Patents by Inventor Lars H. Ahlen

Lars H. Ahlen 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: 11651785
    Abstract: Methods are described for forming a mounting surface on a slider body. In one method, an adhesion layer can be deposited on a top surface of a slider body. A first photolithography cycle deposits a first metal layer having a first thickness of at least 8 ?m. A second photolithography cycle deposits a second metal layer having a second thickness of at least 8 ?m over the first metal layer. The first and second layer form a mounting support on the top surface. In another method, the top surface is etched to form a mounting support.
    Type: Grant
    Filed: April 25, 2022
    Date of Patent: May 16, 2023
    Assignee: Seagate Technology LLC
    Inventors: Joseph M. Stephan, Robert Aaron Newman, Lars H. Ahlen, Aaron Michael Collins
  • Patent number: 11355144
    Abstract: A slider includes a slider body with an air-bearing surface and a top surface opposing the air-bearing surface. A plurality of slider bond pads are disposed on or parallel to the top surface and proximate to or at a trailing edge of the slider. The plurality of slider bond pads have an exposed surface facing away from the top surface of the slider body. One or more mounting supports extend from the top surface to a distance of at least 12 ?m above the exposed surface of the plurality of slider bond pads.
    Type: Grant
    Filed: May 11, 2021
    Date of Patent: June 7, 2022
    Assignee: Seagate Technology LLC
    Inventors: Joseph M. Stephan, Robert Aaron Newman, Lars H. Ahlen, Aaron Michael Collins
  • Patent number: 9087530
    Abstract: A transducer having an external contact surface includes a writer and a contact member. The writer has a portion extendable relative to an adjacent portion of the external contact surface. The contact member surrounds at least a portion of the extendable writer portion and is spaced from the extendable writer portion. The coefficient of thermal expansion of the contact member is approximately equal to the coefficient of thermal expansion of the extendable writer portion.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: July 21, 2015
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Ladislav R. Pust, Lars H. Ahlen, Edwin F. Rejda, David C. Seets, Lance E. Stover, Dian Song, Feng Y. Wang
  • Patent number: 8520339
    Abstract: This disclosure is directed to air-bearing sliders used in magnetic storage systems that employ a trench arranged between a transducing head connected to a slider body and a leading edge of the slider body. The trench is configured to divert air passing over an air-bearing surface of the slider body away from the transducing head.
    Type: Grant
    Filed: September 4, 2009
    Date of Patent: August 27, 2013
    Assignee: Seagate Technology LLC
    Inventors: Paul J. Sonda, Lars H. Ahlen
  • Publication number: 20130000107
    Abstract: A transducer having an external contact surface includes a writer and a contact member. The writer has a portion extendable relative to an adjacent portion of the external contact surface. The contact member surrounds at least a portion of the extendable writer portion and is spaced from the extendable writer portion. The coefficient of thermal expansion of the contact member is approximately equal to the coefficient of thermal expansion of the extendable writer portion.
    Type: Application
    Filed: June 29, 2012
    Publication date: January 3, 2013
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: Ladislav R. Pust, Lars H. Ahlen, Edwin F. Rejda, David C. Seets, Lance E. Stover, Dian Song, Feng Y. Wang
  • Publication number: 20110058278
    Abstract: This disclosure is directed to air-bearing sliders used in magnetic storage systems that employ a trench arranged between a transducing head connected to a slider body and a leading edge of the slider body. The trench is configured to divert air passing over an air-bearing surface of the slider body away from the transducing head.
    Type: Application
    Filed: September 4, 2009
    Publication date: March 10, 2011
    Applicant: Seagate Technology LLC
    Inventors: Paul J. Sonda, Lars H. Ahlen
  • Publication number: 20080253021
    Abstract: A transducer having an external contact surface includes a writer and a contact member. The writer has a portion extendable beyond the external contact surface. The contact member surrounds at least a portion of the extendable writer portion.
    Type: Application
    Filed: April 12, 2007
    Publication date: October 16, 2008
    Applicant: Seagate Technology LLC
    Inventors: Ladislav R. Pust, Lars H. Ahlen, Edwin F. Rejda, David C. Seets, Lance E. Stover, Dian Song, Feng Y. Wang
  • Patent number: 5991698
    Abstract: A lapping system data acquisition unit is disclosed for use in measuring resistances of multiple resistors embedded in a structure to be machined. Each of multiple independent current sources directs a current through one of the multiple resistors embedded in the structure during machining of a surface of the structure. Each of multiple voltage sensing devices couples to a separate one of the multiple resistors and provides a separate analog voltage output signal indicative of the resistance of the resistor. Each of multiple filters is coupled to a separate one of the multiple voltage sensing devices Analog-to-digital conversion circuitry coupled to the multiple filters generates a digitized signal for each of the filtered output signals.
    Type: Grant
    Filed: May 7, 1997
    Date of Patent: November 23, 1999
    Assignee: Seagate Technology, Inc.
    Inventors: Shanlin Hao, Ray V. Rigles, William P. Wood, Lars H. Ahlen, John C. Heitke