnetization in an opposite magnetic orientation than that of the remaining bias on the servo track, e.g., substantially perpendicular to the magnetic tape. In some examples, a write head may alternate the direction of the magnetic field to continuously bias and write servo patterns to the magnetic tape. In addition, a symmetrical servo mark may be created in the magnetic tape with a write head having a gap width approximately equal to the length of the servo mark.
    Type: Grant
    Filed: June 13, 2011
    Date of Patent: August 26, 2014
    Assignee: Imation Corp.
    Inventors: Larold L. Olson, Douglas W. Johnson, Michael P. Sharrock
  • Patent number: 8804276
    Abstract: Magnetic storage tape and techniques for erasing and writing to magnetic storage tape having a perpendicular squareness greater than 50 percent and a longitudinal squareness less than 50 percent are described. In general, the magnetic tape may be biased with a remanence magnetization, or magnetic orientation, in any direction. One or two head systems may use various magnetic field patterns to create the desired remanence magnetization. Servo marks may have a remanence magnetization in an opposite magnetic orientation than that of the remaining bias on the servo track, e.g., substantially perpendicular to the magnetic tape. In some examples, a write head may alternate the direction of the magnetic field to continuously bias and write servo patterns to the magnetic tape. In addition, a symmetrical servo mark may be created in the magnetic tape with a write head having a gap width approximately equal to the length of the servo mark.
    Type: Grant
    Filed: June 13, 2011
    Date of Patent: August 12, 2014
    Assignee: Imation Corp.
    Inventors: Larold L. Olson, Douglas W. Johnson, Michael P. Sharrock
  • Patent number: 8797674
    Abstract: Magnetic storage tape and techniques for erasing and writing to magnetic storage tape having a perpendicular squareness greater than 50 percent and a longitudinal squareness less than 50 percent are described. In general, the magnetic tape may be biased with a remanence magnetization, or magnetic orientation, in any direction. One or two head systems may use various magnetic field patterns to create the desired remanence magnetization. Servo marks may have a remanence magnetization in an opposite magnetic orientation than that of the remaining bias on the servo track, e.g., substantially perpendicular to the magnetic tape. In some examples, a write head may alternate the direction of the magnetic field to continuously bias and write servo patterns to the magnetic tape. In addition, a symmetrical servo mark may be created in the magnetic tape with a write head having a gap width approximately equal to the length of the servo mark.
    Type: Grant
    Filed: June 13, 2011
    Date of Patent: August 5, 2014
    Assignee: Imation Corp.
    Inventors: Larold L. Olson, Douglas W. Johnson, Michael P. Sharrock
  • Patent number: 8767342
    Abstract: Magnetic storage tape and techniques for erasing and writing to magnetic storage tape having a perpendicular squareness greater than 50 percent and a longitudinal squareness less than 50 percent are described. In general, the magnetic tape may be biased with a remanence magnetization, or magnetic orientation, in any direction. One or two head systems may use various magnetic field patterns to create the desired remanence magnetization. Servo marks may have a remanence magnetization in an opposite magnetic orientation than that of the remaining bias on the servo track, e.g., substantially perpendicular to the magnetic tape. In some examples, a write head may alternate the direction of the magnetic field to continuously bias and write servo patterns to the magnetic tape. In addition, a symmetrical servo mark may be created in the magnetic tape with a write head having a gap width approximately equal to the length of the servo mark.
    Type: Grant
    Filed: June 13, 2011
    Date of Patent: July 1, 2014
    Assignee: Imation Corp.
    Inventors: Larold L. Olson, Douglas W. Johnson, Michael P. Sharrock
  • Patent number: 8760802
    Abstract: A system comprises a magnetic medium with a first magnetic gap adjacent a first side and a second magnetic gap adjacent a second side, opposite the first magnetic gap. The first magnetic gap generates first longitudinal and perpendicular field components. The second magnetic gap generates second longitudinal and perpendicular field components. The first and second longitudinal field components are substantially aligned along a recording layer of the magnetic medium, and the first and second perpendicular field components are substantially opposed across the recording layer of the magnetic medium.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: June 24, 2014
    Assignee: Imation Corp.
    Inventors: Stephen J. Rothermel, Douglas W. Johnson
  • Publication number: 20140146412
    Abstract: A method comprises generating first and second magnetic field components in a magnetic medium, the second magnetic field component substantially opposite the first. A pattern is written onto the magnetic medium, and a signal is generated by reading the pattern. The magnitude of the second magnetic field component is controlled based on an asymmetry of the signal.
    Type: Application
    Filed: February 3, 2014
    Publication date: May 29, 2014
    Applicant: Imation Corp.
    Inventors: Douglas W. Johnson, Roni J. Dornfeld, Stephen J. Rothermel
  • Publication number: 20140139944
    Abstract: Storage media, systems, and techniques for storing and accessing information in a servo band are described. For example, the distances between adjacent servo patterns written to the servo band may be varied to represent the supplemental information stored in the servo band. Each of the varied distances may be selected to represent physical parameters of the storage medium, servo recording conditions, or data unrelated to the servo patterns, for example. The supplemental information may be recovered from the servo band by demodulating a signal generated from a servo read head. The distances between each servo pattern in the track may be calculated from the time periods detected in the signal between servo marks of subsequent servo patterns. In some examples, a controller may adjust one or more parameters associated with reading or writing servo marks or data marks of the storage media.
