Coatings characterised by a special visual effect, e.g. patterned, textured (marbled paper D21H27/04)

Introduced: January 1990

Title

Titles differ between systems:

IPC: Coatings characterised by a special visual effect, e.g. patterned or textured

CPC: Coatings characterised by a special visual effect, e.g. patterned, textured (marbled paper D21H27/04)

Full Title

Full titles differ between systems:

IPC:

Coated paper; Coating material > Coatings characterised by a special visual effect, e.g. patterned or textured

CPC:

Coated paper (coated fibreboard D21J1/08); Coating material (recording sheets characterised by the coating used to improve ink, dye or pigment receptivity B41M5/50) > Coatings characterised by a special visual effect, e.g. patterned, textured (marbled paper D21H27/04)

IPC and CPC are identically structured here. All 2 subcodes exist in both systems.

1 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1990.

Child Classifications

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D21H 19/68 uneven, broken, discontinuous since 1990 IPC+CPC Available in IPC and CPC
D21H 19/70 with internal voids, e.g. bubble coatings since 1990 IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class D21,2013–2023, worldwide · Source: EPO PATSTAT

VOITH PATENT DE 1,809
STORA ENSO FI 1,467
KEMIRA FI 1,086
KIMBERLY-CLARK CORPORATION US 935
VALMET TECHNOLOGIES FI 924
VALMET SE 904
P&G (PROCTER & GAMBLE COMPANY) US 862
OJI HOLDINGS CORPORATION 696
OMYA INTERNATIONAL CH 584
SOUTH CHINA UNIVERSITY OF TECHNOLOGY 571

Top Applicants (CPC)

Class D21,2013–2023, worldwide · Source: EPO PATSTAT

VOITH PATENT DE 1,857
STORA ENSO FI 1,552
KEMIRA FI 1,173
KIMBERLY-CLARK CORPORATION US 1,107
VALMET TECHNOLOGIES FI 965
VALMET SE 943
P&G (PROCTER & GAMBLE COMPANY) US 941
OMYA INTERNATIONAL CH 821
UPM-KYMMENE CORPORATION FI 512
SEIKO EPSON CORPORATION JP 501