Patents
Patents for H01F 41 - Apparatus or processes specially adapted for manufacturing or assembling the devices covered by this subclass (27,155)
09/1983
09/13/1983US4403404 Method of making a cellulose-free transformer coils
09/13/1983US4403403 Method of making a fly back transformer
09/07/1983EP0087910A1 Ion-implanted magnetic bubble memory device
09/07/1983EP0087559A1 Thin-film permanent magnet
09/06/1983US4403002 Vacuum deposition of magnetic layers on moving flexible tape
08/1983
08/31/1983EP0087362A1 Method of making an electric transformer, transformer made in this way, and wheel for winding the same
08/23/1983US4400444 Vapor deposition of ferromagnetic layer in width direction
08/23/1983US4400226 Fluorinated ethylene propylene resin-coated polyimide tape
08/23/1983US4399950 Magazine for winding wire on endless annular members or cores
08/16/1983US4399013 Method of producing a magnetic recording medium
08/09/1983US4397912 Computers; small diameters; stability during temperature variationsa
08/03/1983EP0084568A1 Iron core laminate manufacturing apparatus
08/02/1983US4396441 Heating an iron-platinum alloy, homogenizing the solid solution and quenching
07/1983
07/26/1983US4395465 Magnetic recording medium and process for production thereof
07/26/1983US4395439 Method of manufacturing magnetic recording medium
07/19/1983US4393904 Method and device for winding stators or the like
07/13/1983EP0083567A1 Toroidal electrical transformer and method of producing same
07/12/1983CA1149852A1 Ferro-fluid bearing
07/12/1983CA1149709A1 Magneto-optic bi.sub.1 lu.sub.2 fe.sub.5 o in12 xx crystals
07/12/1983CA1149686A1 Metallic thin film magnetic recording medium
07/05/1983US4392070 Insulated coil assembly and method of making same
07/05/1983US4391849 Transducers
06/1983
06/29/1983EP0082238A1 Relay
06/29/1983EP0037816B1 A wire magazine for winding wire for use in a winding machine for the winding of elongate, preferably endless annular members or cores
06/28/1983US4390601 Vacuum evaporation of ferromagnetic material, lubricant, and macromolecular on support
06/28/1983US4390590 Power insertable polyamide-imide coated magnet wire
06/23/1983WO1983002194A1 Electric transformer and method for making it
06/21/1983CA1148655A1 Magnetic recording medium and process for production thereof
06/15/1983EP0081446A1 Method of and device for winding the inductive coils equipping electrical apparatuses such as transformers
06/14/1983US4388371 Partial heat curing initially
06/14/1983US4388367 Perpendicular magnetic recording medium and fabrication
06/14/1983US4388131 Method of fabricating magnets
06/14/1983US4388127 Method for wrapping three-dimensionally curved conductors
06/14/1983US4387866 Fluid motor driven propeller-aircraft for vertical take off and landing with a multipurpose pipe structure
06/14/1983US4387508 Apparatus for magnetically assembling fragile parts
06/14/1983US4387504 Machine for flats or conical windings in the form of a disc for electric motors
06/14/1983CA1148229A1 Inductive component and method for its production
06/08/1983EP0080974A1 Method for the construction of a coil for micro-motors, and coil having an external protection
06/07/1983US4387136 Magnetic recording medium and apparatus for preparing the same
06/01/1983EP0040197B1 A winding machine for winding elongate members or cores and an exchangeable cassette for the wire magazine for such a machine
05/1983
05/31/1983US4386114 Method of manufacturing a thin-film magnetic field sensor
05/31/1983US4386113 Vapor deposition of ferromagnetic layer from container of magnesium oxide
05/31/1983US4385877 Injection molding apparatus
05/31/1983CA1147408A1 Fly-back transformer
05/31/1983CA1147131A1 Machine for making flat or conical disk shaped windings for electric motors
05/24/1983US4385098 Magnetic recording media
05/17/1983US4384168 Conductor for a fluid-cooled winding
05/17/1983CA1146343A1 Apparatus for punching and winding of motor and transformer cores
05/11/1983EP0078368A2 Spin coating apparatus and method
05/10/1983US4383235 Bi level etched magnetic coil
