Patents by Inventor Joachim Ahner

Joachim Ahner 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: 20220193821
    Abstract: A method includes emitting an ultra-short pulse laser beam from a laser source. The method also includes forming the laser beam into a plurality of discrete beams via an optical array, where intersecting discrete beams form a structured light pattern comprising a plurality of voxels. A first subset of the plurality of voxels defining a line and a second subset of the plurality of voxels lie outside the line. The method also includes forming a plurality of voids in a substrate by aligning the structured light pattern onto the substrate, each voxel of the plurality of voxels forming a discrete void in the substrate, each void separated by the substrate. The method includes, after forming the plurality of voids in the substrate at a plurality of different positions, forming an article by separating one portion of the substrate from a base portion of the substrate.
    Type: Application
    Filed: December 20, 2021
    Publication date: June 23, 2022
    Applicant: Seagate Technology LLC
    Inventors: Joachim Ahner, David Tung
  • Patent number: 11367462
    Abstract: A non-metallic media substrate includes a disc-shaped substrate body having at least one media storage surface on a face thereof. The substrate body has a center opening having an inner diameter and an outer diameter surface, and the substrate body has a thickness. The substrate further includes an annular groove at the outer diameter of the media substrate, the annular groove having chamfered edges and an internal concavity extending toward the inner diameter.
    Type: Grant
    Filed: January 28, 2019
    Date of Patent: June 21, 2022
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Thomas Larson Greenberg, Robin Andrew Davies, Clay Harrison Heberly, Joachim Ahner
  • Patent number: 10388320
    Abstract: Provided herein are apparatus and methods for inspecting articles for features using interference in light reflected from the articles. The interference may be used to detect, distinguish, and/or map features of articles, which features may include, but are not limited to, surface defects. In at least one embodiment, an apparatus and method includes conveying parallel light along a primary axis through a telecentric lens and a light-splitting device, respectively; illuminating a majority of a surface of an article with the parallel light; conveying reflected light from the surface of the article along the primary axis back through the light-splitting device and the telecentric lens, respectively; and recording interference resulting from a combination of light comprising at least the reflected light from the surface of the article.
    Type: Grant
    Filed: April 6, 2015
    Date of Patent: August 20, 2019
    Assignee: Seagate Technology LLC
    Inventors: Joachim Ahner, David Tung
  • Patent number: 10056146
    Abstract: The system includes a data storage medium comprising cells, an excitation circuit, and an emitter. The cells arranged in a three dimensional space. The excitation circuit excites each cell independently. Exciting a cell changes an optical property of the cell. The emitter emits a first beam onto a first cell during a first excitation period to orient electrical charges within the first cell to a first oriented value and intensity of electric field to a first intensity value. The emitter emits a second beam onto a second cell during a second excitation period to orient electrical charges within the second cell to a second oriented value and intensity of electric field to a second intensity value. The first and second cells maintain the first and the second oriented values and the first and second intensity values after the first and second excitation periods are over, respectively.
    Type: Grant
    Filed: January 25, 2017
    Date of Patent: August 21, 2018
    Assignee: Seagate Technology LLC
    Inventors: Joachim Ahner, David Marcus Tung
  • Patent number: 9997189
    Abstract: A system includes a data storage medium and a shockwave generator. The data storage medium includes cells and a plurality of layers. Each cell is configured to store information therein. At least two cells are arranged in a horizontal plane within a same layer of the plurality of layers of the data storage medium and at least two cells are arranged in a vertical plane in different layers of the plurality of layers of the data storage medium. The shockwave generator is configured to generate a shockwave signal that travels through a layer of the plurality of layers of the data storage medium. A target cell within the layer stores information responsive to a beam emitted from an emitter targeting the target cell as the shockwave signal is passing through the target cell. The target cell maintains the information after the shockwave signal exits through the target cell.
    Type: Grant
    Filed: January 25, 2017
    Date of Patent: June 12, 2018
    Assignee: Seagate Technology LLC
    Inventors: Joachim Ahner, David Marcus Tung
  • Patent number: 9984751
    Abstract: A system includes a data storage medium comprising layers, an excitation circuit, and an emitter. Each layer comprises cells arranged in a horizontal plane. Cells in different layers are arranged in a vertical plane of the data storage medium. The excitation circuit excites a layer during excitation period. Exciting the layer changes an optical property of the layer during the excitation period. The emitter emits a first and a second beam onto a first and a second cell of the layer being excited during the excitation period to orient electrical charges within the first and the second cell to a first and second oriented values and their intensity to a first and second intensity values respectively. The first and second cells maintain the first and second oriented values and the first and second intensity values after the excitation period is over or in absence of the layer being excited.
