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| Number | Title | Issue Date |
| 7573675 | Thin film magnetic head A thin film magnetic head has an air bearing surface and comprises magnetic shield layers, an MR element, bias-applying layers, and a hard magnetic layer. Each of the magnetic shield layers has an end face forming the air bearing surface, and an end face located opp... | 08/11/2009 |
| 7370403 | Method of fabricating a planar spiral inductor structure having an enhanced Q value Within a method for fabricating an inductor structure there is first provided a substrate. There is then formed over the substrate a planar spiral conductor layer to form a planar spiral inductor, wherein a successive series of spirals within the planar spiral condu... | 05/13/2008 |
| 7372664 | Techniques to reduce adjacent track erasure including a write pole with a tip having faces at angles Techniques for reducing adjacent track erasure include: a bucking coil having a lower number of turns than the write coil for bucking out a portion of the field induced by the write coil; a hybrid solenoid coil that includes turns that are in a pancake arrangement a... | 05/13/2008 |
| 7362542 | Slider with underpass lead configured as a cooling plate A slider is disclosed having a continuous coil including front coils, back coils, and a center tab, a write head including upper and lower poles which sandwich at least a portion of the front coils of the continuous coil, and at least one underpass lead, which passe... | 04/22/2008 |
| 7362543 | Magnetoresistive/inductive write head assembly formed with seed layers having a uniform thickness The present invention presents a method for fabricating coil elements for magnetic write heads. A coil pattern is formed on a substrate using photolithographic techniques. The substrate is etched using reactive ion etching, creating a coil-shaped trench in the subst... | 04/22/2008 |
| 7348671 | Vias having varying diameters and fills for use with a semiconductor device and methods of forming semiconductor device structures including same A method for forming electrical interconnects having different diameters and filler materials through a semiconductor wafer comprises forming first and second openings through a semiconductor, wherein the first opening has a narrower width (smaller diameter) than th... | 03/25/2008 |
| 7346978 | Process of making a thin film magnetic head A method for manufacturing a thin film magnetic head comprises forming a first magnetic core extending from a surface facing a recording medium in a height direction. The method further comprises forming first coil pieces from a first conductive material on the coil... | 03/25/2008 |
| 7336450 | Magnetic head with optimum aspect ratio of upper shield layer A magnetic head contains a write magnetic head and a read magnetic head. The write magnetic head includes a lower core layer, an upper core layer arranged over the lower core layer, and a coil layer for applying a magnetic field to the lower and upper core layers. T... | 02/26/2008 |
| 7324304 | Tapered write pole for reduced skew effect A write pole for a read/write head of a disk drive system has a tapered surface on a leading edge thereof. Preferably, the tapered surface has a taper angle of between 0 and 20 degrees from a plane normal to the ABS. By having a write pole with a taper in this manne... | 01/29/2008 |
| 7320168 | Method to improve heat dissipation in a magnetic shield Problems such as thermal pole tip protrusion result from thermal mismatch between the alumina and pole material during the writing process. This, and similar problems due to inadequate heat dissipation, have been overcome by dividing the bottom shield into two piece... | 01/22/2008 |
| 7319572 | Thin film coil and method of forming the same, and thin film magnetic head and method of manufacturing the same Provided are a thin film coil formed at high densities, a method of forming a thin film coil, a thin film magnetic head which includes the thin film coil and thus enables ensuring stable recording characteristics while coping with a higher recording density, and a m... | 01/15/2008 |
| 7313858 | Method for manufacturing a magnetic head coil structure and/or pole tip structure A Damascene process is provided for manufacturing a coil structure for a magnetic head. During the manufacturing process, an insulating layer is initially deposited after which a photoresist layer is deposited. A silicon dielectric layer is then deposited on the pho... | 01/01/2008 |
| 7310204 | Inductive writer design for using a soft magnetic pedestal having a high magnetic saturation layer A magnetic head for writing information on a relatively-moving medium has a pair of substantially flat soft magnetic pole layers separated by a pair of coil layers. A soft magnetic pedestal adjoins the leading pole layer adjacent to a medium-facing surface and is sp... | 12/18/2007 |
