Patents by Inventor Edwin F. Rejda
Edwin F. Rejda 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).
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Patent number: 11763847Abstract: 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: GrantFiled: July 6, 2022Date of Patent: September 19, 2023Assignee: Seagate Technology LLCInventors: David James Ellison, James D. Kiely, Neil Zuckerman, Edwin F. Rejda, Joseph Michael Stephan
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Patent number: 11763846Abstract: Described are magnetic recording heads that include an overcoat that includes a titanium oxynitride (TiON) layer.Type: GrantFiled: September 7, 2021Date of Patent: September 19, 2023Assignee: Seagate Technology LLCInventors: Zhuoyuan Wu, Edwin F. Rejda, Richard T. Greenlee
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Patent number: 11222657Abstract: A recording head has a waveguide that delivers optical energy from an energy source and a write pole extending to a media-facing surface of the recording head. The recording head also has a near-field transducer coupled to receive the optical energy from the waveguide and emit surface plasmons from the media-facing surface towards a recording medium while the write pole applies a magnetic field to the recording medium. The near-field transducer has an extended portion that, as-manufactured, protrudes beyond the media-facing surface by a first distance.Type: GrantFiled: December 30, 2020Date of Patent: January 11, 2022Assignee: Seagate Technology LLCInventors: Michael A. Seigler, Peng Zhang, David James Ellison, James D. Kiely, Edwin F. Rejda
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Publication number: 20210407541Abstract: Described are magnetic recording heads that include an overcoat that includes a titanium oxynitride (TiON) layer.Type: ApplicationFiled: September 7, 2021Publication date: December 30, 2021Inventors: Zhuoyuan Wu, Edwin F. Rejda, Richard T. Greenlee
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Patent number: 11114122Abstract: Described are magnetic recording heads that include an overcoat that includes a titanium oxynitride (TiON) layer.Type: GrantFiled: March 6, 2019Date of Patent: September 7, 2021Assignee: Seagate Technology LLCInventors: Zhuoyuan Wu, Edwin F. Rejda, Richard T. Greenlee
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Patent number: 10424324Abstract: Methods that include forming at least a portion of a near field transducer (NFT) structure; depositing a material onto at least one surface of the portion of the NFT to form a metal containing layer; and subjecting the metal containing layer to conditions that cause diffusion of at least a portion of the material into the at least one surface of the portion of the NFT; and devices formed thereby.Type: GrantFiled: December 11, 2017Date of Patent: September 24, 2019Assignee: Seagate Technology LLCInventors: Yuhang Cheng, Sami Antrazi, Michael Seigler, Scott Franzen, Philip G. Pitcher, Edwin F. Rejda, Kurt W. Wierman
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Publication number: 20180102137Abstract: Methods that include forming at least a portion of a near field transducer (NFT) structure; depositing a material onto at least one surface of the portion of the NFT to form a metal containing layer; and subjecting the metal containing layer to conditions that cause diffusion of at least a portion of the material into the at least one surface of the portion of the NFT; and devices formed thereby.Type: ApplicationFiled: December 11, 2017Publication date: April 12, 2018Inventors: Yuhang Cheng, Sami Antrazi, Michael Seigler, Scott Franzen, Philip G. Pitcher, Edwin F. Rejda, Kurt W. Wierman
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Publication number: 20180090159Abstract: Devices having an air bearing surface (ABS) and including a write pole; a near field transducer (NFT) that includes a peg and a disc, wherein the peg includes a rear peg portion and a peg tip, the rear peg portion and the peg tip are different materials and the peg tip includes: one or more metals; one or more nanoparticles comprising oxides, nitrides, carbides or combinations thereof; one or more conducting oxides, conducting nitrides, conducting bromides, conducting carbides, or combinations thereof; one or more semiconductors; or combinations thereof.Type: ApplicationFiled: November 30, 2017Publication date: March 29, 2018Inventors: Tong Zhao, Yuhang Cheng, Martin Giles Blaber, Jie Gong, Edwin F. Rejda, Michael A. Seigler, Seung-Yeul Yang, Michael Kautzky, Yongjun Zhao, Justin Brons, Andrew J. Boyne, Kurt W. Wierman, Scott Franzen
