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| Number | Title | Issue Date |
| 8035921 | Perpendicular magnetic recording head and method for manufacturing the same A perpendicular magnetic recording head includes a main pole, a return yoke forming a magnetic path with the main pole, and a coil encompassing the main pole in a solenoid structure to allow the main pole to generate a magnetic field that records information on a re... | 10/11/2011 |
| 7657992 | Method for making a perpendicular magnetic recording write head with a self aligned stitched write shield A method of making a perpendicular magnetic recording (PMR) head with single or double coil layers and with a small write shield stitched onto a main write shield. The stitched shield allows the main write pole to produce a vertical write field with sharp vertical g... | 02/09/2010 |
| 7549216 | Method of manufacturing a thin film magnetic head The invention is directed to a method for manufacturing a thin film magnetic head comprising forming a first coil, a first pole piece and a first back gap piece on a first insulating film formed on a surface of a first magnetic film, so that the first coil, the firs... | 06/23/2009 |
| 7526857 | Method of manufacturing thin-film magnetic head A method of manufacturing a thin-film magnetic head including the step of forming a thin-film coil. The step of forming the thin-film coil forms: a flat first coil of a single turn; a flat second coil of two turns arranged to sandwich the first coil from inner and o... | 05/05/2009 |
| 7428776 | Method of manufacturing a magnetic head A method of manufacturing a thin-film coil in which a first coil and a second coil each having a desired number of winding are electrically connected in series and the second coil is formed between winding portions of the first coil on substantially the same plane, ... | 09/30/2008 |
| 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 |
| 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 |
| 7360303 | Method manufacturing for a winding assembly of a rotating electrical machine There are proposed a manufacturing method of a winding assembly of a rotating electrical machine using a rotation block and a fixed block and a manufacturing apparatus used for the same. The rotation block includes a rotation surface rotatable around a rotation axis... | 04/22/2008 |
| 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 |
| 7322097 | Method of manufacturing a magnetic head having short pole yoke length The induction coil of the magnetic head of the present invention is fabricated in a patterned electrical insulation material, preferably utilizing reactive ion etch (RIE) techniques. The electrical insulation material is particularly patterned such that it is formed... | 01/29/2008 |
| 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 |
| 7300595 | Method for filling concave portions of concavo-convex pattern and method for manufacturing magnetic recording medium A method for filling concave portions of a concavo-convex pattern by which the concave portions of the concavo-convex pattern can be filled to flatten the surface with reliability, and a method for manufacturing a magnetic recording medium by which a magnetic record... | 11/27/2007 |
| 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 |
| 7275306 | Damascene method for forming write coils of magnetic heads An improved damascene method of forming a write coil of a magnetic head. The method includes the steps of forming a hard mask layer over an insulator layer; forming a photoresist layer over the hard mask layer; performing an image patterning process to produce a wri... | 10/02/2007 |
| 7243411 | Method for protecting write head coil during write pole/shaping A method for protecting a write head coil during write pole notching using ion mill resistant mask formed by reactive ion etching is disclosed. Ion mill shaping of the write pole is performed after depositing an ion mill-resistant material to protect the coil. ... | 07/17/2007 |
| 7194798 | Method for use in making a write coil of magnetic head Methods suitable for use in making a write coil of a magnetic head includes the steps of forming a seed layer made of ruthenium (Ru) over a substrate; forming, over the seed layer, a patterned resist having a plurality of write coil trenches patterned therein; elect... | 03/27/2007 |
| 7168156 | Method of manufacturing a thin-film magnetic head A thin-film magnetic head comprises first and second magnetic pole groups, magnetically connected to each other, having respective magnetic pole parts opposing each other on a side of a medium-opposing surface; a recording gap layer formed between the magnetic pole ... | 01/30/2007 |
| 7160770 | Method of manufacturing an electronic component including an inter-line insulating layer and a conductor pattern A small size electronic component has a small direct current resistance value of a conductor pattern and minimal dimensional irregularity of a conductor pattern. In order to form such a component, a photosensitive conductive paste applied on a ceramic substrate and ... | 01/09/2007 |
| 7146714 | Manufacturing a magneto-optical write/read head A method of manufacturing a digital magneto-optical signal write/read head including a thin-film in-plane magnetic coil disposed on an outwardly directed surface of a coil substrate. Coil lead in and coil lead out sections of the coil are extended to an interconnect... | 12/12/2006 |
| 7117583 | Method and apparatus using a pre-patterned seed layer for providing an aligned coil for an inductive head structure A method and apparatus using a pre-patterned seed layer for providing an aligned coil for an inductive head structure. The method uses an aligned process where the base plate imprint is fabricated on an electrically insulating layer and the reversed image is fabrica... | 10/10/2006 |
| 7111384 | Method for manufacturing magnetic head including coil A method for manufacturing a magnetic recording head includes the steps of forming a first lifting layer and a second lifting layer on a bottom core layer, forming an inorganic insulating layer in a gap between the first lifting layer and the second lifting layer, f... | 09/26/2006 |
