Top IPC subclasses
|
1
|
D21H
|
9
|
pulp compositionspreparation thereof not covered by subclasses , impregnating or coating of papertre
|
|
2
|
H01L
|
3
|
Semiconductor devices; electric solid state devices not otherwise provided for
|
|
3
|
B41M
|
2
|
printing, duplicating, marking, or copying processescolour printing
|
|
4
|
A47B
|
2
|
tablesdesksoffice furniturecabinetsdrawersgeneral details of furniture
|
|
5
|
B44F
|
1
|
special designs or pictures
|
|
6
|
D21F
|
1
|
paper-making machinesmethods of producing paper thereon
|
|
7
|
G06K
|
1
|
Recognition of data; presentation of data; record carriers; handling record carriers
|
|
8
|
E06B
|
1
|
fixed or movable closures for openings in buildings, vehicles, fences, or like enclosures, in genera
|
|
9
|
B42D
|
1
|
booksbook coversloose leavesprinted matter of special format or style not otherwise provided fordevi
|