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

CPC
COOPERATIVE PATENT CLASSIFICATION
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MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
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Preparation of tobacco on the plantation (harvesters for tobacco A01D 45/16)
A24B 1/02
.
Arrangements in barns for preparatory treatment of the tobacco, e.g. with devices for drying
A24B 1/04
.
Sifting, sorting, cleaning or removing impurities from tobacco (purifying by sifting or sorting in general B07B)
A24B 1/06
.
Stringing tobacco leaves
A24B 1/08
.
Suspending devices for tobacco leaves
A24B 1/10
.
Packing or pressing tobacco
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Preparing tobacco in the factory
A24B 3/02
.
Humidifying packed raw tobacco (containers for packaging contents in moist condition B65D 81/22)
A24B 3/04
.
Humidifying or drying tobacco bunches or cut tobacco (A24B 3/12 takes precedence)
A24B 3/06
.
Loosening tobacco leaves or cut tobacco (A24B 3/07 takes precedence)
A24B 3/07
.
Cutting or removing tie leaves; Cutting-off stem butts
A24B 3/08
.
Blending tobacco
A24B 3/10
.
Roasting or cooling tobacco
A24B 3/12
.
Steaming, curing, or flavouring tobacco
A24B 3/14
.
Forming reconstituted tobacco products, e.g. wrapper materials, sheets, imitation leaves, rods, cakes; Forms of such products (delustering A24C 1/40; tobacco or cigarette paper D21H)
A24B 3/16
.
Classifying or aligning leaves
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A24B 3/18
.
Other treatment of leaves, e.g. puffing, crimpling, cleaning
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. .
{
Puffing
}
A24B 3/185
. . .
{
by impregnating with a liquid and subsequently freezing and evaporating this liquid
}
A24B 3/187
. . .
{
by electrical treatment
}
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Stripping tobacco; Treatment of stems or ribs
A24B 5/02
.
by plucking out the stem
A24B 5/04
.
by cutting out the stem
A24B 5/06
.
by stripping leaf-parts from the stem
A24B 5/08
.
by cutting-off, shaving off, pressing flat the thick parts of stems or ribs
A24B 5/10
.
by crushing the leaves with subsequent separating
A24B 5/12
.
Auxiliary devices for stripping
A24B 5/14
.
Flattening machines for leaves or stems
A24B 5/16
.
Other treatment of stems or ribs, e.g. bending, chopping, incising (humidifying A24B 3/04)
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Cutting tobacco (hand cutting tools B26B; slicing in general B26D 1/00, B26D 3/00)
A24B 7/02
.
by machines with reciprocating knives
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A24B 7/04
.
by machines with revolving knives
A24B 7/06
. .
with two co-operating sets of knife discs
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A24B 7/08
. .
with several knives which act one after the other
A24B 7/10
. . .
with cutter axes parallel to the feeding direction
A24B 7/12
. . .
with cutter axes transverse to the feeding direction
A24B 7/14
.
Feeding or regulating devices for tobacco-cutting apparatus
Control of the moisture content of tobacco products, e.g. cigars, cigarettes, pipe tobacco (
{
final drying of cigars A24C 1/383, of cigarettes A24C 5/603
}
; devices for use by the smoker for controlling the moisture content of tobacco products A24F 25/00)
Tobacco-twisting machines
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Tobacco for pipes, for cigars, e.g. cigar inserts, or for cigarettes; Chewing tobacco; Snuff (mechanical treatment A24B 3/00 to A24B 11/00; reconstituted tobacco products A24B 3/14; chemical features or treatment of tobacco A24B 15/00)
A24B 13/02
.
Flakes or shreds of tobacco
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Chemical features or treatment of tobacco; Tobacco substitutes (A24B 3/00 takes precedence)
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A24B 15/10
.
Chemical features of tobacco products or tobacco substitutes
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A24B 15/12
. .
of reconstituted tobacco
A24B 15/14
. . .
made of tobacco and a binding agent not derived from tobacco
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. .
of tobacco substitutes
. . .
{
comprising as heat source a carbon fuel or an oxydized or thermally degraded carbonaceous fuel, e.g. carbohydrates, cellulosic material
}
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A24B 15/18
.
Treatment of tobacco products or tobacco substitutes
. .
{
sterilization, preservation or biological decontamination
}
A24B 15/186
. .
{
by coating with a coating composition, encapsulation of tobacco particles (encapsulation of additives other than tobacco : A24B 15/283)
}
A24B 15/20
. .
Biochemical treatment
A24B 15/22
. .
by application of electric or wave energy or particle radiation
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A24B 15/24
. .
by extraction; Tobacco extracts
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A24B 15/241
. . .
{
Extraction of specific substances
}
A24B 15/243
. . . .
{
Nicotine
}
A24B 15/245
. . . .
{
Nitrosamines
}
A24B 15/246
. . . .
{
Polycyclic aromatic compounds
}
A24B 15/248
. . . .
{
Heavy metals
}
A24B 15/26
. . .
Use of organic solvents for extraction
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A24B 15/28
. .
by chemical substances
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A24B 15/281
. . .
{
the action of the chemical substances being delayed
}
A24B 15/282
. . . .
{
by indirect addition of the chemical substances, e.g. in the wrapper, in the case
}
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A24B 15/283
. . . .
{
by encapsulation of the chemical substances
}
NOTE
-
In groups A24B 15/30 to A24B 15/42, in the absence of an indication to the contrary, classification is made in the last appropriate place for a substance

A24B 15/284
. . . . .
{
the additive being bound to a host by chemical, electrical or like forces, e.g. use of precursors, inclusion complexes
}
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A24B 15/285
. . .
{
characterised by structural features, e.g. particle shape or size
}
A24B 15/286
. . . .
{
Nanoparticles
}
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. . .
{
by inorganic substances only
}
A24B 15/288
. . . .
{
Catalysts or catalytic material, e.g. included in the wrapping material
}
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A24B 15/30
. . .
by organic substances
{
(A24B 15/281 takes precedence)
}
A24B 15/301
. . . .
{
by aromatic compounds
}
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A24B 15/302
. . . .
{
by natural substances obtained from animals or plants
}
A24B 15/303
. . . . .
{
Plant extracts other than tobacco
}
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A24B 15/305
. . . .
{
of undetermined constitution characterised by their preparation
}
A24B 15/306
. . . . .
{
one reactant being an amino acid or a protein, e.g. Maillard`s reaction (A24B 15/307 takes precedence)
}
A24B 15/307
. . . . .
{
using micro-organisms or enzymes as catalysts
}
A24B 15/308
. . . .
{
vitamins
}
A24B 15/32
. . . .
by acylic compounds
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A24B 15/34
. . . .
containing a carbocyclic ring other than a six-membered aromatic ring
A24B 15/345
. . . . .
{
containing condensed rings
}
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A24B 15/36
. . . .
containing a heterocyclic ring
A24B 15/365
. . . . .
{
having nitrogen and sulfur as hetero atoms in the same ring
}
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A24B 15/38
. . . . .
having only nitrogen as hetero atom
A24B 15/385
. . . . . .
{
in a five-membered ring
}
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A24B 15/40
. . . . .
having only oxygen or sulfur as hetero atoms
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A24B 15/403
. . . . . .
{
having only oxygen as hetero atoms
}
A24B 15/406
. . . . . . .
{
in a five-membered ring
}
A24B 15/42
. . .
by organic and inorganic substances
{
(A24B 15/281 takes precedence)
}
This page is owned by Office of Patent Classification.
Last Modified: 10/10/2013