B29L INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
Description
B29L is an indexing scheme that organizes patent documents in subclass B29 according to the specific end-products or articles made from plastics or plastic-state materials. Rather than classifying by processing method, B29L directs users to relevant prior art based on the final article type being manufactured—such as containers, films, pipes, or automotive components. This scheme functions as a navigational tool to help patent professionals locate existing patents related to particular plastic articles across the broader B29 processing technology classifications. It complements method-based classifications by providing product-focused access points within plastic working technologies.
19 direct subcodes
Child Classifications
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- B29L 2001/00 Articles provided with screw threads
- B29L 2005/00 Elements of slide fasteners
- B29L 2007/00 Flat articles, e.g. films or sheets (B29L2024/00 takes precedence)
- B29L 2009/00 Layered products
- B29L 2011/00 Optical elements, e.g. lenses, prisms
- B29L 2012/00 Frames
- B29L 2015/00 Gear wheels or similar articles with grooves or projections, e.g. control knobs
- B29L 2016/00 Articles with corrugations or pleats (B29L2023/18, take precedence)
- B29L 2019/00 Buttons or semi-finished parts of buttons
- B29L 2021/00 Hair combs or similar toothed or slotted articles
- B29L 2022/00 Hollow articles (tubular articles B29L2023/00; pneumatic tyres B29L2030/00)
- B29L 2023/00 Tubular articles (B29L2024/00 takes precedence )
- B29L 2024/00 Articles with hollow walls
- B29L 2025/00 Frameless domes
- B29L 2028/00 Nets or the like
- B29L 2029/00 Belts or bands
- B29L 2030/00 Pneumatic or solid tyres or parts thereof
- B29L 2031/00 Other particular articles