CPC Subgroup
D21H 15/06 Long fibres, i.e. fibres exceeding the upper length limit of conventional paper-making fibres; Filaments
Full Title
Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution > characterised by configuration > Long fibres, i.e. fibres exceeding the upper length limit of conventional paper-making fibres; Filaments
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