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Publication number: 20160275972Abstract: Devices having an air bearing surface (ABS) and including a write pole; a near field transducer (NFT) that includes a peg and a disc, wherein the peg includes a rear peg portion and a peg tip, the rear peg portion and the peg tip are different materials and the peg tip includes: one or more metals; one or more nanoparticles comprising oxides, nitrides, carbides or combinations thereof; one or more conducting oxides, conducting nitrides, conducting bromides, conducting carbides, or combinations thereof; one or more semiconductors; or combinations thereof.Type: ApplicationFiled: March 17, 2016Publication date: September 22, 2016Inventors: Tong Zhao, Yuhang Cheng, Martin Giles Blaber, Jie Gong, Edwin F. Rejda, Michael A. Seigler, Seung-Yeul Yang, Michael Kautzky, Yongjun Zhao, Justin Brons, Andrew J. Boyne, Kurt W. Wierman, Scott Franzen
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Patent number: 9087530Abstract: 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: GrantFiled: June 29, 2012Date of Patent: July 21, 2015Assignee: SEAGATE TECHNOLOGY LLCInventors: Ladislav R. Pust, Lars H. Ahlen, Edwin F. Rejda, David C. Seets, Lance E. Stover, Dian Song, Feng Y. Wang
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Patent number: 9025281Abstract: A recording device and a method of forming a recording device are disclosed. The recording device includes an air bearing surface and a near field transducer including a surface proximate the air bearing surface. The device also includes a write pole including a sloped pole piece proximate the near field transducer, where the sloped pole piece includes an end proximate the air bearing surface; a capping material disposed proximate the surface of the near field transducer; and an overcoat layer disposed proximate the capping material and at least a portion of the air bearing surface of the recording device.Type: GrantFiled: August 22, 2013Date of Patent: May 5, 2015Assignee: Seagate Technology LLCInventors: Edwin F. Rejda, Kurt W. Wierman
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Publication number: 20150055441Abstract: A recording device and a method of forming a recording device are disclosed. The recording device includes an air bearing surface and a near field transducer including a surface proximate the air bearing surface. The device also includes a write pole including a sloped pole piece proximate the near field transducer, where the sloped pole piece includes an end proximate the air bearing surface; a capping material disposed proximate the surface of the near field transducer; and an overcoat layer disposed proximate the capping material and at least a portion of the air bearing surface of the recording device.Type: ApplicationFiled: August 22, 2013Publication date: February 26, 2015Applicant: SEAGATE TECHNOLOGY LLCInventors: Edwin F. Rejda, Kurt W. Wierman
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Publication number: 20140113160Abstract: Articles that include a magnetic structure; an intermediate layer, the intermediate layer positioned on the magnetic structure, the intermediate layer having a thickness from about 3 ? to about 50 ?, the intermediate layer including a bottom interface layer, the bottom interface layer positioned adjacent the magnetic structure, the bottom interface layer including atoms of a metal bonded to atoms, compounds, or both of the magnetic structure; an interlayer, the interlayer positioned on the bottom interface layer, the interlayer including oxides of the metal; and a top interface layer, the top interface layer positioned adjacent the interlayer, the top interface layer including atoms of the metal, oxides of the metal, or some combination thereof bonded to atoms or compounds of the adjacent overcoat layer; and an overcoat layer, the overcoat layer positioned on the top interface layer of the intermediate layer.Type: ApplicationFiled: March 13, 2013Publication date: April 24, 2014Applicant: SEAGATE TECHNOLOGY LLCInventors: Philip G. Pitcher, John L. Brand, Edwin F. Rejda, Richard M. Fuller
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Publication number: 20130000107Abstract: 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: ApplicationFiled: June 29, 2012Publication date: January 3, 2013Applicant: SEAGATE TECHNOLOGY LLCInventors: Ladislav R. Pust, Lars H. Ahlen, Edwin F. Rejda, David C. Seets, Lance E. Stover, Dian Song, Feng Y. Wang
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Publication number: 20080253021Abstract: 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: ApplicationFiled: April 12, 2007Publication date: October 16, 2008Applicant: Seagate Technology LLCInventors: Ladislav R. Pust, Lars H. Ahlen, Edwin F. Rejda, David C. Seets, Lance E. Stover, Dian Song, Feng Y. Wang