Patents
Patents for G11B 5 - Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor (87,826)
12/2004
12/08/2004CN1179326C Magnetic head and its manufacture method
12/08/2004CN1178766C Magnetic head grinding device and method
12/07/2004US6829213 Optical recording and/or reproducing apparatus and head thereof
12/07/2004US6829206 Information recording and reproducing method and information recording and reproducing device
12/07/2004US6829201 Magnetic information recording medium having regions magnetized in different directions, a method for recording and reproducing for the same, and a method of manufacturing the same
12/07/2004US6829122 Magnetic head of a magnetoresistance type having an underlying layer having a laminated structure of a tungsten-group metal layer formed on a tantalum-group metal layer
12/07/2004US6829119 Disc drive microactuator with lateral position sensor
12/07/2004US6829118 Optical rotational position information detecting apparatus
12/07/2004US6829115 Method and apparatus for measuring half frequency whirl in a spindle motor
12/07/2004US6828897 Methods and compositions for optimizing interfacial properties of magnetoresistive sensors
12/07/2004US6828795 Explosive detection system
12/07/2004US6828785 Magneto-resistive effect element, magnetic sensor using magneto-resistive effect, magnetic head using magneto-resistive effect and magnetic memory
12/07/2004US6828784 Method and apparatus detecting base line popping noise in a read head and stabilizing the magnetic domain of merged magnetoresistive read-write heads using dc write current and read bias current for an assembled disk drive
12/07/2004US6828047 Magnetic recording medium and magnetic storage apparatus
12/07/2004US6828046 Magnetic recording media; heat and corrosion resistance
12/07/2004US6828039 Magnetoresistive sensor and manufacturing method therefor
12/07/2004US6828036 Anti-ferromagnetically coupled magnetic media with combined interlayer + first magnetic layer
12/07/2004US6827968 Dispersing a nonmagnetic carbon black powder in a nonmagnetic binder liquid, repeat same process with nonmagnetic powder other than carbon black, mixing the different liquids together, for covering a nonmagnetic substrate
12/07/2004US6827802 Optical recording head having a solid immersion lens
12/07/2004US6827282 Identifying card
12/07/2004US6826825 Method for manufacturing a magnetic recording medium
12/07/2004CA2331203C Communication system
12/02/2004WO2004105030A1 System and method for a subambient pressure air bearing slider utilizing negative pressure grooves
12/02/2004WO2004105025A1 Signal processing device and signal processing method
12/02/2004WO2004105016A1 Method and apparatus for maintaining consistent track pitch in helical scan recorder
12/02/2004WO2004105007A1 Method for making a nano-particulate medium
12/02/2004WO2004104994A2 Digital animation disk
12/02/2004WO2004104993A2 Method and system for adjustment of components in a head stack assembly
12/02/2004WO2004104122A2 Polishing composition for magnetic disks comprising a surface cleaning agent and polishing method
12/02/2004WO2004074855A3 Magnetic field sensor
12/02/2004WO2004072959A3 Disk coating system
12/02/2004WO2004044901A3 Method and apparatus for using vibration to clean a read/write head
12/02/2004WO2004040566A3 Processing scheme for domain expansion rom media
12/02/2004WO2004040565A3 Processing scheme for domain expansion rom media
12/02/2004US20040243899 Serializer/deserializer circuit for jitter sensitivity characterization
12/02/2004US20040243760 Magnetic tape data storage system buffer management
12/02/2004US20040242398 For use in information recording medium such as a magnetic disk, magneto-optical disk, DVD, or MD or of an optical communication device
12/02/2004US20040242131 System and method for edge blending hard drive head sliders
12/02/2004US20040242130 Grinding apparatus and method for manufacturing magnetic recording medium using the same
12/02/2004US20040241593 Method of forming uniform features using photoresist
12/02/2004US20040241500 Nonmagnetic substrate and soft magnetic layer, seed layer formed by sputtering, recording layer containing boron having multilayer film structure comprising alternately laminated cobalt and palladium
12/02/2004US20040241499 Magnetic recording medium
12/02/2004US20040241498 Support and magnetic layer containing abrasive, binder and ferromagnetic powder dispersed therein; improved running durability, electromagnetic characteristics, and low in head abrasion
12/02/2004US20040241497 comprises highly crosslinkable polyvinyl chloride or polyurethane resin, and controlled water content
12/02/2004US20040241455 silica, magnesia and yttria; high tensile strength, heat resistance, impact resistance; thinner size; produced at relatively low liquid phase temperature; improved surface smoothness and uniformity; magnetooptics
12/02/2004US20040241380 Disk substrate on which a magnetic layer, a carbon-based protection layer, an alcohol-based coupling layer, and a lubrication layer containing a hydroxyl- or a carboxyl-modified compound are deposited successively
