Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 8146235 | Method of aligning components for installation on a head suspension assembly A head suspension for supporting a head slider over a storage media in a dynamic storage device is provided with a head suspension component having a spring metal layer, an electrically conductive layer and a dielectric layer interposed between the metal layer and t... | 04/03/2012 |
| 8127433 | Method of manufacturing a glass substrate for magnetic disk In a manufacturing method of a glass substrate for a magnetic disk including a cleaning process of the glass substrate, the cleaning process includes a process of contacting the glass substrate with a cleaning solution containing a compound, such as thioglycolic aci... | 03/06/2012 |
| 8117736 | Method of lapping a magnetic head slider A method of lapping a magnetic head slider includes a step of lapping a lapping surface of a row bar provided with a plurality of MR read head elements arranged along at least one line, a step of obtaining at least one output signal from at least one of the pluralit... | 02/21/2012 |
| 7716811 | Method for manufacturing a thin film magnetic head Head elements are formed on a wafer to suppress deterioration in pinning strength of a pinned layer, which is caused by ESD generated during air bearing surface polishing of a thin film magnetic head. The wafer is cut into rovers in each of which are connected head ... | 05/18/2010 |
| 7661188 | Method of manufacturing glass substrate for magnetic disk In a manufacturing method of a glass substrate for a magnetic disk including a cleaning process of the glass substrate, the cleaning process includes a process of contacting the glass substrate with a cleaning solution containing a compound, such as thioglycolic aci... | 02/16/2010 |
| 7401398 | Method of manufacturing a magnetic element for multi-phase A magnetic element for multi-phase is composed by burying a plurality of coils in a composite magnetic material such that a negative coupling of magnetic fluxes or a positive coupling of magnetic fluxes exists between at least two coils. This structure more miniatur... | 07/22/2008 |
| 7398590 | Applying mechanical shock to a data storage device with an enclosed low-density gas The present invention relates to a method of manufacturing low-density gas-filled disk drives involving test equipment utilized to determine gas leaks occurring in disk drives subjected to shock and vibration events. A disk drive is placed in a sealed container, whi... | 07/15/2008 |
| 7371488 | Method of manufacturing magnetic head Provided is a method of manufacturing a magnetic head with which bonding of a slider and a suspension can be performed by taking an ABS pattern, which determines flying characteristics, as a reference, with no special fabrication required on the slider or the suspen... | 05/13/2008 |
| 7369361 | Magnetic head and magnetic head substructure including resistor element whose resistance corresponds to the length of the track width defining portion of the pole layer A method of manufacturing magnetic heads comprises the step of: fabricating a magnetic head substructure by forming components of a plurality of magnetic heads on a single substrate, wherein a plurality of rows of pre-head portions that will be the respective magnet... | 05/06/2008 |
| 7362548 | Magnetic sensor and manufacturing method therefor A magnetic sensor comprises magnetoresistive elements and permanent magnet films, which are combined together to form GMR elements formed on a quartz substrate having a square shape, wherein the permanent magnet films are paired and connected to both ends of the mag... | 04/22/2008 |
| 7359152 | Thin film magnetic head structure, method of manufacturing the same, and method of manufacturing thin film magnetic head The present invention provides a method of manufacturing a thin film magnetic head in which MR height and neck height can be determined with high precision. A plurality of thin film magnetic head bars are formed so as to include a plurality of thin film magnetic hea... | 04/15/2008 |
| 7340824 | Method for fabricating a magnetic head having an improved magnetic shield A first magnetic shield layer of the read head sensor is deposited upon a slider substrate surface. A patterned photoresist is then photolithographically fabricated upon the first magnetic shield layer with openings that are formed alongside the location at which th... | 03/11/2008 |
| 7340823 | Methods for forming head suspension assemblies Embodiments include a method for forming a head suspension assembly. A spacer layer is formed in or on a silicon wafer. A transfer film including an opening defining the shape of a slider support membrane is provided, and the opening is filled with a resin material.... | 03/11/2008 |
| 7333300 | Magnetoresistive device with lapping guide treated to eliminate magnetoresistive effect thereof A method for reducing noise in a lapping guide. Selected portions of a Giant magnetoresistive device wafer are masked, thereby defining masked and unmasked regions of the wafer in which the unmasked regions include lapping guides. The wafer is bombarded with ions su... | 02/19/2008 |
| 7308752 | Method for making an optical pickup apparatus having a movable unit supported by springs attached to a fixed unit An optical pickup apparatus is described which includes a movable unit with an objective lens, a focus servo coil for moving the moveable unit containing the objective lens in the optical-axis direction, and tracking servo coils for moving the moveable unit containi... | 12/18/2007 |
| 7304824 | Plated base plate for suspension assembly in disk drive A swage mount for a recording head suspension comprising a flange, and a hub made of a base metal extending from the flange, and at least an outer surface of the hub is plated with one or more layers of metal which provides increased retention torque, and/or increas... | 12/04/2007 |
| 7301647 | Method for regulating shape of floatation surface of slider floating above record carrier A method for manufacturing a slider including a head for recording data into and reproducing data from a record carrier, and a floatation surface that floats above the record carrier includes the steps of setting an orthogonal coordinate system having an origin as a... | 11/27/2007 |
| 7287313 | Method for preventing magnetic damage to a GMR head during back-end processing A method is provided for preserving the transverse biasing of a GMR (or MR) read head during back-end processing. In a first preferred embodiment, the method comprises magnetizing the longitudinal biasing layers of the read head in a transverse direction, so that th... | 10/30/2007 |
| 7275302 | Method of forming a disc pack A method of forming a disc pack for use in a disc drive is provided. The method includes forming at least one alignment feature between an inner diameter and an outer diameter of each of a plurality of discs. The at least one alignment feature of a first disc of the... | 10/02/2007 |
