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Color Curly Brackets (indicating CPC extensions to IPC)

CPC
COOPERATIVE PATENT CLASSIFICATION
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CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS (surface treatment of metallic material involving at least one process provided for in class C23 and at least one process covered by this subclass, C23F 17/00)
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Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working (apparatus for mechanical working of metal B21, B23, B24)
C22F 1/002
.
{
by rapid cooling or quenching; cooling agents used therefor
}
C22F 1/004
.
{
Heat treatment in fluid bed
}
C22F 1/006
.
{
Resulting in heat recoverable alloys with a memory effect
}
C22F 1/008
.
{
Using a protective surface layer
}
C22F 1/02
.
in inert or controlled atmosphere or vacuum (adjusting the composition of the atmosphere C21D 1/76)
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of aluminium or alloys based thereon
C22F 1/043
. .
of alloys with silicon as the next major constituent
C22F 1/047
. .
of alloys with magnesium as the next major constituent
C22F 1/05
. .
of alloys of the Al-Si-Mg type, i.e. containing silicon and magnesium in approximately equal proportions
C22F 1/053
. .
of alloys with zinc as the next major constituent
C22F 1/057
. .
of alloys with copper as the next major constituent
.
of magnesium or alloys based thereon
.
of copper or alloys based thereon
.
of nickel or cobalt or alloys based thereon
.
of chromium or alloys based thereon
.
of lead or alloys based thereon
.
of noble metals or alloys based thereon
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of other metals or alloys based thereon
. .
{
of zinc or cadmium or alloys based thereon
}
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. .
high-melting or refractory metals or alloys based thereon
. . .
{
of titanium or alloys based thereon
}
. . .
{
of zirconium or alloys based thereon
}
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Changing the physical structure of non-ferrous metals or alloys by special physical methods, e.g. treatment with neutrons
C22F 3/02
.
by solidifying a melt controlled by supersonic waves or electric or magnetic fields
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Last Modified: 10/10/2013