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DIFF Subgroup
B29C 41/02

for making articles of definite length, i.e. discrete articles

Introduced: January 1985

Full Title

Full titles differ between systems:

IPC:

Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor > for making articles of definite length, i.e. discrete articles

CPC:

Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor (with compacting pressure B29C43/00 ) > for making articles of definite length, i.e. discrete articles

Of 9 combined children, 8 exist in both systems.

1 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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  • B29C 41/025 CPC only CPC only
  • B29C 41/12 Spreading-out the material on a substrate since 1985 IPC+CPC Available in IPC and CPC
  • B29C 41/14 Dipping a core since 1985 IPC+CPC Available in IPC and CPC
  • B29C 41/16 Slip casting, i.e. applying a slip or slurry on a perforated or porous or absorbent surface with the liquid being drained away since 1985 IPC+CPC Available in IPC and CPC
  • B29C 41/18 Slush casting, i.e. pouring moulding material into a hollow mould with excess material being poured off since 1985 IPC+CPC Available in IPC and CPC
  • B29C 41/20 incorporating preformed parts or layers, e.g. moulding inserts or for coating articles since 1985 IPC+CPC Available in IPC and CPC
  • B29C 41/22 Making multilayered or multicoloured articles since 1985 IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class B29,2013–2023, worldwide · Source: EPO PATSTAT

  1. HEWLETT-PACKARD DEVELOPMENT COMPANY US 3,802
  2. BOEING COMPANY US 3,087
  3. COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN FR 2,315
  4. SUMITOMO RUBBER IND 1,784
  5. GE (GENERAL ELECTRIC COMPANY) US 1,663
  6. CANON 1,658
  7. 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 1,587
  8. TORAY INDUSTRIES JP 1,555
  9. BASF (BADISCHE ANILIN & SODA FABRIK) DE 1,470
  10. LG CHEM KR 1,415

Top Applicants (CPC)

Class B29,2013–2023, worldwide · Source: EPO PATSTAT

  1. HEWLETT-PACKARD DEVELOPMENT COMPANY US 4,167
  2. BOEING COMPANY US 3,701
  3. COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN FR 2,554
  4. 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 2,240
  5. TORAY INDUSTRIES JP 2,133
  6. GE (GENERAL ELECTRIC COMPANY) US 2,069
  7. BASF (BADISCHE ANILIN & SODA FABRIK) DE 2,028
  8. LG CHEM KR 1,962
  9. DOW GLOBAL TECHNOLOGIES US 1,896
  10. CONTINENTAL REIFEN DE 1,725