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Albert Deirchow Lin, Patrick John Graydon, Justin Eliot Busch, Maureen Caudill, Nancy Ann Chinchor, Jason Chun Ming Tseng, Lei Wang, Bryner Sabido Pancho, Kenneth Scott Klein, Yuri Adrian Tijerino: Concept-based search and retrieval system. Banner & Witcoff, January 6, 2004: US06675159 (701 worldwide citation)

A concept-based indexing and search system indexes collections of documents with ontology-based predicate structures through automated and/or human-assisted methods. The system extracts the concepts behind user queries to return only those documents that match those concepts. The concept based searc ...


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Lei Wang: Method and system for providing an energy assisted magnetic recording head in a wafer packaging configuration. Western Digital, March 13, 2012: US08134794 (155 worldwide citation)

A method and system for providing energy assisted magnetic recording (EAMR) heads are described. The heads include sliders having leading and trailing edges. An EAMR transducer for each head is fabricated on a front face of a substrate that corresponds to the trailing edge of the slider. An overcoat ...


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Lei Wang, Shing Lee: Method and system for mounting lasers on energy assisted magnetic recording heads. Western Digital, September 6, 2011: US08012804 (152 worldwide citation)

A method and system for providing energy assisted magnetic recording (EAMR) heads including EAMR transducers are described. The method and system include aligning a laser bar to the EAMR heads on a substrate. The laser bar includes lasers in locations corresponding to a portion of the EAMR transduce ...


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Lei Wang, Jih Chiou Hser: Systems and methods for mounting and aligning a laser in an electrically assisted magnetic recording assembly. Western Digital, June 4, 2013: US08456961 (148 worldwide citation)

Systems and methods for mounting and aligning a laser in an electrically assisted magnetic recording (EAMR) assembly are described. In one embodiment, the invention relates to a submount assembly for a laser diode of an EAMR head, the submount assembly including a submount including a block shape in ...


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Yingjian Chen, Hua Ching Tong, Lei Wang, Xizeng Shi: High speed, high areal density inductive writer. Read Rite Corporation, September 9, 2003: US06618223 (147 worldwide citation)

An inductive write element is disclosed for use in a magnetic data recording system. The write element provides increased data rate and data density capabilities through improved magnetic flux flow through the element. The write element includes a magnetic yoke constructed of first and second magnet ...


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Benjamin Chen, Hongping Yuan, Danning Yang, Wei Zhang, Hugh C Hiner, Lei Wang, Yingjian Chen, Brant Nease: Method and system for providing a smaller critical dimension magnetic element utilizing a single layer mask. Western Digital, Jonathan E Prejean Esq, Strategic Patent Group, September 2, 2008: US07419891 (146 worldwide citation)

The method and system for providing a magnetic element are disclosed. The method and system include providing a magnetic element stack that includes a plurality of layers and depositing a stop layer on the magnetic element stack. The method and system also include providing a dielectric antireflecti ...


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Lei Wang, Shing Lee, Sergei Sochava, Hyojune Lee, Arkadi B Goulakov: Method and system for optically coupling a laser with a transducer in an energy assisted magnetic recording disk drive. Western Digital, November 26, 2013: US08593914 (145 worldwide citation)

A method and system for providing an energy assisted magnetic recording (EAMR) head are described. The EAMR head includes a laser, a slider, and an EAMR transducer. The laser has a main emitter and at least one alignment emitter. The slider includes at least one alignment waveguide, at least one out ...


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Zhong Shi, Arkadi B Goulakov, Alexandre V Demtchouk, Lei Wang, Michael V Morelli: Method and system for improving laser alignment and optical transmission efficiency of an energy assisted magnetic recording head. Western Digital, March 25, 2014: US08681594 (144 worldwide citation)

An EAMR disk drive includes a media, a laser, and a slider coupled with the laser. The laser for provides energy. The slider has an air-bearing surface, a laser input side, an EAMR transducer and an antireflective coating (ARC) layer occupying a portion of the laser input side. The ARC layer is conf ...


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Alexandre Anguelouch, Lei Wang, Chester Xiaowen Chien: Metrology and 3D reconstruction of devices in a wafer. Western Digital, January 17, 2012: US08097846 (143 worldwide citation)

A method for measuring three-dimensional devices in a wafer comprises the step of obtaining a plurality of cross-sectional images of a corresponding plurality of three-dimensional devices in the wafer. The plurality of three-dimensional devices have essentially identical geometries. Each cross-secti ...