IPC Main Group
B29L 31/00 Other particular articles
Introduced: January 1985
Last revised: January 2006
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
27 direct subcodes
Child Classifications
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- B29L 31/04 Bearings
- B29L 31/06 Rods, e.g. connecting rods
- B29L 31/08 Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers
- B29L 31/1 Building elements, e.g. bricks, blocks, tiles, panels, posts, beams
- B29L 31/12 Chains
- B29L 31/14 Filters, sieves or screens
- B29L 31/16 Frictional elements, e.g. brake or clutch linings
- B29L 31/18 Heat-exchangers or parts thereof
- B29L 31/2 Fuel-blocks, e.g. nuclear fuel elements
- B29L 31/22 Hinges
- B29L 31/24 Pipe joints or couplings
- B29L 31/26 Sealing devices, e.g. packaging for pistons or pipe joints
- B29L 31/28 Tools, e.g. cutlery
- B29L 31/3 Vehicles, e.g. ships or aircraft, or body parts thereof
- B29L 31/32 Wheels, pinions, pulleys, castors or rollers
- B29L 31/34 Electrical apparatus, e.g. sparking plugs or parts thereof
- B29L 31/38 Loudspeaker cones; Acoustic diaphragms
- B29L 31/4 Test specimens
- B29L 31/42 Brushes
- B29L 31/44 Furniture or parts thereof
Top Applicants
Top 10 applicants by patent filingsfor 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