| 7111387 | Method of manufacturing a thin film magnetic head comprising an insulating layer provided between a core and coil A method of manufacturing a thin film magnetic head comprising an insulating layer provided between a core and a coil is provided. Also provided is a method for forming an inorganic insulation underlying layer and an organic insulation underlying layer on a lower co... | 09/26/2006 |
| 7107666 | Method of manufacturing an ultra-miniature magnetic device An ultra-miniature magnetic device generally comprises a conductive winding and a magnetic core. The conductive winding includes an upper conductor and a lower conductor. The magnetic core is of an elongate rectangular or oval shape having two elongate sections and ... | 09/19/2006 |
| 7089651 | Process of manufacturing coil layers using a novel combination of photoexposure and thermal curing to achieve shape control of a photoresist material A method for forming at least two layers of electrical coils and their supportive resistive layers for a magnetic write head having an ultra-short yoke so that the second and any additional coil layers are formed on flat resistive surfaces to eliminate problems asso... | 08/15/2006 |
| 7079355 | Magnetic transducer with a write head having a multi-layer coil A method for producing a magnetic transducer with an inductive write head having a multilayer coil with a high aspect ratio and a short yoke is disclosed. A damascene process is used for two coil layers and a conventional process for the third coil layer. The proces... | 07/18/2006 |
| 6980396 | Coil for thin-film magnetic head with inductive write head element A thin-film magnetic head includes an insulation gap, first and second yoke layers with first and second ends, respectively, the first ends constituting magnetic poles separated from each other by the insulation gap, the second ends being magnetically coupled with e... | 12/27/2005 |
| 6977796 | Wiring pattern and method of manufacturing the same and thin film magnetic head and method of manufacturing the same A bottom track pole is formed on a surface of a bottom pole, a thin film coil is formed on the bottom pole to form a flat coplanar surface with the bottom track pole, a write gap film is formed on the flat coplanar surface, first and second magnetic material films c... | 12/20/2005 |
| 6947255 | Magnetic head having a notched pole piece structure and method of making the same A magnetic head having an improved fringing field and overwrite capability, and a method of making the same, are described. The method includes the acts of frame plating a pedestal over a first pole piece; depositing an insulator over the first pole piece and plated... | 09/20/2005 |
| 6868600 | Method of manufacturing a thin film magnetic head A method of manufacturing a thin film magnetic head having superior overwrite characteristics as well as an extremely small pole width is disclosed. The thin film magnetic head has a thin film coil provided in a recess region of a bottom pole. This makes it possible... | 03/22/2005 |
| 6804879 | Method of fabricating a magnetic transducer with a write head having a multi-layer coil A method for producing a magnetic transducer with a inductive write head having a multilayer coil with a high aspect ratio and a short yoke is provided. A damascene process is used for two coil layers and a conventional process for the third coil layer. The process ... | 10/19/2004 |
| 6785955 | Method for providing pedestal-defined zero throat writer A method and system for providing a writer is disclosed. The method and system include providing a first pole, an insulator covering a portion of the first pole and a coil on the first insulator. The coil includes a plurality of turns. The method and system also inc... | 09/07/2004 |
| 6729012 | Method of manufacturing a thin-film magnetic head A method of manufacturing a thin-film magnetic head comprises the steps of forming a bottom pole layer, forming a gap layer, forming a top pole layer, and forming a thin-film coil. The thin-film coil is wound around the top pole layer in a helical manner. In the ste... | 05/04/2004 |
| 6631550 | Method of manufacturing a thin-film magnetic head A method of manufacturing a thin-film magnetic head includes the steps of: forming a first shield layer and a first portion of a second shield layer to be placed in one plane and insulated from each other; forming at least part of a thin-film coil on the ... | 10/14/2003 |
| 6603641 | Thin film magnetic head and method of manufacturing the same A bottom pole is divided into a bottom pole tip and a bottom pole layer, and the bottom pole tip is formed on the flat surface of the bottom pole layer. An insulating layer is formed in a concave region adjacent to the bottom pole tip, and the throat heig... | 08/05/2003 |
| 6496330 | Magnetic write head having a splitcoil structure A magnetoresistive head having a split coil structure including multiple, similar coil layers separated by an insulator and joined at their ends to define parallel electrical paths. The coil passes through a magnetic yoke having an open end and a closed e... | 12/17/2002 |
| 6226860 | Method of forming an inductive writer having a high conductor/insulator ratio A method of fabricating a coil structure for use in a writer portion of a recording head is disclosed. The method comprises fabricating a bottom pole. A bottom insulating layer is fabricated on the bottom pole, while a seed layer is fabricated on the bott... | 05/08/2001 |
| 6195872 | Method of manufacturing a thin film magnetic head A method of manufacturing a thin film magnetic head including a first magnetic layer, a second magnetic layer, a gap layer, and a thin film coil consisting of one or more thin film coil layers. According to the method, the step of forming a first thin fil... | 03/06/2001 |
| 5933940 | Method of manufacturing a recording/reading matrix magnetic head A matrix type magnetic recording/reading head made in integrated fashion, including an electrically non-conductive ceramic substrate having a first main face and a second main face, each provided with connection areas. The two areas of the two faces are i... | 08/10/1999 |
| 5875080 | Write head with second coil above pole having coil density less electrically connected first coil below the pole A low inductance magnetic write head is provided with first and second pole piece layers that have first ends separated by a write gap layer and second ends connected together at a back gap. An insulation stack is provided which is sandwiched between the ... | 02/23/1999 |