    Type: Grant
    Filed: January 25, 2017
    Date of Patent: May 29, 2018
    Assignee: Seagate Technology LLC
    Inventors: Joachim Ahner, David Marcus Tung
  • Publication number: 20180130533
    Abstract: The system includes a data storage medium comprising cells, an excitation circuit, and an emitter. The cells arranged in a three dimensional space. The excitation circuit excites each cell independently. Exciting a cell changes an optical property of the cell. The emitter emits a first beam onto a first cell during a first excitation period to orient electrical charges within the first cell to a first oriented value and intensity of electric field to a first intensity value. The emitter emits a second beam onto a second cell during a second excitation period to orient electrical charges within the second cell to a second oriented value and intensity of electric field to a second intensity value. The first and second cells maintain the first and the second oriented values and the first and second intensity values after the first and second excitation periods are over, respectively.
    Type: Application
    Filed: January 25, 2017
    Publication date: May 10, 2018
    Inventors: Joachim Ahner, David Marcus Tung
  • Publication number: 20180130531
    Abstract: A system includes a data storage medium and a shockwave generator. The data storage medium includes cells and a plurality of layers. Each cell is configured to store information therein. At least two cells are arranged in a horizontal plane within a same layer of the plurality of layers of the data storage medium and at least two cells are arranged in a vertical plane in different layers of the plurality of layers of the data storage medium. The shockwave generator is configured to generate a shockwave signal that travels through a layer of the plurality of layers of the data storage medium. A target cell within the layer stores information responsive to a beam emitted from an emitter targeting the target cell as the shockwave signal is passing through the target cell. The target cell maintains the information after the shockwave signal exits through the target cell.
    Type: Application
    Filed: January 25, 2017
    Publication date: May 10, 2018
    Inventors: Joachim Ahner, David Marcus Tung
  • Publication number: 20180130532
    Abstract: A system includes a data storage medium comprising layers, an excitation circuit, and an emitter. Each layer comprises cells arranged in a horizontal plane. Cells in different layers are arranged in a vertical plane of the data storage medium. The excitation circuit excites a layer during excitation period. Exciting the layer changes an optical property of the layer during the excitation period. The emitter emits a first and a second beam onto a first and a second cell of the layer being excited during the excitation period to orient electrical charges within the first and the second cell to a first and second oriented values and their intensity to a first and second intensity values respectively. The first and second cells maintain the first and second oriented values and the first and second intensity values after the excitation period is over or in absence of the layer being excited.
    Type: Application
    Filed: January 25, 2017
    Publication date: May 10, 2018
    Inventors: Joachim Ahner, David Marcus Tung
  • Patent number: 9911446
    Abstract: A three dimensional magnetic recording media can consist of a coupling layer disposed between first and second vertically stacked recording layers. The coupling layer can provide exchange or antiferromagnetic coupling and allow the respective recording layers to be individually heat selected to different first and second coupling strengths through application of heat from a heat source.
    Type: Grant
    Filed: July 3, 2017
    Date of Patent: March 6, 2018
    Assignee: Seagate Technology LLC
    Inventors: Joachim Ahner, David M. Tung, Ganping Ju, Philip L. Steiner, Thomas P. Nolan, Thomas Y. Chang, Pin-Wei Huang, Kaizhong Gao, Timothy Klemmer, David S. Kuo
  • Patent number: 9792945
    Abstract: An apparatus includes a first storage cell with an electrical property. The first storage cell is configured to change the electrical property in response to a first light energy, and to maintain the change to the electrical property. The first storage cell is also configured to alter the change to the electrical property in response to a second light energy, and to maintain the alteration to the change to the electrical property. A second storage cell disposed over the first storage cell in a vertical plane of the first storage cell. A third storage cell disposed adjacent to the first storage cell in a horizontal plane of the first storage cell.
    Type: Grant
    Filed: November 7, 2016
    Date of Patent: October 17, 2017
    Assignee: Seagate Technology LLC
    Inventors: Joachim Ahner, David Marcus Tung
  • Patent number: 9697857
    Abstract: A three dimensional magnetic recording media can consist of a coupling layer disposed between first and second vertically stacked recording layers. The coupling layer can provide exchange or antiferromagnetic coupling and allow the respective recording layers to be individually heat selected to different first and second coupling strengths through application of heat from a heat source.
    Type: Grant
    Filed: May 26, 2016
    Date of Patent: July 4, 2017
    Assignee: Seagate Technology LLC
    Inventors: Joachim Ahner, David M. Tung, Ganping Ju, Philip L. Steiner, Thomas P. Nolan, Thomas Y. Chang, Pin-Wei Huang, Kaizhong Gao, Timothy Klemmer, David S. Kuo
  • Publication number: 20170025149
    Abstract: Provided herein are apparatus and methods for inspecting articles for features using interference in light reflected from the articles. The interference may be used to detect, distinguish, and/or map features of articles, which features may include, but are not limited to, surface defects. In at least one embodiment, an apparatus and method includes conveying parallel light along a primary axis through a telecentric lens and a light-splitting device, respectively; illuminating a majority of a surface of an article with the parallel light; conveying reflected light from the surface of the article along the primary axis back through the light-splitting device and the telecentric lens, respectively; and recording interference resulting from a combination of light comprising at least the reflected light from the surface of the article.
