CPC Subgroup
B31B 70/81 Forming or attaching accessories, e.g. opening devices, closures or tear strings
Full Title
Making flexible containers, e.g. envelopes or bags > Auxiliary operations > Forming or attaching accessories, e.g. opening devices, closures or tear strings
4 direct subcodes
Child Classifications
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- B31B 70/82 Forming or attaching windows
- B31B 70/84 Forming or attaching means for filling or dispensing contents, e.g. valves or spouts
Top Applicants
Top 10 applicants by patent filingsfor class B31, 2013–2023, worldwide · Source: EPO PATSTAT
- GPI (GRAPHIC PACKAGING INTERNATIONAL) US 496
- P&G (PROCTER & GAMBLE COMPANY) US 403
- KIMBERLY-CLARK CORPORATION US 332
- RANPAK CORPORATION US 279
- PULPAC SE 256
- BOBST MEX CH 251
- TETRA LAVAL HOLDINGS & FINANCE CH 246
- PREGIS INNOVATIVE PACKAGING US 210
- WESTROCK SHARED SERVICES US 204
- BHS CORRUGATED MASCHINEN- UND ANLAGENBAU DE 198