Layered products essentially comprising natural or synthetic rubber

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 25/00 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

8 direct subcodes

Child Classifications

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B32B 25/02 with fibres or particles embedded in it or bonded with it
B32B 25/04 comprising rubber as the main or only constituent of a layer, next to another layer of a specific substance
B32B 25/1 next to a fibrous or filamentary layer
B32B 25/12 comprising natural rubber
B32B 25/14 comprising copolymers in which synthetic rubber constituents predominate
B32B 25/16 comprising polydienes or poly-halodienes
B32B 25/18 comprising butyl or halobutyl rubber
B32B 25/2 comprising silicone rubber

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