Did You Know...
...that in 1800 ether was first used by partyers as a fun diversion? Sniffing the gas led to hilarious and raucous laughter as people watched each other become more and more intoxicated and silly. Several doctors independently realized the value ether would have to anesthetize surgery patients. Of those who claimed rights to the "discovery," none had a happy ending. One had a seizure and died defending his rights. Another spent his life in an asylum because he had been denied acclaim. A third became addicted to chloroform and, in a New York City jail, he soaked a cloth in the drug, severed an artery and bled to death.
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| Number | Title | Issue Date |
| 8136226 | Read sensors and methods of making same with back-edge milling and refilling Methods and apparatus provide a refill configuration adjacent a back-edge that defines a height of a magnetoresistive read sensor. Milling through layers of the sensor forms the back-edge and may be initially conducted at a first angle of incidence greater than a se... | 03/20/2012 |
| 8051551 | Method for fabricating a magnetic head having selectively defined reader gap thicknesses A method for fabricating a magnetic head having multiple readers includes forming a plurality of generally laterally positioned lower shields; forming a lower gap layer above each lower shield; forming a sensor above each lower gap layer; forming an upper gap layer ... | 11/08/2011 |
| 8018676 | Optimized write pole flare angle for side shield or semi side shield PMR writer application Improved writability and a reduction in adjacent track erasure are achieved in a PMR writer with a large flare angle of 45 and 90 degrees in the main write pole and a full side shield or partial side shield configuration around the narrow write pole section and writ... | 09/13/2011 |
| 7934309 | Methods of fabricating exchange-coupling film, magnetoresistive element, and thin-film magnetic head The method of fabricating an exchange-coupling film in accordance with the present invention comprises a multilayer body forming step of forming a multilayer body having an antiferromagnetic layer and a ferromagnetic layer laminated on the antiferromagnetic layer; a... | 05/03/2011 |
| 7895731 | Method for manufacturing magnetic field detecting element utilizing diffusion and migration of silver A method for manufacturing a magnetic field detecting element having a free layer whose magnetization direction is variable depending on an external magnetic field and a pinned layer whose magnetization direction is fixed and these are stacked with an electrically c... | 03/01/2011 |
| 7891081 | Process of manufacturing a side pinned magnetic recording sensor A process is described for the fabrication of a magnetic read head in which contact between the pinned layer and the AFM is limited to their edges. The principal steps are to deposit an antiferromagnetic layer and to then pattern it into a pair of antiferromagnetic ... | 02/22/2011 |
| 7877859 | Shield fabrication of magnetic write heads Methods are provided for fabricating a write head with a self aligned wrap around shield and a self aligned flared region of a write pole. A flare point and a track width of a write pole may be fabricated using multiple processes. The multiple processes utilize seve... | 02/01/2011 |
| 7802357 | Method of forming plating film, method of manufacturing magnetic device and method of manufacturing perpendicular magnetic recording head A method of forming a plating film capable of improving magnetic properties is provided. A photoresist pattern, having a first opening with an aspect ratio greater than 1 and a second opening with an aspect ratio smaller than that of the first opening, is formed on ... | 09/28/2010 |
| 7788795 | Method for manufacturing a magnetic head A method for manufacturing a magnetic head that is effective for the suppression of thermal protrusion. The magnetic head includes SiO2, Si nitride, or Si oxide as a coil insulator having a low coefficient of thermal expansion and high workability. The co... | 09/07/2010 |
| 7765677 | Method for manufacturing a magnetic write head using a protective layer to prevent write pole consumption A method of manufacturing a write pole that prevents P2 pedestal consumption during ion milling removal of coil and pole seed layers. The write head can be constructed by forming a first pole and then forming a magnetic pedestal (P2) over the first pole. A protectiv... | 08/03/2010 |
| 7603763 | Method for manufacturing a magnetoresistive multilayer film A method for manufacturing a magnetoresistive multilayer film. An antiferromagnetic layer, a pinned-magnetization layer, a nonmagnetic spacer layer and a free-magnetization layer are laminated on a substrate in this order. A film for the antiferromagnetic layer is d... | 10/20/2009 |
| 7596853 | Method of manufacturing thin film magnetic head having lower shield layer embedded in insulating The method of manufacturing a thin film magnetic head includes forming a first recessed portion for insulation and a second recessed portion for contact that reach the substrate through the first insulating layer from a side of the first insulating layer of the subs... | 10/06/2009 |
