Did You Know...
...that Robert Adler has the dubious distinction of being the Father of the Couch Potato? Back in 1955 Adler was employed by what was then Zenith Radio Corp., where he was charged to invent something that would allow viewers to turn down the TV volume without leaving their chairs. After a series of flops (such as a wired contraption that people tripped over), Adler hit on the idea of using sound waves. Thus the Remote Control was born...
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| Number | Title | Issue Date |
| 7312951 | Magnetic head for perpendicular magnetic recording The invention provides a magnetic head for perpendicular magnetic recording having an air bearing surface positioned facing the recording surface of a recording medium, which records magnetic information on the recording medium by generating magnetic flux toward the... | 12/25/2007 |
| 7288333 | Magnetic film and thin film magnetic head using this magnetic film A soft magnetic film of the present invention is a plated film composed of Co and Fe, and columnar crystals extending in the film thickness direction are provided. In the present invention, columnar crystals extending in the film thickness direction are provided so ... | 10/30/2007 |
| 7249406 | Method to detect magnetic pole defects in perpendicular recording heads at wafer level The perpendicular magnetic head fabrication and testing method includes the additional fabrication of magnetic pole testing structures in the kerf area of the wafer substrate. Particularly, magnetic interconnect pieces are fabricated in the kerf area to magnetically... | 07/31/2007 |
| 7206167 | Servo write method for magnetic tape A batch fabrication technique is described that increases the manufacturing efficiency of servo write heads and also improves servo pattern definition for fine features, while reducing tape and head wear. Multiple heads are fabricated as a batch from one or more fer... | 04/17/2007 |
| 7100266 | Method of forming a beveled writing pole of a perpendicular writing element A beveled writing pole includes a top portion, a beveled portion, and a throat portion. The top portion has an end that defines a writing pole tip. The beveled portion adjoins the top portion and has a bevel that extends from the writing pole tip and increases a thi... | 09/05/2006 |
| 6952866 | Method of manufacturing the thin film magnetic head Method of manufacturing a thin film magnetic head which can exhibit a high-performance head characteristic without complicating the manufacturing procedure. A coil connection is integrated into one body and constituted part of the thin film coil. A connection middle... | 10/11/2005 |
| 6915559 | Method of manufacturing a read head A method of manufacturing an active element for use with a magnetic head includes depositing a magnetic material to form a magnetic member, and nitriding the magnetic member after the depositing step. Preferably, the depositing step comprises depositing nickel-iron ... | 07/12/2005 |
| 6912769 | Method a fabricating a magnetic head A magnetic head is configured by forming a thin-film-shaped magnetic element on top of a thin film that is provided parallel to a medium-facing surface. An aperture is formed in the thin film, and part of a main magnetic pole is formed to have a tip portion that pro... | 07/05/2005 |
| 6894869 | Low inductance, ferrite sub-gap substrate structure for surface film magnetic recording heads A thin film magnetic recording head is fabricated by forming a substrate from opposing ferrite blocks which have a ceramic member bonded between them. This structure is then diced to form a plurality of columns, wherein each column has a ferrite/ceramic combination.... | 05/17/2005 |
| 6813824 | Method of producing thin film magnetic head A liquid resist is introduced between adjacent conductive lines of a coil pattern girdling around a magnetic core piece. When the liquid resist is cured, an insulating resin filler can be fixed between the adjacent conductive lines of the coil pattern. An insulating... | 11/09/2004 |
| 6801379 | Multi-magnetic recording head, and magnetic recording method and magnetic recording apparatus using the same The present invention provides a multi-magnetic recording head capable of increasing a magnetic recording density of information recorded on a magnetic recording medium. The multi-magnetic recording head includes a substrate, a pair of first thin film magnetic poles... | 10/05/2004 |
| 6636390 | Magnetic head and magnetic recording and reproducing system A magnetic head for vertical magnetic. The magnetic head includes: a recording head including a first main pole and a first return yoke, the first main pole having a first medium facing portion, the first return yoke having a second medium facing portion,... | 10/21/2003 |
