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Class Information
Number: 428/810
Name: Stock material or miscellaneous articles > Magnetic recording component or stock > Magnetic head
Description: Subject matter in which the laminate of one or more layers has a disclosed utility as a component in a magnetic head or transducer (i.e., layer or laminate intended to sense stored magnetic information or to magnetically record information on a media) and which has a specified chemical composition, microstructure, or a property resulting from or influenced by microstructure of a layer or layers.










Sub-classes under this class:

Class Number Class Name Patents
428/812 Magnetic layer composition 147
428/811 Magnetoresistive 70
428/813 Substrate composition 48
428/815 With defined laminate structural detail 97
428/816 With interlaminar component (e.g., adhesion layer, etc.) 76
428/814 With protective film 28


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8711662 Near-field transducers for focusing light Apr. 29, 2014
8621910 Wear gauge array for head protective coating Jan. 7, 2014
8563146 Method and system for providing a magnetic recording pole having a dual sidewall angle Oct. 22, 2013
8419952 Method of manufacturing magnetic recording medium and magnetic recording apparatus Apr. 16, 2013
8379429 Domain wall motion element and magnetic random access memory Feb. 19, 2013
8274811 Assisting FGL oscillations with perpendicular anisotropy for MAMR Sep. 25, 2012
8211322 Method of forming a metal layer pattern having a nanogap and method of manufacturing a molecule-sized device using the same Jul. 3, 2012
8185968 Magnetic head inspection method and magnetic head manufacturing method May. 22, 2012
8130475 Method for manufacturing CPP-type thin film magnetic head provided with a pair of magnetically free layers Mar. 6, 2012
8105703 Process for composite free layer in CPP GMR or TMR device Jan. 31, 2012
7951415 Method of manufacturing magnetic head for perpendicular magnetic recording May. 31, 2011
7943558 Lubricant with non-terminal functional groups May. 17, 2011
7923133 Coatings and methods for particle reduction Apr. 12, 2011
7910160 Thin-film magnetic head structure adapted to manufacture a thin-film head having a base magnetic pole part, a york magnetic pole part, and an intervening insulative film Mar. 22, 2011
7875373 Perpendicular magnetic recording medium and magnetic storage apparatus using the same Jan. 25, 2011
7869264 Information storage devices using magnetic domain wall movement and methods of operating the same Jan. 11, 2011
7837096 Banking machine apparatus controlled responsive to data bearing records Nov. 23, 2010
7708902 Magnetic material, and memory and sensor using same May. 4, 2010
7683012 Lubricant with non-terminal functional groups Mar. 23, 2010
7407902 Bismuth glass composition, and magnetic head and plasma display panel including the same as sealing member Aug. 5, 2008
7327540 Hard biased materials for recording head applications Feb. 5, 2008
7218487 Exchange coupling film and magnetoresistive element using the same May. 15, 2007
7150907 Modified copolyesters and improved multilayer reflective films Dec. 19, 2006
7106559 Exchange coupling film and magnetoresistive element using the same Sep. 12, 2006
7092222 Exchange coupled film having improved current-carrying reliability and improved rate of change in resistance and magnetic sensing element using same Aug. 15, 2006
7088548 Perpendicular magnetic recording system Aug. 8, 2006
7044837 Magnetic head cleaning method May. 16, 2006
6939123 Electroformed adhesive laminated tooling surface with precision structured interfaces Sep. 6, 2005
6902826 High moment films with sub-monolayer nanolaminations retaining magnetic anisotropy after hard axis annealing Jun. 7, 2005
6765755 Anti-abrasive reading head Jul. 20, 2004
6716537 Magnetoresistive element having multilayered film capable of effectively conducting a detecting current for detecting external magnetic field and method for making the same Apr. 6, 2004
6663939 Magnetic recording medium Dec. 16, 2003
6656604 Magnetoresistive thin-film magnetic element and method for making the same Dec. 2, 2003
6620530 Synthetic anti-parallel spin valve, having improved robustness, and process to manufacture it Sep. 16, 2003
6602571 Method for manufacturing magnetic encoders and magnetic encoders manufactured by using such method Aug. 5, 2003
6594124 Canted adjacent layer stabilized SV heads Jul. 15, 2003
6590389 Magnetic sensor, magnetic sensor apparatus, semiconductor magnetic resistance apparatus, and production method thereof Jul. 8, 2003
6583620 Plane magnetic sensor and plane magnetic sensor for multidimensional magnetic field analysis Jun. 24, 2003
6579665 Thin-film magnetic recording head manufacture Jun. 17, 2003
6579612 Magnetostrictive sensor structure Jun. 17, 2003
6544716 Multilayer optical medium for near-field optical recording and reading Apr. 8, 2003
6518862 Magnetostatic wave element and manufacturing method therefor Feb. 11, 2003
6462917 Magnetoresistive sensor, a thin film magnetic head, a magnetic head device, and a magnetic disk drive device Oct. 8, 2002
6447935 Method and system for reducing assymetry in a spin valve having a synthetic pinned layer Sep. 10, 2002
6395388 Magnetoresistance effect element May. 28, 2002
6391483 Magnetic device and method of forming same May. 21, 2002
6387549 Magnetic sensor May. 14, 2002
6376108 Magnetic material and magnetic head using the same and magnetic storage device having thereof Apr. 23, 2002
6368706 Magnetoresistance effect element Apr. 9, 2002
6346337 Bulk amorphous metal magnetic component Feb. 12, 2002

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