| 7562436 | Deposition defined trackwidth for very narrow trackwidth CPP device In one embodiment, a method of forming a CPP sensor comprises providing a sensor having a hard mask disposed on a left side thereof and a right side with a portion of the sensor material removed therefrom, the hard mask having a vertical surface; forming a right die... | 07/21/2009 |
| 7536774 | Method and apparatus for integrating a stair notch and a gap bump at a pole tip in a write head A method and apparatus for integrating a stair notch and a gap bump at a pole tip in a write head is disclosed. A protective plated layer is formed over the bump to prevent the bump form being damaged during formation of the notch at the pole tip. The flux from the ... | 05/26/2009 |
| 7444738 | Method for tunnel junction sensor with magnetic cladding Methods and apparatus are provided for sensing physical parameters. The apparatus comprises a magnetic tunnel junction (MTJ) and a magnetic field source whose magnetic field overlaps the MTJ and whose proximity to the MTJ varies in response to an input to the sensor... | 11/04/2008 |
| 7443635 | Magnetic detector including antiferromagnetic layer, amorphous barrier layer, base layer, and hard layer arranged in that order and method for manufacturing magnetic detector A multilayer film is placed on a subatrate. The multilayer film includes an antiferromagnetic layer, a pinned magnetic layer, a non-magnetic material layer, and a free magnetic layer. The multilayer film has recessed sections arranged in both side regions thereof, t... | 10/28/2008 |
| 7441325 | Perpendicular head with trailing shield and rhodium gap process A perpendicular write head including a main pole and a trailing shield, the main pole being made of a diamond-like carbon (DLC) layer as hard mask and a rhodium (Rh) layer as shield gap, both DLC and Rh layers being CMP stop layers so as to avoid corner rounding and... | 10/28/2008 |
| 7436627 | Magnetic head for perpendicular magnetic recording and method of manufacturing same A pole-layer-encasing layer made of a nonmagnetic material is disposed on an underlying layer made of a nonmagnetic conductive material. The encasing layer has a groove that penetrates. A pole layer is disposed in the groove. The pole layer is formed by plating thro... | 10/14/2008 |
| 7420780 | Thin laminated single pole perpendicular write head Single write poles tend to large shape anisotropy which results in a very large remnant field when not actually writing. This has now been eliminated by giving the write pole the form of a three layer laminate in which two ferromagnetic layers are separated by a non... | 09/02/2008 |
| 7418777 | Method on manufacturing spin valve film A method of manufacturing a spin valve film, produces a large read out signal. After a completion of a film making process for forming a previous film of two films to be formed successively, but before an initiation of a film making process for forming a succeeding ... | 09/02/2008 |
| 7418778 | Method for producing a CPP thin-film magnetic head A CPP thin-film magnetic head includes a bottom shield layer; a top shield layer, the bottom shield layer and the top shield layer being disposed at a predetermined interval; a thin-film magnetic head element between the bottom shield layer and the top shield layer;... | 09/02/2008 |
| 7398591 | Manufacturing method of a thin-film magnetic head The present invention relates to a manufacturing method of a thin-film magnetic head whereby re-deposition and an overlapped part in a region of a magnetoresistive effect multi-layered structure opposite to an air bearing surface can be removed and also a width of a... | 07/15/2008 |
| 7398592 | Manufacturable CMP assisted liftoff process to fabricate write pole for perpendicular recording heads This invention describes a manufacturable method, including a CMP liftoff process, for removing masking materials after ion milling for fabricating the write pole of a magnetic head. Significant parameters for the CMP assisted liftoff process include the thickness o... | 07/15/2008 |
| 7395595 | Method for manufacturing P3 layer of a perpendicular magnetic write head A method for forming a P3 layer with NiFe and alumina mask using resist shrink process for use in perpendicular magnetic write heads. The method includes forming a laminated layer, forming an alumina layer on top of the laminated layer, depositing a conductiv... | 07/08/2008 |
| 7397111 | Semiconductor wafer, an electronic component, and a component carrier for producing the electronic component An electronic component includes a semiconductor chip with a chip topside, an integrated circuit, and a chip backside. The chip backside includes a magnetic layer. The electronic component further includes a chip carrier with a magnetic layer on its carrier topside.... | 07/08/2008 |
| 7392580 | Method for manufacturing a slider using electromagnetic wave A method for manufacturing sliders from a bar has: a radiating step which includes radiating an electromagnetic wave on at least a part of each space on a second surface of said bar, wherein said second surface is a back surface of a first surface of said bar, said ... | 07/01/2008 |
