IPC Subgroup
B29D 30/52 Unvulcanised treads, e.g. on used tyres; Retreading
Introduced: January 1985
Last revised: January 2006
Full Title
Producing pneumatic or solid tyres or parts thereof > Pneumatic tyres or parts thereof > Unvulcanised treads, e.g. on used tyres; Retreading
Classification Context
- Section:
- PERFORMING OPERATIONS; TRANSPORTING
- Class:
- WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- Subclass:
- PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
Related Keywords
RETREADINGmoulding or applying TREADS on used tyres; retreading
5 direct subcodes
Child Classifications
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- B29D 30/54 Retreading
- B29D 30/58 Applying bands of rubber treads, i.e. applying camel backs
- B29D 30/64 Tyre spreaders
- B29D 30/66 Moulding treads on to tyre casings, e.g. non-skid treads with spikes
- B29D 30/68 Cutting profiles into the treads of tyres
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