Patents by Inventor Steven A. Mastain

Steven A. Mastain 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: 10102870
    Abstract: A magnetic read head including a first read element magnetically coupled to a bottom shield; a second read element magnetically coupled to a top shield; a magnetic shielding structure that magnetically shields the first read element from the second read element; and a first electrical contact electrically coupled to the bottom shield, a second electrical contact electrically coupled to the top shield and a third electrical contact electrically coupled to the magnetic shielding structure.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: October 16, 2018
    Assignee: Seagate Technology LLC
    Inventor: Steven A. Mastain
  • Patent number: 9842740
    Abstract: When opaque films are deposited on semi-conductor wafers, underlying features may be concealed. In accordance with one implementation, such concealed features may be re-exposed via an ablation recovery process. One ablation recovery process entails aligning an energy source with a target position on a first surface of a semiconductor wafer based on position information retrieved from a second opposite surface of the semiconductor wafer, and firing a beam of the energy source to ablate opaque material at the target position and to expose a recovery feature underlying the opaque material.
    Type: Grant
    Filed: August 25, 2015
    Date of Patent: December 12, 2017
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Steven A. Mastain, Terry A. Jacobson
  • Publication number: 20170098459
    Abstract: A magnetic read head including a first read element magnetically coupled to a bottom shield; a second read element magnetically coupled to a top shield; a magnetic shielding structure that magnetically shields the first read element from the second read element; and a first electrical contact electrically coupled to the bottom shield, a second electrical contact electrically coupled to the top shield and a third electrical contact electrically coupled to the magnetic shielding structure.
    Type: Application
    Filed: December 19, 2016
    Publication date: April 6, 2017
    Inventor: Steven A. Mastain
  • Patent number: 9524737
    Abstract: A magnetic read head including a first read element magnetically coupled to a bottom shield; a second read element magnetically coupled to a top shield; a magnetic shielding structure that magnetically shields the first read element from the second read element; and a first electrical contact electrically coupled to the bottom shield, a second electrical contact electrically coupled to the top shield and a third electrical contact electrically coupled to the magnetic shielding structure.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: December 20, 2016
    Assignee: Seagate Technology LLC
    Inventor: Steven A. Mastain
  • Patent number: 9418684
    Abstract: A read head with at least two separately addressable read transducers that are coplanar in a cross track direction. The read transducers have a cross track width, wr, and a center-to-center separation distance between the two read transducers either greater than 3wr or the distance of two tracks of an associated medium in the cross track direction.
    Type: Grant
    Filed: October 4, 2013
    Date of Patent: August 16, 2016
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Jason Bryce Gadbois, Steven A. Mastain, James K. Price
  • Publication number: 20160059355
    Abstract: When opaque films are deposited on semi-conductor wafers, underlying features may be concealed. In accordance with one implementation, such concealed features may be re-exposed via an ablation recovery process. One ablation recovery process entails aligning an energy source with a target position on a first surface of a semiconductor wafer based on position information retrieved from a second opposite surface of the semiconductor wafer, and firing a beam of the energy source to ablate opaque material at the target position and to expose a recovery feature underlying the opaque material.
    Type: Application
    Filed: August 25, 2015
    Publication date: March 3, 2016
    Inventors: Steven A. Mastain, Terry A. Jacobson
  • Patent number: 9111557
    Abstract: An apparatus such as a magnetic recording head with at least two separately addressable read transducers that are coplanar in a cross track direction. The apparatus includes first coplanar electrical contacts respectively disposed on and in electrical contact with first surfaces of the at least two read transducers and an electrically insulating magnetic material disposed between the electrical contacts.
    Type: Grant
    Filed: October 4, 2013
    Date of Patent: August 18, 2015
    Assignee: Seagate Technology LLC
    Inventors: Jason Bryce Gadbois, Steven A. Mastain, James K. Price
  • Publication number: 20150170678
    Abstract: A magnetic read head including a first read element magnetically coupled to a bottom shield; a second read element magnetically coupled to a top shield; a magnetic shielding structure that magnetically shields the first read element from the second read element; and a first electrical contact electrically coupled to the bottom shield, a second electrical contact electrically coupled to the top shield and a third electrical contact electrically coupled to the magnetic shielding structure.
    Type: Application
    Filed: December 13, 2013
    Publication date: June 18, 2015
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventor: Steven A. Mastain
  • Publication number: 20150098152
    Abstract: An apparatus such as a magnetic recording head with at least two separately addressable read transducers that are coplanar in a cross track direction. The apparatus includes first coplanar electrical contacts respectively disposed on and in electrical contact with first surfaces of the at least two read transducers and an electrically insulating magnetic material disposed between the electrical contacts.
