Celebrity Inventors
Mark Twain (Samuel L. Clemens) received Patent No. 121,992 for "An Improvement in Adjustable and Detachable Straps for Garments." He later received two more patents: one for a self-pasting scrapbook and one for a game to help players remember important historical dates.
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| Number | Title | Issue Date |
| 8189292 | Method for manufacturing a magnetic write head having a write pole with a trailing edge taper using a Rieable hard mask A method for manufacturing a magnetic write head having a write pole with a tapered, stepped trailing edge. The method includes depositing a magnetic write pole material over a substrate, and then forming a magnetic step structure over the magnetic write pole materi... | 05/29/2012 |
| 8189293 | Perpendicular magnetic recording head having a grooved wrap around shield and method for manufacturing the same According to one embodiment, a perpendicular magnetic recording head includes a shield having a groove and a main magnetic pole positioned in the groove of the shield. The groove includes a bottom side near a leading edge of the shield and inclined sides extending f... | 05/29/2012 |
| 8134801 | Electromagnetic data storage devices A magnetic recording and reading device, free from coil windings, includes a naturally magnetic material that defines a pair of opposite magnetic poles and defines a magnetic field. A conductor in operable association with an integrated circuit array provided at eac... | 03/13/2012 |
| 8098455 | Wire-assisted magnetic write device with phase shifted current A magnetic device includes a write element having a write element tip and a conductive coil for carrying a current to induce a first field from the write element. A conductor proximate the write element tip carries the current to generate a second field that augment... | 01/17/2012 |
| 8089295 | Wafer level balanced capacitance design for magnetic heads Embodiments of the invention provide methods, systems and apparatus for testing electronic components, and more specifically for testing magnetoresistive heads. A pair of top shield pads and a pair of bottom shield pads may be formed in a kerf region of a wafer on w... | 01/03/2012 |
| 8064159 | Current perpendicular to plane (CPP) magnetic read head One general embodiment of the present invention is a magnetic read head including a magnetoresistive sensor where sense current flows in a stacking direction of the magnetoresistive sensor, i.e., perpendicular to the plane of the layers of the head. The magnetoresis... | 11/22/2011 |
| 7940494 | Magnetic recording medium, magnetic recording and reproducing apparatus, and method for manufacturing magnetic recording medium The magnetic recording medium includes a substrate and a recording layer formed in a predetermined concavo-convex pattern over the substrate, the recording layer including recording elements each formed as a convex portion of the recording layer. Surface steps are f... | 05/10/2011 |
| 7848052 | Use of grating structures to control asymmetry in a magnetic sensor The present invention provides apparatus and method for controlling the asymmetrical properties of the response of a magnetic sensor element to a magnetic field produced by the digital data in a magnetic storage device. The present invention also provides an apparat... | 12/07/2010 |
| 7663838 | Production method for magnetic recording medium A production method for a magnetic recording medium including forming thin films on a substrate using a sputtering method with a target, wherein the target on which an annular-shaped erosion area is formed during sputtering and a substrate holder on which a pluralit... | 02/16/2010 |
| 7633712 | Method to print photoresist lines with negative sidewalls A write pole for vertical magnetic recording is described. It includes a trapezoidal prism of high magnetic moment material, having inwardly sloping sidewalls. Its parallel surfaces are between about 0.1 and 0.3 microns apart and the sidewalls slope in the range of ... | 12/15/2009 |
| 7545602 | Use of grating structures to control asymmetry in a magnetic sensor The present invention provides apparatus and method for controlling the asymmetrical properties of the response of a magnetic sensor element to a magnetic field produced by the digital data in a magnetic storage device. The present invention also provides an apparat... | 06/09/2009 |
| 7428115 | Magnetic hard disk drive with countermeasure against spike noise Embodiments of the invention provide a countermeasure against spike noise maintaining the data reliability of a magnetic recording layer. In one embodiment, the magnetic domain state right below and around the read head of the soft magnetic layer in the recording me... | 09/23/2008 |
