Patents by Inventor Eric Meloche
Eric Meloche 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: 9171555Abstract: Data storage systems having barriers that may reduce erasure flux and increase write-ability are provided. Data storage systems include a writing element. The writing element has a write pole with a flare region. A magnetic flux barrier is located along the write pole flare region. The magnetic flux barrier is illustratively made from an in-plane magnetically anisotropic material that has an easy plane of magnetization. In another embodiment, a data storage system includes a writing element having an air bearing surface and a shield at the air bearing surface. The shield has a magnetic permeability of approximately zero. The shield illustratively includes alternating layers of positive and negative permeabilities. The shield optionally includes a plurality of shields that may include top, bottom, and side shields.Type: GrantFiled: February 6, 2015Date of Patent: October 27, 2015Assignee: Seagate Technology LLCInventors: Eric Meloche, Bin Lu, Lixin Jia, Jianhua Xue, John David Westwood, Mark Anthony Gubbins, Alexandru Cazacu
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Publication number: 20150154985Abstract: Data storage systems having barriers that may reduce erasure flux and increase write-ability are provided. Data storage systems include a writing element. The writing element has a write pole with a flare region. A magnetic flux barrier is located along the write pole flare region. The magnetic flux barrier is illustratively made from an in-plane magnetically anisotropic material that has an easy plane of magnetization. In another embodiment, a data storage system includes a writing element having an air bearing surface and a shield at the air bearing surface. The shield has a magnetic permeability of approximately zero. The shield illustratively includes alternating layers of positive and negative permeabilities. The shield optionally includes a plurality of shields that may include top, bottom, and side shields.Type: ApplicationFiled: February 6, 2015Publication date: June 4, 2015Inventors: Eric Meloche, Bin Lu, Lixin Jia, Jianhua Xue, John David Westwood, Mark Anthony Gubbins, Alexandru Cazacu
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Patent number: 8982507Abstract: Data storage systems having barriers that may reduce erasure flux and increase write-ability are provided. Data storage systems include a writing element. The writing element has a write pole with a flare region. A magnetic flux barrier is located along the write pole flare region. The magnetic flux barrier is illustratively made from an in-plane magnetically anisotropic material that has an easy plane of magnetization. In another embodiment, a data storage system includes a writing element having an air bearing surface and a shield at the air bearing surface. The shield has a magnetic permeability of approximately zero. The shield illustratively includes alternating layers of positive and negative permeabilities. The shield optionally includes a plurality of shields that may include top, bottom, and side shields.Type: GrantFiled: September 10, 2010Date of Patent: March 17, 2015Assignee: Seagate Technology LLCInventors: Eric Meloche, Bin Lu, Lixin Jia, Jianhua Xue, John David Westwood, Mark Anthony Gubbins, Alexandru Cazacy
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Patent number: 8947807Abstract: A writer assembly having two separately driven write coils allows a combined write field generated by the writer assembly to be fine turned and optimized for a particular application. Two preamplifiers may be incorporated into a printed circuit board in order to separately drive the write coils. In other implementations, there may be more than two write coils and corresponding preamplifiers.Type: GrantFiled: December 20, 2012Date of Patent: February 3, 2015Assignee: Seagate Technology LLCInventors: Kevin Richard Heim, Kirill A. Rivkin, Eric Meloche, John Wolf
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Patent number: 8810964Abstract: A write element including a pole tip shield is disclosed. In embodiments disclosed, for example, the pole tip shield includes side shield portions fabricated of a graded magnetic moment material to form graded side shield portions having a magnetic moment that decreases in the down-track direction along a length of the side shield portions. In another embodiment, the pole tip shield includes side shield portions having a shortened length extending along a partial length of side edges of the pole tip. In illustrated embodiments, the side shield portions are formed of a contoured body having an indented portion forward of the leading edge of the pole tip. The indented portion has a rounded indented surface contour forming a rounded profile for a gap region between a leading edge portion of the pole tip shield forward of the leading edge of the pole tip.Type: GrantFiled: September 15, 2010Date of Patent: August 19, 2014Assignee: Seagate Technology LLCInventors: Kaizhong Gao, Eric Meloche, Jianhua Xue, Eric S. Linville, Dehua Han, Huaqing Yin
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Publication number: 20140177083Abstract: A writer assembly having two separately driven write coils allows a combined write field generated by the writer assembly to be fine turned and optimized for a particular application. Two preamplifiers may be incorporated into a printed circuit board in order to separately drive the write coils. In other implementations, there may be more than two write coils and corresponding preamplifiers.Type: ApplicationFiled: December 20, 2012Publication date: June 26, 2014Applicant: SEAGATE TECHNOLOGY LLCInventors: Kevin Richard Heim, Kirill A. Rivkin, Eric Meloche, John Wolf
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Publication number: 20140063657Abstract: A write element including a pole tip shield is disclosed. In embodiments disclosed, for example, the pole tip shield includes side shield portions fabricated of a graded magnetic moment material to form graded side shield portions having a magnetic moment that decreases in the down-track direction along a length of the side shield portions. In another embodiment, the pole tip shield includes side shield portions having a shortened length extending along a partial length of side edges of the pole tip. In illustrated embodiments, the side shield portions are formed of a contoured body having an indented portion forward of the leading edge of the pole tip. The indented portion has a rounded indented surface contour forming a rounded profile for a gap region between a leading edge portion of the pole tip shield forward of the leading edge of the pole tip.Type: ApplicationFiled: September 15, 2010Publication date: March 6, 2014Applicant: Seagate Technology LLCInventors: Kaizhong Gao, Eric Meloche, Jianhua Xue, Eric S. Linville, Dehua Han, Huaqing Yin
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Publication number: 20120063032Abstract: Data storage systems having barriers that may reduce erasure flux and increase write-ability are provided. Data storage systems include a writing element. The writing element has a write pole with a flare region. A magnetic flux barrier is located along the write pole flare region. The magnetic flux barrier is illustratively made from an in-plane magnetically anisotropic material that has an easy plane of magnetization. In another embodiment, a data storage system includes a writing element having an air bearing surface and a shield at the air bearing surface. The shield has a magnetic permeability of approximately zero. The shield illustratively includes alternating layers of positive and negative permeabilities. The shield optionally includes a plurality of shields that may include top, bottom, and side shields.Type: ApplicationFiled: September 10, 2010Publication date: March 15, 2012Inventors: Eric Meloche, Bin Lu, Lixin Jia, Jianhua Xue, John David Westwood, Mark Anthony Gubbins, Alexandru Cazacu