1. CPC Sections
  2. CPC Section A
  3. CPC Class A24
  4. CPC Subclass A24B
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CPC
COOPERATIVE PATENT CLASSIFICATION
​
A24B
MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF [2018-08]
WARNING

  • In this subclass non-limiting references (in the sense of paragraph 39 of the Guide to the IPC) may still be displayed in the scheme.
A24B 1/00
Preparation of tobacco on the plantation [2021-02]
A24B 1/02
.
Arrangements in barns for preparatory treatment of the tobacco, e.g. with devices for drying [2013-01]
A24B 1/04
.
Sifting, sorting, cleaning or removing impurities from tobacco [2021-02]
A24B 1/06
.
Stringing tobacco leaves [2013-01]
A24B 1/08
.
Suspending devices for tobacco leaves [2013-01]
A24B 1/10
.
Packing or pressing tobacco [2013-01]
A24B 3/00
Preparing tobacco in the factory [2013-01]
A24B 3/02
.
Humidifying packed raw tobacco [2021-02]
A24B 3/04
.
Humidifying or drying tobacco bunches or cut tobacco (A24B 3/12 takes precedence) [2013-01]
A24B 3/06
.
Loosening tobacco leaves or cut tobacco (A24B 3/07 takes precedence) [2013-01]
A24B 3/07
.
Cutting or removing tie leaves; Cutting-off stem butts [2013-01]
A24B 3/08
.
Blending tobacco [2013-01]
A24B 3/10
.
Roasting or cooling tobacco [2013-01]
A24B 3/12
.
Steaming, curing, or flavouring tobacco [2013-01]
A24B 3/14
.
Forming reconstituted tobacco products, e.g. wrapper materials, sheets, imitation leaves, rods, cakes; Forms of such products (delustering A24C 1/40) [2022-01]
A24B 3/16
.
Classifying or aligning leaves [2013-01]
A24B 3/18
.
Other treatment of leaves, e.g. puffing, crimpling, cleaning [2013-01]
A24B 3/182
. .
{Puffing} [2013-01]
A24B 3/185
. . .
{by impregnating with a liquid and subsequently freezing and evaporating this liquid} [2013-01]
A24B 3/187
. . .
{by electrical treatment} [2013-01]
A24B 5/00
Stripping tobacco; Treatment of stems or ribs [2013-01]
A24B 5/02
.
by plucking out the stem [2013-01]
A24B 5/04
.
by cutting out the stem [2013-01]
A24B 5/06
.
by stripping leaf-parts from the stem [2013-01]
A24B 5/08
.
by cutting-off, shaving off, pressing flat the thick parts of stems or ribs [2013-01]
A24B 5/10
.
by crushing the leaves with subsequent separating [2013-01]
A24B 5/12
.
Auxiliary devices for stripping [2013-01]
A24B 5/14
.
Flattening machines for leaves or stems [2013-01]
A24B 5/16
.
Other treatment of stems or ribs, e.g. bending, chopping, incising (humidifying A24B 3/04) [2013-01]
A24B 7/00
Cutting tobacco [2021-02]
A24B 7/02
.
by machines with reciprocating knives [2013-01]
A24B 7/04
.
by machines with revolving knives [2013-01]
A24B 7/06
. .
with two co-operating sets of knife discs [2013-01]
A24B 7/08
. .
with several knives which act one after the other [2013-01]
A24B 7/10
. . .
with cutter axes parallel to the feeding direction [2013-01]
A24B 7/12
. . .
with cutter axes transverse to the feeding direction [2013-01]
A24B 7/14
.
Feeding or control devices for tobacco-cutting apparatus [2017-02]
A24B 9/00
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) [2013-01]
A24B 11/00
Tobacco-twisting machines [2013-01]
A24B 13/00
Tobacco for pipes, for cigars, e.g. cigar inserts, or for cigarettes; Chewing tobacco; Snuff (reconstituted tobacco products A24B 3/14) [2021-02]
A24B 13/02
.
Flakes or shreds of tobacco [2013-01]
​
A24B 15/00
Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form (A24B 3/00 takes precedence) [2020-01]
NOTE

