US PATENT SUBCLASS 148 / 103
.~.~.~ Treatment in a magnetic field

Current as of: June, 1999
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148 /   HD   METAL TREATMENT

95  DF  PROCESS OF MODIFYING OR MAINTAINING INTERNAL PHYSICAL STRUCTURE (I.E., MICROSTRUCTURE) OR CHEMICAL PROPERTIES OF METAL, PROCESS OF REACTIVE COATING OF METAL AND PROCESS OF CHEMICAL-HEAT REMOVING (E.G., FLAME-CUTTING, ETC.) OR BURNING OF METAL {17}
100  DF  .~ Magnetic materials {7}
101  DF  .~.~ Permanent magnet {2}
103.~.~.~ Treatment in a magnetic field

DEFINITION

Classification: 148/103

(under subclass 101) Processes, including a significant treatment in a magnetic field.

(1) Note. The processes of this subclass include at least one step of magnetizing or other treatment in a magnetic field, e.g., making the material magnetically anisotropic.

SEE OR SEARCH THIS CLASS, SUBCLASS:

108, for methods of modifying the magnetic properties of a metal not capable of use as a permanent magnet, and not classifiable in subclasses 104 or 105, involving the significant application of a magnetic field to the work.

SEE OR SEARCH CLASS

335, Electricity: Magnetically Operated Switches, Magnets, and Electromagnets,

284, for devices for magnetizing or demagnetizing magnets or electromagnets. 361, Electricity: Electrical Systems and Devices,

267, for demagnetizing methods and apparatus.