    Type: Application
    Filed: November 16, 2012
    Publication date: May 22, 2014
    Inventors: Douglas W. Johnson, Larold L. Olson
  • Patent number: 8643968
    Abstract: A method comprises generating first and second magnetic field components in a magnetic medium, the second magnetic field component substantially opposite the first. A pattern is written onto the magnetic medium, and a signal is generated by reading the pattern. The magnitude of the second magnetic field component is controlled based on an asymmetry of the signal.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: February 4, 2014
    Assignee: Imation Corp.
    Inventors: Douglas W. Johnson, Roni J. Dornfeld, Stephen J. Rothermel
  • Publication number: 20130286510
    Abstract: A system comprises a magnetic medium with a first magnetic gap adjacent a first side and a second magnetic gap adjacent a second side, opposite the first magnetic gap. The first magnetic gap generates first longitudinal and perpendicular field components. The second magnetic gap generates second longitudinal and perpendicular field components. The first and second longitudinal field components are substantially aligned along a recording layer of the magnetic medium, and the first and second perpendicular field components are substantially opposed across the recording layer of the magnetic medium.
    Type: Application
    Filed: March 12, 2013
    Publication date: October 31, 2013
    Applicant: Imation Corp.
    Inventors: Stephen J. Rothermel, Douglas W. Johnson
  • Publication number: 20130286504
    Abstract: A system comprises a first tapered core configured for positioning adjacent a first surface of a magnetic medium, and a second tapered core configured for positioning adjacent a second surface of the magnetic medium, opposite the first tapered core along a travel direction of the magnetic medium. Each of the first and second tapered cores has a transverse width defined with respect to the magnetic medium, where the transverse width decreases from a first end of the tapered core to a second end of the tapered core, the second end forming a pole face adjacent the magnetic medium.
    Type: Application
    Filed: March 12, 2013
    Publication date: October 31, 2013
    Applicant: IMATION CORP.
    Inventors: Stephen J. Rothermel, Douglas W. Johnson
  • Publication number: 20130286501
    Abstract: A method comprises generating first and second magnetic field components in a magnetic medium, the second magnetic field component substantially opposite the first. A pattern is written onto the magnetic medium, and a signal is generated by reading the pattern. The magnitude of the second magnetic field component is controlled based on an asymmetry of the signal.
    Type: Application
    Filed: March 12, 2013
    Publication date: October 31, 2013
    Applicant: Imation Corp.
    Inventors: Douglas W. Johnson, Roni J. Dornfeld, Stephen J. Rothermel
  • Publication number: 20130265672
    Abstract: The present disclosure relates to a perpendicular pole head for creating a perpendicular magnetic moment in a concentrated pattern for writing the pattern on perpendicular magnetic media, such as BaFe based media. The pole head can have flux concentrators in the shape of the written pattern, which can be repeatedly applied to a moving magnetic medium to create a timing pattern on the media, e.g., a servo timing pattern.
    Type: Application
    Filed: January 30, 2013
    Publication date: October 10, 2013
    Applicant: Imation Corp.
    Inventors: Douglas W. Johnson, Larold Olson, Yung Yip, Stephen J. Rothermel
  • Publication number: 20120314320
    Abstract: Magnetic storage tape and techniques for erasing and writing to magnetic storage tape having a perpendicular squareness greater than 50 percent and a longitudinal squareness less than 50 percent are described. In general, the magnetic tape may be biased with a remanence magnetization, or magnetic orientation, in any direction. One or two head systems may use various magnetic field patterns to create the desired remanence magnetization. Servo marks may have a remanence magnetization in an opposite magnetic orientation than that of the remaining bias on the servo track, e.g., substantially perpendicular to the magnetic tape. In some examples, a write head may alternate the direction of the magnetic field to continuously bias and write servo patterns to the magnetic tape. In addition, a symmetrical servo mark may be created in the magnetic tape with a write head having a gap width approximately equal to the length of the servo mark.
    Type: Application
    Filed: June 13, 2011
    Publication date: December 13, 2012
    Applicant: Imation Corp.
    Inventors: Larold L. Olson, Douglas W. Johnson, Michael P. Sharrock
  • Publication number: 20120314319
    Abstract: Magnetic storage tape and techniques for erasing and writing to magnetic storage tape having a perpendicular squareness greater than 50 percent and a longitudinal squareness less than 50 percent are described. In general, the magnetic tape may be biased with a remanence magnetization, or magnetic orientation, in any direction. One or two head systems may use various magnetic field patterns to create the desired remanence magnetization. Servo marks may have a remanence magnetization in an opposite magnetic orientation than that of the remaining bias on the servo track, e.g., substantially perpendicular to the magnetic tape. In some examples, a write head may alternate the direction of the magnetic field to continuously bias and write servo patterns to the magnetic tape. In addition, a symmetrical servo mark may be created in the magnetic tape with a write head having a gap width approximately equal to the length of the servo mark.
    Type: Application
    Filed: June 13, 2011
    Publication date: December 13, 2012
    Applicant: Imation Corp.
    Inventors: Larold L. Olson, Douglas W. Johnson, Michael P. Sharrock