United States Patent and Trademark Office

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

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	CPC	COOPERATIVE PATENT CLASSIFICATION

A21B

BAKERS` OVENS; MACHINES OR EQUIPMENT FOR BAKING (domestic baking equipment A47J 37/00; combustion apparatus F23; domestic stoves or ranges being wholly or partly ovens F24B, F24C)

A21B 1/00

Bakers` ovens

A21B 1/02

characterised by the heating arrangements

A21B 1/04

. .

Ovens heated by fire before baking only

A21B 1/06

. .

Ovens heated by radiators

A21B 1/08

. . .

by steam-heated radiators

A21B 1/10

. . .

by radiators heated by fluids other than steam

A21B 1/14

. . .

Arrangement of radiators

A21B 1/145

. . . .

{

Radiators consisting of tubes

}

A21B 1/22

. . .

by electric radiators (A21B 2/00 takes precedence; electric heating elements H05B)

A21B 1/24

. .

Ovens heated by media flowing therethrough

A21B 1/245

. . .

{

with a plurality of air nozzles to obtain an impingement effect on the food

}

A21B 1/26

. . .

by hot air

A21B 1/28

. . .

by gaseous combustion products

A21B 1/33

. .

Ovens heated directly by combustion products (A21B 1/04 takes precedence)

A21B 1/36

. .

Ovens heated directly by hot fluid (A21B 1/06, A21B 1/33 take precedence)

A21B 1/40

characterised by the means for regulating the temperature (temperature-sensitive elements G01K)

A21B 1/42

characterised by the baking surfaces moving during the baking (conveying in general B65G)

A21B 1/44

. .

with surfaces rotating in a horizontal plane

A21B 1/46

. .

with surfaces suspended from an endless conveyer or a revolving wheel

A21B 1/48

. .

with surfaces in the form of an endless band

A21B 1/50

characterised by having removable baking surfaces

A21B 1/52

Portable ovens; Collapsible ovens (travelling or camp cookers A47J 33/00)

A21B 2/00

Baking apparatus employing high-frequency or infra-red heating

A21B 3/00

Parts or accessories of ovens

A21B 3/003

{

Baker`s peels

}

A21B 3/006

{

Means for cleaning the baking cavity

}

WARNING

Group A21B 3/006 is not complete, pending reorganisation, see also A21B 3/00

A21B 3/02

Doors; Flap gates (general features of doors E06B)

A21B 3/04

Air-treatment devices for ovens, e.g. regulating humidity

A21B 3/07

Charging or discharging ovens (A21B 3/18 takes precedence)

A21B 3/10

Means for illuminating ovens

A21B 3/13

Baking-tins; Baking forms

A21B 3/131

. .

{

removable, foldable or disposable

}

A21B 3/132

. .

{

Assemblies of several baking-tins or forms (A21B 3/134 takes precedence)

}

A21B 3/133

. .

{

for making bread

}

A21B 3/134

. . .

{

Multiple bread pans

}

A21B 3/135

. .

{

Accessories, e.g. covers, handles

}

A21B 3/136

. .

{

with reinforcements

}

WARNING

Groups A21B 3/13R-A21B 3/139 are not complete, pending reorganisation, see also A21B 3/13

A21B 3/137

. .

{

with detachable side and bottom parts, e.g. springform

}

A21B 3/138

. .

{

flexible forms, e.g. made from silicone

}

A21B 3/139

. .

{

with apertures to vent steam

}

A21B 3/15

Baking sheets; Baking boards

A21B 3/155

. .

{

of wire or mesh wire material (A21B 3/131 takes precedence)

}

A21B 3/16

Machines for cleaning or greasing baking surfaces

A21B 3/18

Discharging baked goods from tins (unpacking in general B65B 69/00)

A21B 5/00

Baking apparatus for special goods; Other baking apparatus

A21B 5/02

Apparatus for baking hollow articles, waffles, pastry, biscuits, or the like

A21B 5/023

. .

{

Hinged moulds for baking waffles

}

A21B 5/026

. .

{

for baking waffle cups or cones

}

A21B 5/03

. .

for baking pancakes (frying pans A47J 37/10)

A21B 5/04

Apparatus for baking cylindrical cakes on spits

A21B 5/06

Apparatus for baking in salt solution, e.g. for making pretzels

A21B 5/08

Apparatus for baking in baking fat or oil, e.g. for making doughnuts

A21B 5/085

. .

{

for applying oil to bakery products

}

A21B 7/00

Baking plants

A21B 7/005

{

in combination with mixing or kneading devices

}