DIFF Subgroup
B05B 11/02 Membranes or pistons acting on the contents inside the container, e.g. follower pistons
Introduced: July 1974
Full Title
Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use > characterised by the means producing the flow > Membranes or pistons acting on the contents inside the container, e.g. follower pistons
Additional Content IPC
follower followers an element, e.g. piston, that is in contact with the material to be dispensed throughout the dispensing process.
Of 3 combined children, 0 exist in both systems.
3 codes are CPC-only extensions.
Child Classifications
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Top Applicants
Top Applicants (IPC)
Class B05,2013–2023, worldwide · Source: EPO PATSTAT
- DUERR SYSTEMS DE 1,073
- 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 941
- TOKYO ELECTRON JP 825
- YOSHINO KOGYOSHO COMPANY 780
- APTAR FRANCE FR 723
- NORDSON CORPORATION US 704
- LG ENERGY SOLUTION KR 606
- GRACO MINNESOTA US 604
- SCREEN HOLDINGS JP 592
- BOEING COMPANY US 516
Top Applicants (CPC)
Class B05,2013–2023, worldwide · Source: EPO PATSTAT
- 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 1,265
- DUERR SYSTEMS DE 1,191
- TOKYO ELECTRON JP 1,157
- BASF COATINGS (BADISCHE ANILIN & SODA FABRIK COATINGS) DE 972
- APTAR FRANCE FR 848
- PPG INDUSTRIES OHIO US 838
- P&G (PROCTER & GAMBLE COMPANY) US 763
- NORDSON CORPORATION US 761
- LG CHEM KR 695
- GRACO MINNESOTA US 691