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IPC Subgroup
B29L 31/26

Sealing devices, e.g. packaging for pistons or pipe joints

Introduced: January 1985

Last revised: January 2006

Full Title

Other particular articles > Sealing devices, e.g. packaging for pistons or pipe joints

Classification Context

Section:
PERFORMING OPERATIONS; TRANSPORTING
Class:
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
Subclass:
INDEXING SCHEME ASSOCIATED WITH SUBCLASS , RELATING TO PARTICULAR ARTICLES

Filing statistics

IPC B29L 31/26 belongs to the parent subclass B29L, which recorded 133,081 patent applications worldwide between 2013 and 2023. Annual filings grew from 4,253 in 2013 to 16,480 in 2023 (+287%), peaking at 21,263 applications in 2020. The most active applicants in class B29 are HEWLETT-PACKARD DEVELOPMENT COMPANY (3,802 applications), BOEING COMPANY (3,087 applications) and COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN (2,315 applications).

Source: EPO PATSTAT, worldwide filings

Top Applicants

Top 10 applicants by patent filingsfor 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