CPC Main Group
B29C 61/00 Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor (for surface shaping B29C59/18; for lining articles B29C63/38; for joining preformed parts B29C65/66 )
Filing statistics
CPC B29C 61/00 belongs to the parent subclass B29C, which recorded 482,920 patent applications worldwide between 2013 and 2023. Annual filings grew from 33,461 in 2013 to 35,822 in 2023 (+7%), peaking at 52,604 applications in 2018. The most active applicants in class B29 are HEWLETT-PACKARD DEVELOPMENT COMPANY (4,167 applications), BOEING COMPANY (3,701 applications) and COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN (2,554 applications).
Source: EPO PATSTAT, worldwide filings
5 direct subcodes
Child Classifications
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- B29C 61/02 Thermal shrinking
- B29C 61/04 Thermal expansion
- B29C 61/06 Making preforms having internal stresses, e.g. plastic memory
Top Applicants
Top 10 applicants by patent filingsfor 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