| 6588092 | Method for producing a magnetic head, the magnetic head including a pair of magnetic core halves Method for producing a magnetic head of a pair of magnetic core halves combined with a nonmagnetic layer therebetween including forming a winding window in at least one of a pair of generally flat oxide magnetic plates, forming at least one underlying lay... | 07/08/2003 |
| 6496328 | Low inductance, ferrite sub-gap substrate structure for surface film magnetic recording heads A thin film magnetic recording head is fabricated by forming a substrate from opposing ferrite blocks which have a ceramic member bonded between them. This structure is then diced to form a plurality of columns, wherein each column has a ferrite/ceramic c... | 12/17/2002 |
| 6436560 | Magnetic head and magnetic disk device using the same A magnetic head comprises: an induction type head for recording including a lower magnetic core, a writing gap film formed on the lower magnetic core, an upper magnetic core having a track portion and a portion spreading from the track portion, a pluralit... | 08/20/2002 |
| 6433958 | Magnetic head, method for producing the same, video recording and reproduction apparatus including the magnetic head, and video camera including the magnetic head A magnetic head includes a pair of magnetic core halves; and a nonmagnetic layer provided between the pair of magnetic core halves for combining the pair of magnetic core halves. The pair of magnetic core halves each includes an oxide magnetic base, at le... | 08/13/2002 |
| 6258468 | AMR read sensor structure and method with high magnetoresistive coefficient A magnetic read element for use in magnetic data retrieval includes a NiFeCr seed layer and an electrically insulating spacer layer between an MR stripe and a soft adjacent layer formed of, for example, NiFeRh. The magnetic read element includes a magneto... | 07/10/2001 |
| 6226148 | Magnetic head In a magnetic head, a second leg portion 10b with which a coil is not coupled is connected to a first long side 82 1 (outer-body 8). Since the sectional area (thickness) is made larger in comparison to the conventional technique, thereby the ma... | 05/01/2001 |
| 6222701 | Magnetic head with (411) plane single crystal ferrite medium facing surface and (122) plane gap surface A magnetic head having excellent abrasion characteristics and a high playback output. The magnetic head is made up of a pair of magnetic core halves each having a single crystal ferrite at a portion thereof, said magnetic core halves being abutted and joi... | 04/24/2001 |
| 6073338 | Thin film read head with coplanar pole tips A method of manufacturing a thin film magnetic head which employs pole tips members which are coplanar in a plane across the write gap to produce a written track whose width is determined by the thickness of the pole tip members. The coplanar write struct... | 06/13/2000 |
| 6016243 | Magnetic head having recording medium facing surfaces with tilted crystal orientation of single crystal ferrite A magnetic head is provided which realizes long service life and high reliability by improved abrasion resistance without deteriorating output characteristics of the magnetic head during recording/reproduction. In a magnetic head having a pair of magnetic... | 01/18/2000 |
| 5910863 | Magnetic head slider and magnetic disk device using the same A magnetic disk recording device having a continuous medium type magnetic disk and a magnetic head slider, wherein the magnetic head slider is formed of a sintered body essentially consisting of titanium oxide as the major component thereof and at least o... | 06/08/1999 |
| 5875081 | Magnetic head A magnetic head having a pair of magnetic core halves integrally bonded to each other, each magnetic core half being formed by a single-crystal ferrite piece and a polycrystal ferrite piece bonded together to constitute a junction ferrite, with a magnetic... | 02/23/1999 |
| 5856899 | Magnetic head The magnetocrystalline anisotropic energy Kl is set to not more than 100 J/m3 and the absolute value of the magnetostriction in the direction, as the magnetic circuit direction, is reduced by appropriately selecting the ferrite material c... | 01/05/1999 |
| 5806172 | Method for manufacturing a magnetic head In relation to the magnetic head using a polycrystalline Mn-Zn ferrite as a core material, a magnetic head manufacturing method is provided for preventing the generation of the post-recording noise which is a pulse noise generated immediately after the co... | 09/15/1998 |
