B29C 48/25 Component parts, details or accessories; Auxiliary operations
Introduced: January 2019
Full Title
Full titles differ between systems:
Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor > Component parts, details or accessories; Auxiliary operations
Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor (extrusion blow-moulding B29C49/04) > Component parts, details or accessories; Auxiliary operations
Of 22 combined children, 14 exist in both systems.
8 codes are CPC-only extensions.
2 shared codes have differing titles between IPC and CPC.
IPC defines codes here since 2019.
Child Classifications
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- B29C 48/255 Flow control means, e.g. valves (flow dividers B29C48/695) since 2019 +3 CPC IPC+CPC Available in IPC and CPC
- B29C 48/265 Support structures or bases for apparatus, e.g. frames since 2019 IPC+CPC Available in IPC and CPC
- B29C 48/27 Cleaning; Purging; Avoiding contamination since 2019 +5 CPC IPC+CPC Available in IPC and CPC
- B29C 48/275 Recovery or reuse of energy or materials since 2019 +2 CPC IPC+CPC Available in IPC and CPC
- B29C 48/28 Storing of extruded material, e.g. by winding up or stacking since 2019 IPC+CPC Available in IPC and CPC
- B29C 48/285 Feeding the extrusion material to the extruder since 2019 +5 CPC IPC+CPC Available in IPC and CPC
- B29C 48/30 Extrusion nozzles or dies (extrusion characterised by the shape or cross-section of the extruded article B29C48/03) since 2019 +5 CPC IPC+CPC Available in IPC and CPC
- B29C 48/36 Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die since 2019 +3 CPC IPC+CPC Available in IPC and CPC
- B29C 48/78 Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling since 2019 IPC+CPC Available in IPC and CPC
- B29C 48/88 Thermal treatment of the stream of extruded material, e.g. cooling since 2019 +3 CPC IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class B29,2013–2023, worldwide · Source: EPO PATSTAT
- HEWLETT-PACKARD DEVELOPMENT COMPANY US 3,802
- BOEING COMPANY US 3,087
- COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN FR 2,315
- SUMITOMO RUBBER IND 1,784
- GE (GENERAL ELECTRIC COMPANY) US 1,663
- CANON 1,658
- 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 1,587
- TORAY INDUSTRIES JP 1,555
- BASF (BADISCHE ANILIN & SODA FABRIK) DE 1,470
- LG CHEM KR 1,415
Top Applicants (CPC)
Class B29,2013–2023, worldwide · Source: EPO PATSTAT
- HEWLETT-PACKARD DEVELOPMENT COMPANY US 4,167
- BOEING COMPANY US 3,701
- COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN FR 2,554
- 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 2,240
- TORAY INDUSTRIES JP 2,133
- GE (GENERAL ELECTRIC COMPANY) US 2,069
- BASF (BADISCHE ANILIN & SODA FABRIK) DE 2,028
- LG CHEM KR 1,962
- DOW GLOBAL TECHNOLOGIES US 1,896
- CONTINENTAL REIFEN DE 1,725