    Type: Application
    Filed: October 4, 2013
    Publication date: April 9, 2015
    Applicant: Seagate Technology LLC
    Inventors: Jason Bryce Gadbois, Steven A. Mastain, James K. Price
  • Publication number: 20150098151
    Abstract: A read head with at least two separately addressable read transducers that are coplanar in a cross track direction. The read transducers have a cross track width, wr, and a center-to-center separation distance between the two read transducers either greater than 3wr or the distance of two tracks of an associated medium in the cross track direction.
    Type: Application
    Filed: October 4, 2013
    Publication date: April 9, 2015
    Applicant: Seagate Technology LLC
    Inventors: Jason Bryce Gadbois, Steven A. Mastain, James K. Price
  • Publication number: 20030039065
    Abstract: A magnetic recording head having an air bearing surface comprises a writer having a substantially planar single piece top pole, a shared pole and a conductive coil. The top pole and shared pole are separated by a write gap region. A magnetic stud is positioned adjacent the write gap region near the air bearing surface. The magnetic stud provides a uniform magnetic flux supply to the write gap region. The magnetic stud has a variable height along the air bearing surface. An inner surface of the magnetic stud substantially conforms to an outer surface of the conductive coil. The shared pole includes a recess, and at least a portion of the conductive coil is positioned in the recess. The recess in the shared pole is filled with an insulator that substantially surrounds the portion of the conductive coil positioned in the recess. A capping layer is formed on the portion of the conductive coil positioned in the recess.
    Type: Application
    Filed: October 15, 2002
    Publication date: February 27, 2003
    Inventors: Alexander M. Shukh, Edward S. Murdock, Steven A. Mastain, James K. Price
  • Patent number: 6477007
    Abstract: A magnetic recording head having an air bearing surface comprises a writer having a substantially planar single piece top pole, a shared pole and a conductive coil. The top pole and shared pole are separated by a write gap region. A magnetic stud is positioned adjacent the write gap region near the air bearing surface. The magnetic stud provides a uniform magnetic flux supply to the write gap region. The magnetic stud has a variable height along the air bearing surface. An inner surface of the magnetic stud substantially conforms to an outer surface of the conductive coil. The shared pole includes a recess, and at least a portion of the conductive coil is positioned in the recess. The recess in the shared pole is filled with an insulator that substantially surrounds the portion of the conductive coil positioned in the recess. A capping layer is formed on the portion of the conductive coil positioned in the recess.
    Type: Grant
    Filed: August 29, 2000
    Date of Patent: November 5, 2002
    Assignee: Seagate Technology LLC
    Inventors: Alexander M. Shukh, Edward S. Murdock, Steven A. Mastain, James K. Price
  • Patent number: 6381833
    Abstract: A method for forming a top magnetic pole of an inductive magnetic head being begins with the step of forming a photolithographic material over a layer of insulating material at a hill region and gap region of the inductive magnetic head formed on a wafer and over a waste region of the wafer. Second, a mask is patterned on the photolithographic material defining a paddle region over the hill region, a feeder region over the waste region, and a trench region between the feeder region and the paddle region. The trench region extends over the gap region. Third solvent is admitted into the feeder region to flow in a laminar flow through the trench region to the paddle region to form the mask and expose a surface of the layer of insulating material in the paddle and trench regions of the mask.
    Type: Grant
    Filed: April 15, 1999
    Date of Patent: May 7, 2002
    Assignee: Seagate Technology LLC
    Inventors: Steven A. Mastain, Wallace A. Peck, Diana M. Simplair, Kurt A. Rothstein
  • Patent number: 6016242
    Abstract: A mask forms a top magnetic pole piece of an inductive magnetic head having a layer of insulating material over a hill region and a gap region on a wafer. The mask comprises a layer of photolithographic material on the insulating material and a waste region of the wafer and includes a first aperture exposing the insulating material to define a paddle region of the pole piece over the hill region and a trench over the gap region. A second aperture is connected to the first aperture to define a feeder region over the waste region that funnels solvent to and through the trench and establishes laminar flow of solvent through the trench. Solvent is admitted into the feeder region for laminar flow through the trench region to form the mask and expose a surface of the layer of insulating material in the paddle and trench regions of the mask. The top pole piece defines a gap at an air bearing surface of the head having an average gap width not greater than 1.
    Type: Grant
    Filed: August 13, 1998
    Date of Patent: January 18, 2000
    Assignee: Seagate Technology, Inc.
    Inventors: Steven A. Mastain, Wallace A. Peck, Diana M. Simplair, Kurt A. Rothstein