| 7372116 | Heat assisted switching in an MRAM cell utilizing the antiferromagnetic to ferromagnetic transition in FeRh A magnetic memory cell for use in a magnetic random access memory array that uses the antiferromagnetic to ferromagnetic transition properties of FeRh to assist in the control of switching of the memory cell. ... | 05/13/2008 |
| 7368227 | Method to print photoresist lines with negative sidewalls It is very difficult to produce a negative wall angle from either negative or positive-tone chemically amplified resists, especially by e-beam lithography. This problem has now been overcome by first forming a photoresist pedestal in the conventional way, followed b... | 05/06/2008 |
| 7359155 | Slider, head assembly and disk apparatus Disclosed is a slider which is substantially rectangular and has a disc facing surface with an air inflow end and an air outflow end in the longitudinal direction, comprising a first positive pressure-generating section disposed near the air inflow end; a pair of se... | 04/15/2008 |
| 7355396 | Apparatus for controlling and adjusting the magnetic state of a magnetic probe and the applications thereof An apparatus for controlling and adjusting the magnetic state of a magnetic probe for detecting magnetic signals of a sample, it employs a negative feedback control unit to counter the change of magnetization of the magnetic probe. The local magnetic field of the sa... | 04/08/2008 |
| 7355813 | Method of fabricating a narrow projection such as a write pole extending from a substrate An article is formed as a substrate having a projection extending outwardly therefrom. The article may be a magnetic recording head and the projection a write pole. The projection has a width in a thinnest dimension measured parallel to a substrate surface of no mor... | 04/08/2008 |
| 7333296 | Magnetic head for perpendicular magnetic recording including pole-layer-encasing layer that opens in the top surface thereof and nonmagnetic conductive layer disposed on the top surface of the pole-layer-encasing layer A pole layer is disposed in a groove of a pole-layer-encasing layer made of a nonmagnetic material with a nonmagnetic film disposed between the encasing layer and the pole layer. A polishing stopper layer made of a nonmagnetic conductive material is disposed on the ... | 02/19/2008 |
| 7330336 | Dual polarity bias for prolonging the life of a heating element in magnetic data storage devices A magnetic read/write head having a heating element to induce a desired amount of thermal protrusion in the read and write elements to control the fly height of the read and write elements over a magnetic medium. The heating element is connected with circuitry that ... | 02/12/2008 |
| 7325294 | Method of making electromagnetic wave shielded write and read wires on a support for a magnetic media drive A method of making electromagnetic wave shielded read and write wires is provided. The method includes forming a bottom insulation layer on a bottom shield layer formed on a substrate. Then, forming electrically conductive wire material into openings in a first form... | 02/05/2008 |
| 7313863 | Method to form a cavity having inner walls of varying slope An improved mold, for use in the formation of a perpendicular magnetic write head, is described, together with a process for its manufacture. Conventional alumina is replaced by tantalum in the yoke portion of the mold. When both the tantalum and the alumina areas a... | 01/01/2008 |
| 7300712 | Magnetic sensor and position detector In a magnetic sensor (1) including a substrate (10) having a magnetism-sensitive element (11) formed thereon, a hard membrane (14) is formed on the outermost surface, an organic film (13) to relieve the stress caused by the hard me... | 11/27/2007 |
| 7301727 | Return pole of a transducer having low thermal induced protrusion A transducer including a return pole having a return pole tip extending to an external surface of the transducer. The external surface of the return pole tip has an area that is larger than a cross-sectional area of the return pole taken parallel to the external sur... | 11/27/2007 |
| 7294418 | Magnetic film for magnetic head The magnetic film includes an FeCo layer, restrains erasing data by a magnetic field leaked from a magnetic pole, has high saturation magnetic flux density and soft magnetism and writes data with high recording density. The magnetic film for a magnetic head of the p... | 11/13/2007 |
| 7292414 | External coil bias for giant magneto-resistive sensor A disk includes a perpendicular recording disk, a head having a read portion to read information recorded on the perpendicular recording disk, a sensor in the read portion, and a coil structure, coupled to the read portion, to provide bias flux to the sensor. The co... | 11/06/2007 |
| 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 |
