Patents by Inventor Joseph Michael Stephan

Joseph Michael Stephan 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: 11763847
    Abstract: The present disclosure relates to a recording head that includes a write pole extending to a media-facing surface of the recording head; a near-field transducer extending to a media-facing surface of the recording head; a trailing return pole positioned between the write pole and the trailing edge; and a recessed portion that is recessed relative to the media-facing surface by a distance when no power is applied to the recording head. The trailing return pole is located in the recessed portion. The present disclosure also includes relates methods of making and detecting contact between a recording head and recording medium.
    Type: Grant
    Filed: July 6, 2022
    Date of Patent: September 19, 2023
    Assignee: Seagate Technology LLC
    Inventors: David James Ellison, James D. Kiely, Neil Zuckerman, Edwin F. Rejda, Joseph Michael Stephan
  • Patent number: 10049689
    Abstract: Methods that include depositing a first layer over the entire surface of a structure, the structure having a magnetic reader and a magnetic writer, wherein the magnetic reader and the magnetic writer are positioned adjacent to each other on a substrate and the magnetic writer includes a near field transducer (NFT); depositing a second layer over the entire surface of the first layer; depositing a photoresist material layer over the entire surface of the second layer, the photoresist material layer having a bottom surface in contact with the second layer and an opposing top surface; exposing the photoresist material layer to radiation through the bottom surface of the photoresist material layer via the NFT to form a first exposed region; and exposing the photoresist material layer to radiation through the top surface of the photoresist material layer to form a second exposed region.
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: August 14, 2018
    Assignee: Seagate Technology LLC
    Inventors: Joseph Michael Stephan, Douglas H. Cole, Daniel Richard Buettner
  • Publication number: 20180040341
    Abstract: A magnetic device including: a magnetic reader; a magnetic writer; and a variable overcoat, the variable overcoat positioned over at least the magnetic reader and writer, the variable overcoat having an overcoat layer, the overcoat layer having a substantially constant thickness and material; and at least one disparate overcoat portion, the disparate overcoat portion having a different thickness, a different material, or both, than the overcoat layer.
    Type: Application
    Filed: October 13, 2017
    Publication date: February 8, 2018
    Inventors: Edwin Frank Rejda, Joseph Michael Stephan, The Ngoc Nguyen, Neil Zuckerman, Gary J. Kunkel, Douglas H. Cole, Michael A. Seigler, Chris Rea
  • Patent number: 9830937
    Abstract: A laser is configured to emit light along a substrate-parallel plane along a first surface of the laser. An etched facet is on an emitting end of a lasing cavity and an etched mirror is on another end of the lasing cavity. An etched shaping mirror redirects light received from the etched facet in a direction normal to the substrate-parallel plane. A slider comprises an optical input coupler configured to couple the light from the laser into a waveguide of the slider. At least one protrusion is disposed on the laser and at least one recession is disposed on the slider, the at least one protrusion and the at least one recession configured to align the laser with the slider to allow the light to be coupled into the optical input coupler.
    Type: Grant
    Filed: January 18, 2017
    Date of Patent: November 28, 2017
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Roger L. Hipwell, Jr., Jon Paul Hurley, Scott Eugene Olson, Ralph Kevin Smith, Joseph Michael Stephan
  • Patent number: 9792935
    Abstract: A magnetic device including: a magnetic reader; a magnetic writer; and a variable overcoat, the variable overcoat positioned over at least the magnetic reader and writer, the variable overcoat having an overcoat layer, the overcoat layer having a substantially constant thickness and material; and at least one disparate overcoat portion, the disparate overcoat portion having a different thickness, a different material, or both, than the overcoat layer.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: October 17, 2017
    Assignee: Seagate Technology LLC
    Inventors: Edwin Frank Rejda, Joseph Michael Stephan, The Ngoc Nguyen, Neil Zuckerman, Gary J. Kunkel, Douglas H. Cole, Michael A. Seigler, Chris Rea
  • Publication number: 20170061994
    Abstract: Methods that include depositing a first layer over the entire surface of a structure, the structure having a magnetic reader and a magnetic writer, wherein the magnetic reader and the magnetic writer are positioned adjacent to each other on a substrate and the magnetic writer includes a near field transducer (NFT); depositing a second layer over the entire surface of the first layer; depositing a photoresist material layer over the entire surface of the second layer, the photoresist material layer having a bottom surface in contact with the second layer and an opposing top surface; exposing the photoresist material layer to radiation through the bottom surface of the photoresist material layer via the NFT to form a first exposed region; and exposing the photoresist material layer to radiation through the top surface of the photoresist material layer to form a second exposed region.
