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Outline
Indent Level
Color Curly Brackets (indicating CPC extensions to IPC)

CPC
COOPERATIVE PATENT CLASSIFICATION
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INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
NOTE
-
This subclass constitutes an internal scheme for indexing only.

The indexing scheme is used to identify structural and physical aspects of solid inorganic compounds, already classified in class C01 or subclass C09C.


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Crystal-structural characteristics
.
depicted by a TEM-image
.
Amorphous compounds
C01P 2002/04
.
Compounds with a limited amount of crystallinty, e.g. as indicated by a crystallinity index
C01P 2002/08
.
Intercalated structures, i.e. with atoms or molecules intercalated in their structure
.
One-dimensional structures
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.
Two-dimensional structures
. .
layered hydroxide-type, e.g. of the hydrotalcite-type
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.
Three-dimensional structures
. .
spinel-type (AB2O4)
. .
perovskite-type (ABO3)
C01P 2002/36
. .
pyrochlore-type (A2B2O7)
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.
Solid solutions
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. .
containing elements as dopants
C01P 2002/54
. . .
one element only
.
Compounds characterised by their crystallite size
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C01P 2002/70
.
defined by measured X-ray, neutron or electron diffraction data
. .
by d-values or two theta-values, e.g. as X-ray diagram
. .
by peak-intensities or a ratio thereof only
. .
by a space-group or by other symmetry indications
. .
by unit-cell parameters, atom positions or structure diagrams
. .
by stacking-plane distances or stacking sequences
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C01P 2002/80
.
defined by measured data other than those specified in group C01P 2002/70
. .
by IR- or Raman-data
. .
by UV- or VIS- data
. .
by XPS, EDX or EDAX data
. .
by NMR- or ESR-data
. .
by chromatography data, e.g. HPLC, gas chromatography
. .
by thermal analysis data, e.g. TGA, DTA, DSC
C01P 2002/89
. .
by mass-spectroscopy
C01P 2002/90
.
Other crystal-structural characteristics not specified above
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Particle morphology
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C01P 2004/01
.
depicted by an image
C01P 2004/02
. .
obtained by optical microscopy
. .
obtained by SEM
. .
obtained by TEM, STEM, STM or AFM
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.
extending in one dimension, e.g. needle-like
. .
with a prismatic shape
. .
with a cylindrical shape
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. .
Nanotubes
C01P 2004/133
. . .
Multiwall nanotubes
C01P 2004/136
. . .
Nanoscrolls, i.e. tubes having a spiral section
. .
Nanowires or nanorods, i.e. solid nano-fibres with two nearly equal dimensions between 1-100 nanometer
. .
Nanostrips, nanoribbons or nanobelts, i.e. solid nano-fibres with two significantly differing dimensions between 1-100 nanometer
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.
extending in two dimensions, e.g. plate-like
C01P 2004/22
. .
with a polygonal circumferential shape
. .
Nanoplates, i.e. plate-like particles with a thickness from 1-100 nanometer
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.
extending in three dimensions
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C01P 2004/32
. .
Spheres
C01P 2004/34
. . .
hollow
C01P 2004/36
. . .
fragmented
C01P 2004/38
. .
cube-like
C01P 2004/39
. .
parallelepiped-like
C01P 2004/40
. .
prism-like
C01P 2004/41
. .
octahedron-like
C01P 2004/42
. .
(bi)pyramid-like
. .
Aggregated particles or particles with an intergrown morphology
.
Agglomerated particles
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.
Particles with a specific particle size distribution
. .
highly monodisperse size distribution
C01P 2004/53
. .
bimodal size distribution
.
Particles characterised by their aspect ratio, i.e. the ratio of sizes in the longest to the shortest dimension
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.
Particles characterised by their size
C01P 2004/61
. .
Micrometer sized, i.e. from 1-100 micrometer
C01P 2004/62
. .
Submicrometer sized, i.e. from 0.1-1 micrometer
. .
Nanometer sized, i.e. from 1-100 nanometer
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C01P 2004/80
.
Particles consisting of a mixture of two or more inorganic phases
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C01P 2004/82
. .
two phases having the same anion, e.g. both oxidic phases
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C01P 2004/84
. . .
one phase coated with the other
C01P 2004/86
. . . .
Thin layer coatings, i.e. the coating thickness being less than 0.1 time the particle radius
C01P 2004/88
. . . .
Thick layer coatings
C01P 2004/90
.
Other morphology not specified above
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Physical properties of inorganic compounds
NOTE
-
Compounds having molecular sieve properties are classified in C01B 37/00, C01B 39/00.

The following codes are only to be used for physical values deviating significantly from the average usual values.

.
Solid density
.
Powder tap density
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.
Surface area
. .
thermal stability thereof at high temperatures
.
Pore volume
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C01P 2006/16
.
Pore diameter
C01P 2006/17
. .
Pore diameter distribution
.
Oil-absorption capacity, e.g. DBP values
C01P 2006/20
.
Powder free flowing behaviour
.
Attrition-index or crushing strength of granulates
.
Rheological behaviour as dispersion, e.g. viscosity, sedimentation stability
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.
Thermal properties
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C01P 2006/33
. .
Phase transition temperatures
C01P 2006/34
. . .
Melting temperatures
C01P 2006/35
. . .
Boiling temperatures
C01P 2006/36
. . .
Solid to solid transition temperatures
C01P 2006/37
. .
Stability against thermal decomposition
C01P 2006/40
.
Electric properties
C01P 2006/42
.
Magnetic properties
C01P 2006/44
.
Alpha, beta or gamma radiation related properties
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.
Optical properties, e.g. expressed in CIELAB-values
C01P 2006/62
. .
L* (lightness axis)
C01P 2006/63
. .
a* (red-green axis)
C01P 2006/64
. .
b* (yellow-blue axis)
C01P 2006/65
. .
Chroma (C*)
C01P 2006/66
. .
Hue (H*)
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.
Compositional purity
. .
water content
C01P 2006/88
.
Isotope composition differing from the natural occurence
C01P 2006/90
.
Other properties not specified above
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Last Modified: 10/10/2013