| 7264844 | Forming oxide buffer layer for improved magnetic tunnel junctions A metal manganese oxide buffer layer is used to seed a barrier layer in a magnetic tunnel junction memory element having pinned and free magnetic layers. An alumina tunnel barrier layer is formed on the oxidized metal manganese layer with the barrier layer and oxidi... | 09/04/2007 |
| 7248447 | High Hc pinned self-pinned sensor A self pinned magnetoresistive sensor having an anitparallel coupled pinned layer structure including a high coercivity (high Hc) layer of TbCo. ... | 07/24/2007 |
| 7241516 | Soft magnetic underlayer with exchange coupling induced anisotropy for perpendicular magnetic recording media An improved soft underlayer structure for perpendicular magnetic recording. The structure includes at least two soft underlayers separated by a non-magnetic spacer layer. The soft underlayer structure incorporates exchange coupling induced anisotropy for improved pe... | 07/10/2007 |
| 7241515 | Electrode layer for thin-film magnetic heads An electrode layer for thin-film magnetic heads includes a Ta base sub-layer, an Au sub-layer functioning as a main conductive sub-layer, and a protective sub-layer, those sub-layers being disposed in that order. An Au electrode seed sub-layer containing any one of ... | 07/10/2007 |
| 7239481 | Magnetic head having multilayer heater for thermally assisted write head and method of fabrication thereof A magnetic head including a media heating device that is preferably fabricated within the magnetic head structure. The heating device preferably includes an electrical heating element and electrical leads, where an insulation layer disposed above the heating element... | 07/03/2007 |
| 7230793 | Magnetic recording head with anisotropic medium placed between poles A magnetic recording head includes a head body having an end divided into two parts, the two parts facing each other with a predetermined distance therebetween, first and second poles that are disposed on the two parts of the head body, respectively, to form a magne... | 06/12/2007 |
| 7224556 | Self-pinned CPP magnetoresistive sensor A charge-perpendicular-to-plane self-pinned magnetic tunnel junction sensor is provided. Additionally, a disk drive using a charge-perpendicular-to-plane self-pinned magnetic tunnel junction sensor as the read element is provided. ... | 05/29/2007 |
| 7224547 | Increasing head-disk interface reliability using controlled heating A method for increasing reliability during a read and/or write operation in a disk drive having a head. Data is read from a disk using a head. An amplitude of a signal obtained during reading the data is measured. A degree of variation in the signal amplitude is det... | 05/29/2007 |
| 7223485 | Magnetoresistive device, magnetoresistive head and magnetic recording-reproducing apparatus A magnetoresistive device includes a magnetization pinned layer, a magnetization free layer, a nonmagnetic intermediate layer formed between the magnetization pinned layer and the magnetization free layer, and electrodes allowing a sense current to flow in a directi... | 05/29/2007 |
| 7218486 | Extended pinned layer on top of lead/HB to avoid amplitude flipping A magnetoresistive sensor having a self pinned structure formed above a free layer and having a pinning stabilization structure to avoid flipping of the magnetic moment of the pinned layer. The pinned layer stabilization structure includes hard magnetic structures f... | 05/15/2007 |
| 7217666 | Reactive ion milling/RIE assisted CMP A method for forming a high aspect ratio magnetic structure in a magnetic write head using a combination of chemical mechanical polishing and reactive ion etching. ... | 05/15/2007 |
| 7212001 | Fluxgate sensor integrated having pick-up coil mounted on excitation coil in printed circuit board and method for manufacturing the same A fluxgate sensor is integrated in a printed circuit board. The fluxgate sensor has two bar-type(or rectangular-ring shaped) soft magnetic cores to form a closed magnetic path on a printed circuit board and an excitation coil in the form of a metal film is wound aro... | 05/01/2007 |
| 7208065 | Structure for measuring the etching speed The specification discloses a structure and method for measuring the etching speed. A test layer is connected with several resistors. Etching the metal layer disconnects in order the resistors from the circuit. The equivalent resistance of the sensing resistor syste... | 04/24/2007 |
| 7195749 | Chemical-pressure tailoring of low-field, room temperature magnetoresistance in (Ca, Sr, Ba) FeMoO The room temperature, low field intergrain magnetoresistance (IMR) of the double perovsktite SrFe0.5MO0.5O3 is found to be highly tunable by doping either Ca or Ba into the Sr site. The dopant exerts a chemical pressure, changing the... | 03/27/2007 |
