Patents by Inventor Doug Lin

Doug Lin 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).

  • Main pole layer with at least tow sacrificial layers and a gap layer
    Patent number: 9214167
    Abstract: In accordance with one embodiment, an apparatus may be implemented that comprises a main pole layer of magnetic material, a non-magnetic gap layer of material above the main pole layer, an etched first sacrificial layer of material above the non-magnetic gap layer of material, and a second sacrificial layer of material above the etched first sacrificial layer of material.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: December 15, 2015
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Wei Tian, Venkateswara Rao Inturi, Doug Lin, Huaqing Yin, Jiaoming Qiu
  • Write head having non-magnetic write gap seed layer, and method
    Patent number: 9147407
    Abstract: In accordance with one embodiment, an apparatus includes a main pole layer of magnetic material; a second layer of magnetic material; a first gap layer of non-magnetic material disposed between the main pole layer and the second layer of magnetic material; a second gap layer of non-magnetic material disposed between the main pole layer and the second layer of magnetic material; wherein the second gap layer of non-magnetic material is disposed directly adjacent to the second layer of magnetic material. In accordance with one embodiment, this allows the gap to serve as a non-magnetic seed for the second layer of magnetic material. A method of manufacturing such a device is also described.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: September 29, 2015
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Wei Tian, Venkateswara Rao Inturi, Doug Lin, Huaqing Yin, Jiaoming Qiu
  • GAP BETWEEN MAGNETIC MATERIALS
    Publication number: 20140268415
    Abstract: In accordance with one embodiment, a method may be implemented by depositing a non-magnetic gap layer of material above a main pole layer of magnetic material; depositing a sacrificial layer of material above the non-magnetic gap layer of material; etching a portion of the sacrificial layer of material while not entirely removing the sacrificial layer of material; and depositing additional sacrificial material to the etched sacrificial layer.
    Type: Application
    Filed: March 12, 2013
    Publication date: September 18, 2014
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: Wei Tian, Venkateswara Rao Inturi, Doug Lin, Huaqing Yin, Jiaoming Qiu
  • NON-MAGNETIC SEED LAYER METHOD AND APPARATUS
    Publication number: 20140272471
    Abstract: In accordance with one embodiment, an apparatus can be configured that includes a main pole layer of magnetic material; a second layer of magnetic material; a first gap layer of non-magnetic material disposed between the main pole layer and the second layer of magnetic material; a second gap layer of non-magnetic material disposed between the main pole layer and the second layer of magnetic material; and wherein the second gap layer of non-magnetic material is disposed directly adjacent to the second layer of magnetic material. In accordance with one embodiment, this allows the gap to serve as a non-magnetic seed for the second layer of magnetic material. In accordance with one embodiment, this allows the gap to serve as a non-magnetic seed for the second layer of magnetic material. In accordance with one embodiment, a method of manufacturing such a device may also be utilized.
    Type: Application
    Filed: March 12, 2013
    Publication date: September 18, 2014
    Applicant: Seagate Technology LLC
    Inventors: Wei Tian, Venkateswara Rao Inturi, Doug Lin, Huaqing Yin, Jiaoming Qiu