| 5799389 | Method for producing magnetic head A head chip of a magnetic head is produced by a method in which magnetic core half blocks, each having plural track width delimiting grooves on its major surface and having a magnetic metal film of a soft magnetic metal material formed on the major surfac... | 09/01/1998 |
| 5761789 | Method of producing a magnetic head A method of making a magnetic head comprising: a first step of butting projection end faces of a pair of magnetic cores each of which is previously machined into a convex shape, through a magnetic gap member; a second step of forming notches which reach a... | 06/09/1998 |
| 5764455 | Magnetic head This invention provides a magnetic head suitably used for replay because of its giving a high output with a low noise. A magnetic head suitable for replay is provided which is made of a pair of magnetic cores 1 and 2 facing each other with a magnetic gap ... | 06/09/1998 |
| 5576912 | Floating magnetic head with reduced magnetostriction vibration noise In a floating magnetic head, noises produced at the time of reproduction are reduced, thereby enhancing the precision of detection of a track position. The floating magnetic head uses a monocrystal magnetic material constituting an electromagnetic transdu... | 11/19/1996 |
| 5576098 | Thin film magnetic head A thin film magnetic head includes an upper magnetic core film and a lower magnetic core film laminated one on another through a magnetic gap layer. The upper and lower magnetic core films are multilayer thin films, respectively, each of which is composed... | 11/19/1996 |
| 5515222 | Magnetic head core arrangement having medium facing surface sides formed of single-crystal ferrite In a magnetic head having a pair of magnetic cores defining a magnetic gap in-between, a side of each magnetic core facing a recording medium is formed of a single-crystal ferrite, with the remaining portions of each magnetic core being formed of poly-cry... | 05/07/1996 |
| 5486969 | Magnetic head core having ferrite member reinforced by non-magnetic material A magnetic head core for a magnetic head including a first and a second ferrite member butted and bonded together to form an annular, closed magnetic path around a coil-winding groove, and a coil attached to a coil-winding portion of the first ferrite mem... | 01/23/1996 |
| 5412526 | Surge arrester circuit and housing therefor The present invention provides a circuit for limiting voltage surges in load centers, panelboards and other electrical distribution devices. The circuit includes at least one high potential terminal adapted for connecting to at least one corresponding ser... | 05/02/1995 |
| 5388325 | Process for fabricating a magnetic head core slider A core chip for a magnetic head core slider, including a first and a second core member which are bonded together so as to define a coil-winding aperture. The two core members cooperate to provide a gap-forming portion defining a magnetic gap on one side ... | 02/14/1995 |
| 5333372 | Method of manufacturing a magnetic head A method for manufacturing a magnetic head having a laminated core formed by alternately laminating metal magnetic layers and oxide layers on a non-magnetic substance base to a prescribed thickness. The method includes the steps of, positioning the lamina... | 08/02/1994 |
| 5319210 | Neutron dosimetry using three-dimensional optical memory A dosimetry method, dosimeter and system characterized by the steps of storing information in a three dimensional optical memory element, then exposing the optical memory element to neutron or other high LET radiation to alter the information stored in th... | 06/07/1994 |
| 5297330 | Method of producing core slider for rigid magnetic disc drive Method of producing a core slider for a rigid magnetic disk drive, including a slider body having air bearing portions, and a core chip which has a magnetic gap for writing and reading information and which is integrally secured to the slider body. The sl... | 03/29/1994 |
| 5296312 | Non-magnetic substrate material and floating-type magnetic head A non-magnetic substrate material which contains 0.5%-3% of Al2 O3 and 3%-16% of at least either ZnO or SnO2 (but with ZnO+SnO2 | 03/22/1994 |
| 5267113 | Magnetic head There is disclosed a magnetic head which can be used for various magnetic disk drives and easily and economically fabricated. The head comprises a magnetic core consisting of a ferrite. The core is composed of two parts bonded together with a glass. A gap... | 11/30/1993 |
| 5233492 | Flying type composite magnetic head having Mn-Zn ferrite core A floating magnetic head comprises a pair of magnetic core pieces which face each other through a gap and a metal magnetic film formed on the surface facing the gap of one of the pair of magnetic core pieces. The pair of magnetic core pieces are made of a... | 08/03/1993 |