    Type: Application
    Filed: August 26, 2016
    Publication date: March 2, 2017
    Inventors: Joseph Michael Stephan, Douglas H. Cole, Daniel Richard Buettner
  • Patent number: 9460746
    Abstract: An air-bearing surface of a slider is coated with a photoresist having a high optical absorbance at or near an operational wavelength of the slider. Light is directed at a target wavelength through an entry of a waveguide integrated into the slider. The light exiting the waveguide forms a feature through the photoresist, the feature proximate a near-field transducer of the slider. A sub-micron pattern is formed using the feature.
    Type: Grant
    Filed: May 28, 2015
    Date of Patent: October 4, 2016
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Daniel Richard Buettner, Joseph Michael Stephan, Douglas Hampton Cole, The Ngoc Nguyen
  • Patent number: 9431035
    Abstract: A slider comprising a body having an air bearing surface (ABS), wherein the ABS extends between a leading edge and a trailing edge of the body. The slider comprises a transducer supported by the body and positioned near the trailing edge, wherein the transducer comprises a pole tip partially extending from the body. The slider comprises a surface defined in the body and forming the trailing edge, wherein the surface comprises a plurality of segments. A first segment of the plurality of segments extends from the ABS and is offset from a portion of the pole tip recessed within the body. The first segment is offset from the pole tip portion by a lesser extent than any other of the plurality of segments.
    Type: Grant
    Filed: August 9, 2013
    Date of Patent: August 30, 2016
    Assignee: Seagate Technology LLC
    Inventors: Gordon Merle Jones, Edwin Frank Redja, Joseph Michael Stephan
  • Publication number: 20150348578
    Abstract: An air-bearing surface of a slider is coated with a photoresist having a high optical absorbance at or near an operational wavelength of the slider. Light is directed at a target wavelength through an entry of a waveguide integrated into the slider. The light exiting the waveguide forms a feature through the photoresist, the feature proximate a near-field transducer of the slider. A sub-micron pattern is formed using the feature.
    Type: Application
    Filed: May 28, 2015
    Publication date: December 3, 2015
    Inventors: Daniel Richard Buettner, Joseph Michael Stephan, Douglas Hampton Cole
  • Patent number: 9196274
    Abstract: Disclosed is an embodiment of a suspension for a disk drive having a slider configured for bonding with a gimbal using an adhesive. Embodiments of the slider include one or more cavities in a portion of a slider mounting surface of the slider. The one or more cavities are configured for increasing a volume of the adhesive between the slider mounting surface and the gimbal. A method of forming the one or more cavities on the slider mounting surface, and bonding together the gimbal and the slider is disclosed.
    Type: Grant
    Filed: December 16, 2013
    Date of Patent: November 24, 2015
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Joseph Michael Stephan, Gordon Merle Jones, Douglas Hampton Cole, Christopher Unger
  • Publication number: 20150333476
    Abstract: Two microelectronic components can be attached by flowing solder between solderable pads patterned on interfacing surfaces. According to one implementation, the microelectronic components can include the solderable pads patterned onto first respective surfaces and other surface features patterned onto second respective surfaces. In another implementation, the solderable pads can include an adhesion layer, a diffusion barrier layer, and a surface oxidation layer.
    Type: Application
    Filed: July 28, 2015
    Publication date: November 19, 2015
    Inventors: Lijuan Zhong, Joseph Michael Stephan, The Ngoc Nguyen, Carl Kristian Lunde
  • Patent number: 9165584
    Abstract: A slider for a head to read data from or write data to a magnetic media is disclosed. The slider includes an air bearing surface including raised bearing surface(s) elevated above recessed bearing surface(s) to pressurize air flow along the air bearing surface to provide a fly height for the slider above the media. The raised bearing surfaces are formed along one or more raised substrate structures etched from a substrate body. The slider includes one or more insets inset into the one or more raised substrate structures formed of an inset material having a different coefficient of expansion than a substrate material of the slider to compensate for temperature and/or humidity changes.
    Type: Grant
    Filed: July 9, 2013
    Date of Patent: October 20, 2015
    Assignee: Seagate Technology LLC
    Inventors: Igor Sytine, Jeremy Adam Thurn, Joseph Michael Stephan
  • Publication number: 20150170689
    Abstract: Disclosed is an embodiment of a suspension for a disk drive having a slider configured for bonding with a gimbal using an adhesive. Embodiments of the slider include one or more cavities in a portion of a slider mounting surface of the slider. The one or more cavities are configured for increasing a volume of the adhesive between the slider mounting surface and the gimbal. A method of forming the one or more cavities on the slider mounting surface, and bonding together the gimbal and the slider is disclosed.
    Type: Application
    Filed: December 16, 2013
    Publication date: June 18, 2015
    Applicant: Seagate Technology LLC
    Inventors: Joseph Michael Stephan, Gordon Merle Jones, Douglas Hampton Cole, Christopher Unger
  • Patent number: 8982923
    Abstract: An apparatus includes a slider with a cavity in a trailing end of the slider. A laser is positioned in the cavity and has an output facet positioned adjacent to a first wall of the cavity. A cap is connected to the trailing end of the slider and covers the laser.