| 7392577 | Method for manufacturing a perpendicular magnetic head A method of manufacturing a perpendicular magnetic head is disclosed, including perpendicular magnetic recording head includes forming a primary magnetic pole having a flat top surface, where a shield layer over the primary magnetic pole and at the sides of the prim... | 07/01/2008 |
| 7392579 | Method for protecting a slider mounted CPP GMR or TMR read head sensor from noise and ESD damage A slider mounted CPP GMR or TMR read head sensor is protected from electrostatic discharge (ESD) damage and from noise and cross-talk from an adjacent write head by means of a balanced resistive/capacitative shunt. The shunt includes highly resistive interconnection... | 07/01/2008 |
| 7389578 | Manufacturing method of a perpendicular recording magnetic head Embodiments in accordance with the present invention relate to methods wherein when a main pole is processed by using an ion milling technique, a re-adhesion layer created on the side face of the resist mask is removed with certainty. In one embodiment, an inorganic... | 06/24/2008 |
| 7389577 | Method to fabricate an ESD resistant tunneling magnetoresistive read transducer A method to fabricate a tunneling magnetoresistive (TMR) read transducer is disclosed. An insulative layer is deposited on a wafer substrate, and a bottom lead is deposited over the insulative layer. A laminated TMR layer, having a plurality of laminates, is deposit... | 06/24/2008 |
| 7389575 | Method of manufacturing permanently magnetized elements There is disclosed a method of manufacturing a plurality of removable permanently magnetized elements from a substrate comprising ferrite material. The method prints symbol images on the substrate with an offset, automatic sheet-fed press, and die cuts the symbol im... | 06/24/2008 |
| 7386934 | Double layer patterning and technique for milling patterns for a servo recording head Double photolithography is used to produce an under-layer of protective and filtering photoresist over a substrate that will have channels milled with a FIB. Secondary layers are applied with precision on top of the first layer in order to define the precise pattern... | 06/17/2008 |
| 7386933 | Method of fabricating thin film write heads with a shortened yoke and improved dimension control A method for fabricating a magnetic recording head writer. The writer includes a bottom magnetic pole and a write gap formed over the bottom pole and a coil trench formed in the bottom pole. A top magnetic pole is provided as two layers with the first layer includin... | 06/17/2008 |
| 7383626 | Methods for fabricating giant magnetoresistive (GMR) devices In a method of fabricating a giant magnetoresistive (GMR) device a plurality of magnetoresistive device layers is deposited on a first silicon nitride layer formed on a silicon oxide layer. An etch stop is formed on the magnetoresistive device layers, and a second l... | 06/10/2008 |
| 7380330 | Method for making magnetic write head After defining the P2 pole of a magnetic read head, alumina is deposited over it and planarized by CMP, with the portion of the alumina overlaying the ABS region of the P2 pole subsequently being masked by a photoresist layer and with the portions of the alumina ove... | 06/03/2008 |
| 7380331 | Methods for forming a reed sensor A method comprises depositing first and second lead layers in end regions which surround a central region; and forming a read sensor in the central region such that a first edge of the read sensor is disposed above an edge of the first lead layer and a second edge o... | 06/03/2008 |
| 7377024 | Method of making a magnetic write head with trailing shield throat pad A method of fabricating a magnetic transducer is described which uses a trailing shield throat pad to set the trailing shield throat height. The trailing shield throat pad is used as a part of the structural form over which the material for the trailing shield is fo... | 05/27/2008 |
| 7370404 | Method for resetting pinned layer magnetization in a magnetoresistive sensor A spin valve sensor in a read head has a spacer layer which is located between a self-pinned AP pinned layer structure and a free layer structure. The free layer structure is longitudinally stabilized by first and second hard bias layers which abut first and second ... | 05/13/2008 |
| 7372656 | disk drive with side erase control Embodiments of the invention provide a disk drive that is capable of effectively controlling a side erase, which is one of the problems with the use of the perpendicular recording technology. In one embodiment, tracks on a recording medium are formed concentrically ... | 05/13/2008 |
| 7370405 | Fabrication method of a high gradient-field recording head for perpendicular magnetic recording A thin film magnetic head for perpendicular recording of a single-pole type has a flux enhanced part and a flux enhanced end arranged on a leading side of the main pole in parallel with the cross track direction. The side surface of the main pole intersecting the cr... | 05/13/2008 |
