Component parts, details or accessories; Auxiliary operations

Introduced: January 1985

Full Title

Full titles differ between systems:

IPC:

Mixing; Kneading > continuous, with mechanical mixing or kneading devices > Component parts, details or accessories; Auxiliary operations

CPC:

Mixing; Kneading ( in general B01F; combined with calendering B29C43/24, with injection B29C45/46, with extrusion B29C48/36) > continuous, with mechanical mixing or kneading devices > Component parts, details or accessories; Auxiliary operations

Of 9 combined children, 7 exist in both systems.

2 codes are CPC-only extensions.

1 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1985.

Child Classifications

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B29B 7/582 CPC only CPC only
B29B 7/584 +2 CPC CPC only CPC only
B29B 7/60 for feeding, e.g. end guides for the incoming material since 1985 +2 CPC IPC+CPC Available in IPC and CPC
B29B 7/62 Rollers, e.g. with grooves (B29B7/564 takes precedence) since 1985 +1 CPC IPC+CPC Available in IPC and CPC
B29B 7/64 Stripping the material from the rollers since 1985 +1 CPC IPC+CPC Available in IPC and CPC
B29B 7/66 Recycling the material since 1985 IPC+CPC Available in IPC and CPC
B29B 7/68 Positioning of rollers since 1985 IPC+CPC Available in IPC and CPC
B29B 7/70 Conditioning of rollers, e.g. cleaning since 1985 IPC+CPC Available in IPC and CPC
B29B 7/72 Measuring, controlling or regulating since 1985 +4 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