CPC Subgroup
D21H 25/08 Rearranging applied substances, e.g. metering, smoothing; Removing excess material
Full Title
After-treatment of paper not provided for in groups D21H17/00 - D21H23/00 > Rearranging applied substances, e.g. metering, smoothing; Removing excess material
3 direct subcodes
Child Classifications
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- D21H 25/10 with blades
- D21H 25/12 with an essentially cylindrical body, e.g. roll or rod
- D21H 25/16 with a blast of vapour or gas, e.g. air knife
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