Means for plasticising or homogenising the moulding material or forcing it into the mould

Introduced: January 1985

Full Title

Full titles differ between systems:

IPC:

Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor > Component parts, details or accessories; Auxiliary operations > Means for plasticising or homogenising the moulding material or forcing it into the mould

CPC:

Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor (injection blow-moulding B29C49/06) > Component parts, details or accessories; Auxiliary operations > Means for plasticising or homogenising the moulding material or forcing it into the mould

CPC subdivides this area 2x more granularly than IPC with 7 additional codes.

7 codes are CPC-only extensions.

Note: 4 CPC extensions are marked as secondary classification only.

1 shared codes have differing titles between IPC and CPC.

Child Classifications

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B29C 2045/465 2nd only CPC only CPC only
B29C 2045/466 2nd only CPC only CPC only
B29C 2045/467 2nd only CPC only CPC only
B29C 2045/468 2nd only CPC only CPC only
B29C 45/461 CPC only CPC only
B29C 45/462 +1 CPC CPC only CPC only
B29C 45/464 CPC only CPC only
B29C 45/47 using screws (B29C45/54 takes precedence) since 1985 IPC+CPC Available in IPC and CPC
B29C 45/53 using injection ram or piston since 1985 +6 CPC IPC+CPC Available in IPC and CPC
B29C 45/56 using mould parts movable during or after injection, e.g. injection-compression moulding since 1985 +6 CPC IPC+CPC Available in IPC and CPC
B29C 45/57 Exerting after-pressure on the moulding material since 1985 +1 CPC IPC+CPC Available in IPC and CPC
B29C 45/58 Details since 1985 +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