| 7310202 | Magnetic recording head with clad coil A magnetic write head for recording data having reduced erasure caused by a magnetic field is disclosed. The magnetic write head include a main pole and a conductive coil positioned adjacent the main pole. The conductive coil is insulated from the main pole. The mag... | 12/18/2007 |
| 7304821 | Magnetic head coil structure and method for manufacturing the same A Damascene process is provided for manufacturing a coil structure for a magnetic head. During the manufacturing process, an insulating layer is initially deposited after which a photoresist layer is deposited. A silicon dielectric layer is then deposited on the pho... | 12/04/2007 |
| 7304557 | Laminated coil A laminated coil includes a non-magnetic body section (5) inside a laminated body. On the non-magnetic body section (5), a coil conductor (4c) is provided. The coil number of the coil conductor (4c) is greater than the coil ... | 12/04/2007 |
| 7296339 | Method for manufacturing a perpendicular magnetic recording head A method and system for manufacturing a perpendicular magnetic recording head is disclosed. The method and system include providing a chemical mechanical planarization (CMP) uniformity structure having an aperture therein and forming a perpendicular magnetic recordi... | 11/20/2007 |
| 7292408 | Bilayer coil insulation for magnetic write heads to minimize pole recession A magnetic write head for use in a data recording system having first and second magnetic pole, the first pole having a P1 pedestal. An electrically conductive coil passes through a space between the first and second poles for inducing a magnetic flux through the yo... | 11/06/2007 |
| 7292409 | Magnetic head with thin trailing pedestal layer A magnetic head for a disk drive is disclosed that has a first soft magnetic pole layer disposed in the head adjacent to a medium-facing surface and extending perpendicular to the medium-facing surface; a second soft magnetic pole layer disposed closer than the firs... | 11/06/2007 |
| 7287314 | One step copper damascene CMP process and slurry A Chemical Mechanical Polish (CMP) process and slurry therefore slurry that is capable of removing NiFe, SiO2, Photoresist, Ta, alumina and Cu at substantially the same rate. The slurry is useful for obtaining a substantially planar surface of several materials whil... | 10/30/2007 |
| 7286321 | Thin film magnetic head having toroidal coil and manufacturing method of the same Within a space surrounded by a lower core layer, an upheaval layer, and a back gap layer, there are a plurality of first coil pieces arranged in a height direction and covered with a coil insulating layer. On the coil insulating layer, the upheaval layer, and a laye... | 10/23/2007 |
| 7286091 | Co-located antennas Techniques for implementing antenna configurations with substantially co-located axes are disclosed. A method for constructing co-located antennas includes winding a first antenna on a support, the first antenna having a first magnetic dipole in a first orientation;... | 10/23/2007 |
| 7283327 | Magnetic write head having resistive heater coil A magnetic write head includes a magnetic yoke having a first pole and a second pole. The first pole and the second pole each terminate at an air bearing surface. The first pole is magnetically coupled to the second pole in a backgap region. The magnetic write head ... | 10/16/2007 |
| 7280298 | Thin film magnetic head fit to recordation of higher frequency A set of coils wind around a magnetic core in a thin film magnetic head. Current supplying circuits are separately connected to the individual coils. The individual coils get shorter in the overall length as compared with the case where a set of coils consist of a s... | 10/09/2007 |
| 7280313 | High aspect ratio co-planar structure fabrication consisting of different materials A a method for fabricating a structure, such as a magnetic head, having two coplanar metallic features of different compositions, both deposited on their own seed layers. The features may be made tall relative to their widths (ie. have a high aspect ratio), and are ... | 10/09/2007 |
| 7272883 | Methods of forming an electrical connection in a magnetic head using a damascene process In one illustrative example disclosed, a method for use in making a magnetic head involves forming a thermal-assist heater for the magnetic head; forming a plurality of coil layers of a write coil using a damascene process; and simultaneously forming an electrical c... | 09/25/2007 |
| 7268973 | Perpendicular magnetic head having thermally assisted recording element A perpendicular magnetic head including a media heating element that is fabricated within the magnetic head structure. The heating element is preferably fabricated above the first magnetic pole layer close to the ABS surface of the head. In one embodiment, following... | 09/11/2007 |