    Type: Application
    Filed: April 6, 2015
    Publication date: January 26, 2017
    Inventors: Joachim AHNER, David TUNG
  • Patent number: 7916513
    Abstract: A data storage device comprising a ferroelectric layer, a perovskite structure, and at least one sensor, where the perovskite structure has a polarity discontinuity configured to generate capacitance voltages in the perovskite structure based on polarization charges of the ferroelectric material, and where the at least one sensor is configured to read the capacitance voltages from the perovskite structure.
    Type: Grant
    Filed: November 5, 2008
    Date of Patent: March 29, 2011
    Assignee: Seagate Technology LLC
    Inventors: Shan Hu, Tong Zhao, Florin Zavaliche, Joachim Ahner, Stephen John Wrazien, Martin Gerard Forrester
  • Patent number: 7821808
    Abstract: A data storage system comprises first and second storage layers, a reader and a writer. The first storage layer has a first coercive potential and a first polarization. The second storage layer has a second coercive potential that is less than the first coercive potential, and a second polarization that is coupled to the first polarization. The writer performs a write operation in which a write potential is imposed across the first and second storage layers, such that the first coercive potential is exceeded across the first storage layer and the second coercive potential is exceeded across the second storage layer. The reader performs a read operation in which a read potential is imposed across the first and second storage layers, such that the second coercive potential is exceeded across the second storage layer and the first coercive potential is not exceeded across the first storage layer.
    Type: Grant
    Filed: January 30, 2009
    Date of Patent: October 26, 2010
    Assignee: Seagate Technology LLC
    Inventors: Tong Zhao, Martin Gerard Forrester, Florin Zavaliche, Joachim Ahner
  • Publication number: 20100195369
    Abstract: A data storage system comprises first and second storage layers, a reader and a writer. The first storage layer has a first coercive potential and a first polarization. The second storage layer has a second coercive potential that is less than the first coercive potential, and a second polarization that is coupled to the first polarization. The writer performs a write operation in which a write potential is imposed across the first and second storage layers, such that the first coercive potential is exceeded across the first storage layer and the second coercive potential is exceeded across the second storage layer. The reader performs a read operation in which a read potential is imposed across the first and second storage layers, such that the second coercive potential is exceeded across the second storage layer and the first coercive potential is not exceeded across the first storage layer.
    Type: Application
    Filed: January 30, 2009
    Publication date: August 5, 2010
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: Tong Zhao, Martin Gerard Forrester, Florin Zavaliche, Joachim Ahner
  • Publication number: 20100110754
    Abstract: A data storage device comprising a ferroelectric layer, a perovskite structure, and at least one sensor, where the perovskite structure has a polarity discontinuity configured to generate capacitance voltages in the perovskite structure based on polarization charges of the ferroelectric material, and where the at least one sensor is configured to read the capacitance voltages from the perovskite structure.
    Type: Application
    Filed: November 5, 2008
    Publication date: May 6, 2010
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: Shan Hu, Tong Zhao, Florin Zavaliche, Joachim Ahner, Stephen John Wrazien, Martin Gerard Forrester
  • Publication number: 20070041233
    Abstract: A method for improving the stability of ferroelectric storage devices comprises: providing a ferroelectric storage medium including a film of ferroelectric material; and repeatedly applying a voltage to the film of ferroelectric material to improve the stability of polarized bits in the film of ferroelectric material. An apparatus that is used to perform the method is also provided.
    Type: Application
    Filed: August 19, 2005
    Publication date: February 22, 2007
    Applicant: Seagate Technology LLC
    Inventors: Andreas Roelofs, Martin Forrester, Joachim Ahner
  • Publication number: 20060177705
    Abstract: A magnetic recording medium for high-density recording, having a doped interlayer to preserve the uniformity and ordering of the magnetic nanoparticles in its recording layer. The interlayer is doped with a high electronegativity material. The dopant atoms in the interlayer interact with the ferromagnetic nanoparticles to promote the formation of a homogeneous, ordered monolayer of nanoparticles in the recording layer. In addition, the high electronegative property of the dopant atoms holds the nanoparticles in place during the subsequent annealing process to prevent sintering and disordering damage. In one embodiment, the dopant is a halogen or non-halogen material having a high electronegativity, which is not polymerized to the matrix material in the interlayer. The matrix material may be polymerized. An example of a doped interlayer is a fluorinated carbon film.
    Type: Application
    Filed: February 9, 2005
    Publication date: August 10, 2006
    Inventors: Joachim Ahner, Nisha Shukla, Dieter Weller
  • Publication number: 20060099462
    Abstract: A storage device includes a storage medium, a controller and a read/write head. The storage medium includes a substrate with a plurality of nano-structures arranged in an ordered pattern on a surface of the substrate. The controller is coupled to the storage medium. The controller has a read structure that extends over the substrate and a positioner adapted to adjust a position of the read structure relative to the substrate. The read/write head is mounted on the read structure and positioned over the substrate during operation. The read/write head is adapted to read and to write information to and from the plurality of nano-structures.
    Type: Application
    Filed: November 5, 2004
    Publication date: May 11, 2006
    Applicant: Seagate Technology LLC
    Inventors: Joachim Ahner, Nisha Shukla, Dieter Weller