    Type: Grant
    Filed: August 22, 2013
    Date of Patent: March 17, 2015
    Assignee: Seagate Technology LLC
    Inventors: Douglas Cole, Lijuan Zhong, Roger Lee Hipwell, Jr., Joseph Michael Stephan, Scott Eugene Olson, Tanya Jegeris Snyder, Yongjun Zhao
  • Publication number: 20150040380
    Abstract: A slider comprising a body having an air bearing surface (ABS), wherein the ABS extends between a leading edge and a trailing edge of the body. The slider comprises a transducer supported by the body and positioned near the trailing edge, wherein the transducer comprises a pole tip partially extending from the body. The slider comprises a surface defined in the body and forming the trailing edge, wherein the surface comprises a plurality of segments. A first segment of the plurality of segments extends from the ABS and is offset from a portion of the pole tip recessed within the body. The first segment is offset from the pole tip portion by a lesser extent than any other of the plurality of segments.
    Type: Application
    Filed: August 9, 2013
    Publication date: February 12, 2015
    Applicant: Seagate Technology LLC
    Inventors: Gordon Merle Jones, Edwin Frank Redja, Joseph Michael Stephan
  • Publication number: 20150036467
    Abstract: An apparatus includes a slider with a cavity in a trailing end of the slider. A laser is positioned in the cavity and has an output facet positioned adjacent to a first wall of the cavity. A cap is connected to the trailing end of the slider and covers the laser.
    Type: Application
    Filed: August 22, 2013
    Publication date: February 5, 2015
    Applicant: Seagate Technology LLC
    Inventors: Douglas Cole, Lijuan Zhong, Roger Lee Hipwell, JR., Joseph Michael Stephan, Scott Eugene Olson, Tanya Jegeris Snyder, Yongjun Zhao
  • Publication number: 20150015989
    Abstract: A slider for a head to read data from or write data to a magnetic media is disclosed. The slider includes an air bearing surface including raised bearing surface(s) elevated above recessed bearing surface(s) to pressurize air flow along the air bearing surface to provide a fly height for the slider above the media. The raised bearing surfaces are formed along one or more raised substrate structures etched from a substrate body. The slider includes one or more insets inset into the one or more raised substrate structures formed of an inset material having a different coefficient of expansion than a substrate material of the slider to compensate for temperature and/or humidity changes.
    Type: Application
    Filed: July 9, 2013
    Publication date: January 15, 2015
    Inventors: Igor Sytine, Jeremy Adam Thurn, Joseph Michael Stephan
  • Publication number: 20140177405
    Abstract: A magnetic device including: a magnetic reader; a magnetic writer; and a variable overcoat, the variable overcoat positioned over at least the magnetic reader and writer, the variable overcoat having an overcoat layer, the overcoat layer having a substantially constant thickness and material; and at least one disparate overcoat portion, the disparate overcoat portion having a different thickness, a different material, or both, than the overcoat layer.
    Type: Application
    Filed: March 8, 2013
    Publication date: June 26, 2014
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: Edwin Frank Rejda, Joseph Michael Stephan, The Ngoc Nguyen, Neil Zuckerman, Gary J. Kunkel, Douglas H. Cole, Michael A. Seigler, Chris Rea
  • Publication number: 20130277863
    Abstract: Two microelectronic components can be attached by flowing solder between solderable pads patterned on interfacing surfaces. According to one implementation, the microelectronic components can include the solderable pads patterned onto first respective surfaces and other surface features patterned onto second respective surfaces. In another implementation, the solderable pads can include an adhesion layer, a diffusion barrier layer, and surface oxidation layer.
    Type: Application
    Filed: March 4, 2013
    Publication date: October 24, 2013
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: Lijuan Zhong, Joseph Michael Stephan, The Ngoc Nguyen, Carl Kristian Lunde
  • Patent number: 8532157
    Abstract: A method includes: positioning a laser in the cavity in an end of a slider, wherein the laser has an output facet positioned adjacent to a first wall of the cavity to define a first gap between the output facet and the first wall of the cavity, and filling at least a portion of the first gap adjacent to the output facet. An apparatus including a slider including a cavity in a trailing end of the slider, a laser positioned in the cavity and having an output facet positioned adjacent to a first wall of the cavity to define a first gap between the output facet and the first wall of the cavity, and a sealing material filling at least a portion of the first gap adjacent to the output facet is also provided.
    Type: Grant
    Filed: February 22, 2011
    Date of Patent: September 10, 2013
    Assignee: Seagate Technology LLC
    Inventors: Douglas Cole, Lijuan Zhong, Roger Lee Hipwell, Jr., Joseph Michael Stephan, Scott Eugene Olson, Tanya Jegeris Snyder, Yongjun Zhao