CPC Subgroup
B65D 33/16 End- or aperture-closing arrangements or devices (valves of valve bags ; closures of filled bags B65D77/10)
Full Title
Details of, or accessories for, sacks or bags > End- or aperture-closing arrangements or devices (valves of valve bags ; closures of filled bags B65D77/10)
13 direct subcodes
Child Classifications
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- B65D 33/18 using adhesive applied to integral parts, e.g. to flaps
- B65D 33/24 using self-locking integral or attached closure elements, e.g. flaps (B65D33/25 takes precedence)
- B65D 33/25 Riveting; Dovetailing; Screwing; using press buttons or slide fasteners
- B65D 33/26 using staples or stitches
- B65D 33/28 Strings or strip-like closures
- B65D 33/30 Deformable or resilient metal or like strips or bands
- B65D 33/32 Metallic chain closures
- B65D 33/34 with special means for indicating unauthorised opening
Top Applicants
Top 10 applicants by patent filingsfor class B65, 2013–2023, worldwide · Source: EPO PATSTAT
- P&G (PROCTER & GAMBLE COMPANY) US 3,369
- KRONES DE 3,304
- TETRA LAVAL HOLDINGS & FINANCE CH 2,227
- CANON JP 2,051
- AUTOSTORE TECHNOLOGY NO 1,731
- GPI (GRAPHIC PACKAGING INTERNATIONAL) US 1,707
- CANON 1,693
- G.D IT 1,678
- MURATA MACHINERY JP 1,664
- DAIFUKU COMPANY JP 1,654