Layered products characterised by the non-homogeneity or physical structure of a layer

Introduced: September 1968

Last revised: January 2006

Classification Context

Section:: PERFORMING OPERATIONS; TRANSPORTING
Class:: LAYERED PRODUCTS
Subclass:: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM

Filing statistics

IPC B32B 5/00 belongs to the parent subclass B32B, which recorded 496,494 patent applications worldwide between 2013 and 2023. Annual filings grew from 37,194 in 2013 to 37,603 in 2023 (+1%), peaking at 55,086 applications in 2020. The most active applicants in class B32 are NITTO DENKO CORPORATION (4,719 applications), DNP (DAINIPPON PRINTING COMPANY) (3,989 applications) and SAINT-GOBAIN GLASS (3,695 applications).

Source: EPO PATSTAT, worldwide filings

Related Keywords

layered products with a layer of CELLULAR structure

5 direct subcodes

Child Classifications

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B32B 5/02 characterised by structural features of a layer comprising fibres or filaments
B32B 5/14 characterised by a layer differing constitutionally or physically in different parts, e.g. denser near its faces
B32B 5/16 characterised by features of a layer formed of particles, e.g. chips, chopped fibres, powder
B32B 5/18 characterised by features of a layer containing foamed or specifically porous material
B32B 5/22 characterised by the presence of two or more layers which comprise fibres, filaments, granules, or powder, or are foamed or specifically porous

Top Applicants

Top 10 applicants by patent filingsfor class B32, 2013–2023, worldwide · Source: EPO PATSTAT

NITTO DENKO CORPORATION JP 4,719
DNP (DAINIPPON PRINTING COMPANY) 3,989
SAINT-GOBAIN GLASS FR 3,695
NITTO DENKO CORPORATION 3,002
DOW GLOBAL TECHNOLOGIES US 2,809
3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 2,679
FUJIFILM JP 2,360
TOPPAN PRINTING COMPANY 2,310
CORNING US 2,168
SEKISUI CHEMICAL COMPANY JP 2,115