  • In groups A24B 15/30 - A24B 15/42, the last place priority rule is applied, i.e. at each hierarchical level, in the absence of an indication to the contrary, classification is made in the last appropriate place for a substance.{This Note corresponds to IPC Note (1) relating to A24B 15/30 - A24B 15/42.}
A24B 15/10
.
Chemical features of tobacco products or tobacco substitutes [2013-01]
A24B 15/12
. .
of reconstituted tobacco [2013-01]
A24B 15/14
. . .
made of tobacco and a binding agent not derived from tobacco [2013-01]
A24B 15/16
. .
of tobacco substitutes [2019-05]
A24B 15/165
. . .
{comprising as heat source a carbon fuel or an oxidized or thermally degraded carbonaceous fuel, e.g. carbohydrates, cellulosic material} [2018-01]
A24B 15/167
. . .
in liquid or vaporisable form, e.g. liquid compositions for electronic cigarettes [2020-01]
A24B 15/18
.
Treatment of tobacco products or tobacco substitutes [2013-01]
A24B 15/183
. .
{sterilization, preservation or biological decontamination} [2013-01]
A24B 15/186
. .
{by coating with a coating composition, encapsulation of tobacco particles (encapsulation of additives other than tobacco : A24B 15/283)} [2013-01]
A24B 15/20
. .
Biochemical treatment [2013-01]
A24B 15/22
. .
by application of electric or wave energy or particle radiation [2013-01]
A24B 15/24
. .
by extraction; Tobacco extracts [2013-01]
A24B 15/241
. . .
{Extraction of specific substances} [2013-01]
A24B 15/243
. . . .
{Nicotine} [2013-01]
A24B 15/245
. . . .
{Nitrosamines} [2013-01]
A24B 15/246
. . . .
{Polycyclic aromatic compounds} [2013-01]
A24B 15/248
. . . .
{Heavy metals} [2013-01]
A24B 15/26
. . .
Use of organic solvents for extraction [2013-01]
​
A24B 15/28
. .
by chemical substances [2021-01]
NOTE

  • In groups A24B 15/30 - A24B 15/42, the last place priority rule is applied, i.e. at each hierarchical level, in the absence of an indication to the contrary, classification is made in the last appropriate place for a substance.
    {This Note corresponds to IPC Note (1) relating to A24B 15/30 - A24B 15/42.}
A24B 15/281
. . .
{the action of the chemical substances being delayed} [2013-01]
A24B 15/282
. . . .
{by indirect addition of the chemical substances, e.g. in the wrapper, in the case} [2013-01]
A24B 15/283
. . . .
{by encapsulation of the chemical substances} [2018-08]
A24B 15/284
. . . . .
{the additive being bound to a host by chemical, electrical or like forces, e.g. use of precursors, inclusion complexes} [2013-01]
A24B 15/285
. . .
{characterised by structural features, e.g. particle shape or size} [2013-01]
A24B 15/286
. . . .
{Nanoparticles} [2013-01]
A24B 15/287
. . .
{by inorganic substances only} [2013-01]
A24B 15/288
. . . .
{Catalysts or catalytic material, e.g. included in the wrapping material} [2013-01]
A24B 15/30
. . .
by organic substances {(A24B 15/281 takes precedence)} [2013-01]
A24B 15/301
. . . .
{by aromatic compounds} [2013-01]
A24B 15/302
. . . .
{by natural substances obtained from animals or plants} [2013-01]
A24B 15/303
. . . . .
{Plant extracts other than tobacco} [2013-01]
A24B 15/305
. . . .
{of undetermined constitution characterised by their preparation} [2013-01]
A24B 15/306
. . . . .
{one reactant being an amino acid or a protein, e.g. Maillard's reaction (A24B 15/307 takes precedence)} [2013-01]
A24B 15/307
. . . . .
{using microorganisms or enzymes as catalysts} [2017-08]
A24B 15/308
. . . .
{vitamins} [2013-01]
A24B 15/32
. . . .
by acyclic compounds [2017-08]
A24B 15/34
. . . .
containing a carbocyclic ring other than a six-membered aromatic ring [2013-01]
A24B 15/345
. . . . .
{containing condensed rings} [2013-01]
A24B 15/36
. . . .
containing a heterocyclic ring [2013-01]
A24B 15/365
. . . . .
{having nitrogen and sulfur as hetero atoms in the same ring} [2013-01]
A24B 15/38
. . . . .
having only nitrogen as hetero atom [2013-01]
A24B 15/385
. . . . . .
{in a five-membered ring} [2013-01]
A24B 15/40
. . . . .
having only oxygen or sulfur as hetero atoms [2013-01]
A24B 15/403
. . . . . .
{having only oxygen as hetero atoms} [2013-01]
A24B 15/406
. . . . . . .
{in a five-membered ring} [2013-01]
A24B 15/42
. . .
by organic and inorganic substances {(A24B 15/281 takes precedence)} [2013-01]