CPC Subgroup
D21H 19/72 Coated paper characterised by the paper substrate
Full Title
Coated paper (coated fibreboard D21J1/08); Coating material (recording sheets characterised by the coating used to improve ink, dye or pigment receptivity B41M5/50) > Coated paper characterised by the paper substrate
2 direct subcodes
Child Classifications
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- D21H 19/74 the substrate having an uneven surface, e.g. crêped or corrugated paper
- D21H 19/76 the substrate having specific absorbent properties
Top Applicants
Top 10 applicants by patent filingsfor 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