| 7256963 | Magnetic head with adaptive data island and mini-outrigger and methods of manufacture In one aspect, an exemplary method of manufacturing a magnetic head assembly is provided. In one example, the method includes forming islands in a magnetic head structure to define a pair of mini-outriggers adjacent a data island, where the data island is separated ... | 08/14/2007 |
| 7254884 | Method for fabricating a pole tip in a magnetic transducer using feed-forward and feedback Methods for fabricating pole piece tips for a magnetic transducer are disclosed. The ion-milling operations for trimming P2 and notching P1 are controlled using feed-forward and feedback. The preferred method of the invention includes steps for setting... | 08/14/2007 |
| 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 |
| 7248436 | Thin film magnetic head and method of manufacturing the same Provided are a thin film magnetic head and a method of manufacturing the same, which can locally miniaturized a pole width with high accuracy. A thin film coil is provided in a region located more rearward than a position (a first position) of a rear end of a top sh... | 07/24/2007 |
| 7236328 | Method for producing a transducer slider with tapered edges The present invention relates to a method for producing a transducer slider. The method involves first coating a substrate with a radiation-sensitive layer and exposing the radiation-sensitive layer to radiation according to an intensity pattern. Preferably, the int... | 06/26/2007 |
| 7219413 | Adjusting system and method for head slider mounting regions on head suspensions A method for adjusting static attitude of a head suspension is provided that includes providing an adjustment pin and adjusting the static attitude of a supported head suspension by contacting the head suspension with the adjustment pin to cause a predetermined atti... | 05/22/2007 |
| 7212381 | Slider having adjusted transducer recession and method of adjusting recession A method and apparatus are provided for adjusting recession of an element, such as a pole tip, in a transducer structure formed in a plurality of thin film layers on an edge of a slider. A pre-stressed structure is formed as part of the plurality of thin film layers... | 05/01/2007 |
| 7207097 | Method for making an actuator assembly for supporting a read/write device in an information storage device An actuator assembly for supporting a read/write device in an information storage device having an actuator arm having at least one tower protruding from a first surface of the actuator arm, a loadbeam having at least one tower receiving means for receiving the at l... | 04/24/2007 |
| 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 |
| 7191508 | Method for manufacturing thin-film magnetic head sliders A method for manufacturing thin-film magnetic head sliders is disclosed. Initially, an elastic layer, which may be made of poly-dimethyl siloxane (PDMS), is spun on a wafer and is thermally cured. Then, a resist layer is spun on the elastic layer. Both the resist la... | 03/20/2007 |
| 7185415 | Method for forming a magnetic head having a flux shaping layer A method for fabricating a magnetic head includes forming a first pole and a flux shaping layer in spaced relation to the first pole. A nonmagnetic layer is formed adjacent the flux shaping layer and positioned on an air bearing surface (ABS) side of the flux shapin... | 03/06/2007 |
| 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 |
| 7167339 | Method for producing and inspecting tape head air-skiving edges A method is provided for providing air-skiving edges of a tape head. A slot is created in an upper face of a substrate of a tape head. The slot includes at least one edge defining an edge of a tape bearing surface (TBS) of the tape head. The surface of the tape head... | 01/23/2007 |
| 7167345 | Magnetoresistive effect sensor including a magnet array of a plurality of permanent magnets A magnetic sensor provided with a magnetoresistive effect element capable of stably maintaining a direction of magnetization in a magnetic domain of a free layer. The magnetic sensor includes a magnetoresistive effect element provided with narrow zonal portions incl... | 01/23/2007 |
| 7167368 | Electronic equipment case structure An electronic equipment case structure aims to provide bracing and cooling for an electronic element. The electronic equipment is housed in the case which has a plurality of protrusive sections on the outer side that are spaced from one another at a selected distanc... | 01/23/2007 |
| 7147539 | Head performance based nano-machining process control for stripe forming of advanced sliders The present invention is a method of using direct head electrical response signals for feedback process control. When lapping the air bearing surface of a bar of sliders, a magnetic field is applied to the air bearing surface and a bias current is applied to the rea... | 12/12/2006 |
| 7140094 | Magnetic head and production method for magnetic heads Magnetic heads capable of recording and reading with high sensitivity and resolution are provided by minimizing the outflow of magnetic fluxes from a flux guide to magnetic shields while using a flux guide structure for an MR element. In the magnetic head, magnetic ... | 11/28/2006 |
| 7133257 | Control of twist, crown and camber for sliders using location sensitive scribing Embodiments include a method for adjusting the twist, crown and camber of an air bearing surface a slider to substantially match final target values for twist, crown and camber, the slider having a back surface opposite the air bearing surface. The method includes t... | 11/07/2006 |
| 7129177 | Write head fabrication by inverting order of process steps During fabrication of a write head via holes are first opened in a gap layer, followed by formation of seed layers instead of the other way around. Moreover a first seed layer is formed, and without the first seed layer being used a second seed layer is formed. The ... | 10/31/2006 |
| 7127799 | Head gimbal assembly method The present invention provides a method for assembling a head gimbal assembly useful in a hard disk drive and for testing such an assembly. In a method in accord with the present invention a head/slider is mounted to a circuited gimbal in an automated assembly machi... | 10/31/2006 |
| 7124497 | Method of controlling localized shape of a data head and for characterizing the shape A method and apparatus are provided characterizing the shape of a surface such as a bearing surface on a slider and for processing the shape. The shape is characterized by fitting a curve having a desired shape to measurement data and then determining residual devia... | 10/24/2006 |