12/02/2004US20040241379 where fine texturing marks are precisely formed in the radial direction and there are no abnormal protrusions; adding a polishing slurry to the substrate, pressing a polishing tape on the surface and running it in a direction opposite the rotation
12/02/2004US20040240374 Optical data recording medium and method for reproducing recorded data
12/02/2004US20040240360 Recording medium having data structure for managing main data additional content data thereof and recording and reproducing methods and apparatuses
12/02/2004US20040240349 Information recording and reproducing apparatus
12/02/2004US20040240347 Optical reproducing method for optical medium with aligned prepit portion
12/02/2004US20040240343 Apparatus and method for detecting synchronization of address in pre-groove for optical storage device
12/02/2004US20040240341 Recording medium having data structure for managing at least a data area of the recording medium and recording and reproducing methods and apparatuses
12/02/2004US20040240339 Positioning control device and positioning control method
12/02/2004US20040240327 Patterned media for heat assisted magnetic recording
12/02/2004US20040240125 Synthetic anti-parallel spin valve with thin AFM layer for very high density application
12/02/2004US20040240124 Thin-film magnetic head
12/02/2004US20040240123 Tunnel magnetoresistance effect device , and a portable personal device
12/02/2004US20040240122 Tunnel valve free layer stabilization system and method using additional current in lead
12/02/2004US20040240121 Magnetic recording head and method for manufacturing
12/02/2004US20040240120 Rotary disk storage device
12/02/2004US20040240119 Carriage arm assembly of disk drive
12/02/2004US20040240118 Wire support member and rotary disk storage device
12/02/2004US20040240117 Operating a proximity latch mechanism using an impact rebound crash stop for an outside disk ramp loading disk drive
12/02/2004US20040240116 Disk drive
12/02/2004US20040240115 One-piece suspension assembly including interconnect
12/02/2004US20040240114 Suspension of disc drive
12/02/2004US20040240113 Magnetic tape head assembly with laterally moveable central section
12/02/2004US20040240112 Particle remover for data storage device and ramp having the particle remover
12/02/2004US20040240111 Magnetic recording medium and method of fabricating the same
12/02/2004US20040240110 Thin film magnetic head, method of manufacturing the same, and magnetic recording apparatus
12/02/2004US20040240109 Magnetic recording head with heating device
12/02/2004US20040240108 Return pole of a transducer having low thermal induced protrusion
12/02/2004US20040240107 Gapless longitudinal magnetic recording head with flux cavity
12/02/2004US20040240106 Thin film coil and method of forming the same, and thin film magnetic head and method of manufacturing the same
12/02/2004US20040240102 Magnetic disk apparatus
12/02/2004US20040240101 Disk apparatus and head positioning method
12/02/2004US20040240100 Disk drive control circuit and method
12/02/2004US20040240099 Method of manufacturing an apparatus and a method for estimating the flyheight of an airbearing slider in a storage device
12/02/2004US20040240098 Falling sensor and the information processing device making use of it
12/02/2004US20040240096 System and method for pre-stressing a read head for improving performance thereof
12/02/2004US20040240095 Apparatus and method for controlling inhibition of data writing in disk drive
12/02/2004US20040240094 Magnetic transfer apparatus
12/02/2004US20040239728 Fluid ejecting actuator for multiple nozzles of a printhead
12/02/2004US20040239343 Magnetic head smear detecting method and device
12/02/2004US20040239321 Thin film magnetic sensor and method of manufacturing the same
12/02/2004US20040239320 Thin film magnetic sensor and method of manufacturing the same
12/02/2004US20040239315 Testing apparatus and a testing method
12/02/2004US20040238113 Precision attachment of printed circuit board to magnetic disk head; differentiating movement trajectory of suction heads along longitudinal direction without interfering with stepped portion
12/02/2004US20040238002 Method of producing a glass substrate for a magnetic disk and method of producing a magnetic disk
12/02/2004US20040237289 System and method for a three-piece design of a magnetic head assembly
12/02/2004US20040237288 Apparatus and method for protecting a magnetic head coil during pole notch processing
12/02/2004CA2526462A1 Method for making a nano-particulate medium
12/01/2004EP1482504A1 Method for tracking control
12/01/2004EP1482503A2 Disk apparatus and head positioning method
12/01/2004EP1482498A2 Copy protection of optical media
12/01/2004EP1482485A1 Magnetic transfer device having separation means for the media being involved
12/01/2004EP1482484A2 Magnetic head lifting and lowering device
12/01/2004EP1482319A2 Thin film magnetic sensor and method of manufacturing the same
12/01/2004EP1481576A1 Liquid crystal polymers for flexible circuits