LAYERED PRODUCTS

Description

B32 encompasses the manufacture, treatment, and properties of composite materials formed by bonding or assembling multiple layers of different substances into integrated structures. This class covers laminated products, sandwich structures, coated substrates, and multi-ply materials where individual layers provide distinct functional properties (mechanical, thermal, electrical, or protective). Applications include decorative laminates, thermal insulation panels, reinforced composites, and industrial coatings on various base materials. The classification focuses on the structural and manufacturing aspects of layered constructions rather than the properties of individual component materials, which are covered in related material-specific classes.

Filing statistics

CPC B32 recorded 381,235 patent applications worldwide between 2013 and 2023, summed across its 1 subclasses. Annual filings declined from 28,950 in 2013 to 24,486 in 2023 (-15%), peaking at 43,790 applications in 2016. The most active applicants in class B32 are NITTO DENKO CORPORATION (5,666 applications), SAINT-GOBAIN GLASS (4,491 applications) and 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) (3,703 applications).

Source: EPO PATSTAT, worldwide filings