| 7268975 | High data rate writer with low resistance coil and short yoke One of the major requirements for higher frequency extendability is to reduce yoke length and inductance in order to have fast saturation. This has been accomplished by using a design that provides a cavity in the lower pole piece inside which is located at least tw... | 09/11/2007 |
| 7249407 | Method of manufacturing magnetic head A method of manufacturing a magnetic head is provided which can improve controlling a thickness of a gap layer. A coil base layer having at least a surface layer formed of one or two or more alloys selected from Au, Ru, and Rh is formed on a contact layer. Thereby, ... | 07/31/2007 |
| 7248432 | Inductive writer design for using a soft magnetic pedestal having a high magnetic saturation layer A magnetic head for writing information on a relatively-moving medium has a pair of substantially flat soft magnetic pole layers separated by a pair of coil layers. A soft magnetic pedestal adjoins the leading pole layer adjacent to a medium-facing surface and is sp... | 07/24/2007 |
| 7248437 | Perpendicular magnetic recording head and method for manufacturing the same In a non-magnetic material layer, a concave portion is formed above a groove G. In addition, an auxiliary magnetic pole layer is formed having a convex portion which extends in the direction toward a main magnetic pole layer and which is placed in the concave portio... | 07/24/2007 |
| 7239479 | Thin film magnetic head and manufacturing method thereof In a write element of a thin film magnetic head, a second pole portion has a reduced width in the medium-facing surface side. A first pole portion includes a trimmed portion in such a position that the trimmed portion faces the second pole portion in the medium-faci... | 07/03/2007 |
| 7228619 | Method of manufacturing a magnetic head with common seed layer for coil and pedestal A method for fabricating a coil and pedestal for a write head using a common seed layer is described. A nonmetallic gap layer is deposited on a planarized pole piece surface. Openings for the pole piece pedestal and the back gap pole piece are etched through the non... | 06/12/2007 |
| 7229746 | Printed high strength permanent magnet targets for magnetic sensors A process for forming magnetic target tracks for position and speed sensors. The tracks are formed from a paste comprising a magnetic powder material and a hardenable carrier. The tracks can be formed within trenches in a substrate or on the substrate surface. ... | 06/12/2007 |
| 7229908 | System and method for manufacturing an out of plane integrated circuit inductor A system and method is described for manufacturing an out of plane integrated circuit inductor. A plurality of parallel metal bars are formed on a substrate and covered with a first passivation layer. A ferromagnetic core is then deposited over the first passivation... | 06/12/2007 |
| 7221250 | Coil component and method of manufacturing the same The invention relates to a coil component used as a major component of a common mode choke coil or transformer and a method of manufacturing the same, and the invention is aimed at providing a compact and low-profile coil component having a high common mode filterin... | 05/22/2007 |
| 7215511 | Magnetic write head with gap termination less than half distance between pedestal and back gap A magnetic write head having a metal, non-magnetic write gap that extends only partially to the magnetic back gap, the remainder of the distance between the pole tip and the back gap being a magnetic material. The elimination of the seed layer reduces the amount of ... | 05/08/2007 |
| 7212382 | Magnetic head including metallic material layer between write head section and read head section A magnetic head includes a metallic material layer between a lower core layer and an upper shield layer. This metallic material layer extends to the rear of the magnetic head in the height direction to overlap with a first metal layer. The metallic material layer ca... | 05/01/2007 |
| 7210217 | Method of manufacturing thin film magnetic head A wire gap film is formed on a flat coplanar surface formed on a bottom pole by a bottom track pole and a thin film coil, first and second magnetic material films constituting a top pole are formed on a flat surface of the thin film coil, and the first and second ma... | 05/01/2007 |
| 7212378 | Thin film magnetic head having toroidal coil A thin-film magnetic has a coil toroidally wound around a magnetic layer. The coil includes a plurality of first coil segments that cross over the magnetic layer; a coil insulating layer covering the first coil segments, the magnetic layer being formed on the coil i... | 05/01/2007 |