05/03/1983US4382110 Ferromagnetic material such as cobalt or a cobalt alloy
05/03/1983US4381852 Automatic tensioning control for winding stator coils
05/03/1983US4381600 Magnetic core winding apparatus
04/1983
04/26/1983US4380919 Coil winding machine
04/26/1983CA1145120A1 Method for mounting a winding in a transformer
04/20/1983EP0076918A1 Amorphous magnetic core and process for manufacturing to improve efficiency
04/19/1983US4380558 Process for manufacturing a protective polysilicate layer of a record member by a laser beam and a magnetic record member suitably manufactured thereby
04/19/1983US4380211 Vacuum evaporation system for deposition of thin films
04/12/1983US4380000 Coil arrangement, particularly for relays, and method of making same
04/12/1983US4379527 Shuttle drive assembly
04/06/1983EP0076184A1 Process for obtaining a layer with plane homogeneous magnetization in a ferrimagnetic garnet
04/06/1983EP0076152A1 Method of producing a continuous thin film magnetic medium
04/06/1983EP0076142A1 Post treatment of perpendicular magnetic recording media
04/05/1983US4379276 Process and apparatus for the multipolar magnetization of a material in strips
04/05/1983US4379179 Method for determining the magnetic anisotropy field in the manufacture of magnetic domain devices
03/1983
03/29/1983US4378410 Appling aluminum-silicon dioxide glass to form dielectric layer
03/29/1983US4378385 Method of making oxygen ion conducting solid electrolyte device
03/29/1983US4377905 Method for manufacturing a Nb3 Sn superconductor and method for manufacturing hollow superconducting magnet
03/22/1983USRE31183 Terminal forming and installing apparatus
03/22/1983CA1143258A1 Method of forming a magneto-optical polycrystalline cobalt ferrite layer on a substrate
03/15/1983US4376904 Insulated electromagnetic coil
03/15/1983US4376726 Method of manufacturing composition for bonded magnets
03/15/1983US4376384 Clamp for use in winding large magnet coils
03/08/1983US4376137 Method of fabricating a bi-level magnetic bubble propagation circuit
03/02/1983EP0073041A2 Method and device for manufacturing magnetic recording medium
03/01/1983US4375390 Thin film techniques for fabricating narrow track ferrite heads
02/1983
02/23/1983EP0072716A1 Method of manufacturing an ignition coil for internal combustion engines
02/22/1983CA1141735A1 Shuttleless toroidal core winder
02/22/1983CA1141695A1 Magnetostrictive alloy thin film electroplating
02/15/1983US4374081 Cure of epoxy systems at reduced pressures
02/15/1983US4374009 Electrochemical post treatment of perpendicular magnetic recording media
02/15/1983CA1141464A1 Megneto optic memory layer
02/15/1983CA1141133A1 Method of curing phenolic resin in an electrical apparatus without degrading polyethyleneterephthalate insulation also in the electrical apparatus
02/08/1983US4372985 Magnetic bubbles
02/08/1983US4372808 Process for removing a liquid phase epitaxial layer from a wafer
02/08/1983US4372497 Method of manufacturing wound items from coaxial microwire and device therefor
02/08/1983US4372029 Apparatus for providing an electrical coil with leads
01/1983
01/26/1983EP0070765A1 Process for producing an inductor and pot core using the same
01/26/1983EP0070661A1 Insulated electromagnetic coil, method and product
01/26/1983EP0028244B1 Wire brake for a winding machine
01/25/1983US4370581 Multilayered coil structure
01/25/1983US4369567 Method of manufacturing a permanent magnet which is to be arranged in an air gap of a transformer core
01/25/1983US4369557 Process for fabricating resonant tag circuit constructions
01/20/1983WO1983000264A1 Field composite permanent magnet and method of producing the same
01/18/1983US4369209 Method of manufacturing a magnetic bubble memory element
01/18/1983US4369077 Drawing mild steel
01/11/1983US4368447 Rolled core
01/11/1983US4368407 Inductor-capacitor impedance devices and method of making the same
01/05/1983EP0068846A1 Forming a pattern of metal elements on a substrate
01/05/1983EP0068415A1 Method of winding electric coils on closed cores, particularly ring cores