Filters for breathing-protection purposes

Introduced: September 1968

Last revised: January 2006

Classification Context

Section:: HUMAN NECESSITIES
Class:: LIFE-SAVING; FIRE-FIGHTING
Subclass:: DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING

Filing statistics

IPC A62B 23/00 belongs to the parent subclass A62B, which recorded 63,973 patent applications worldwide between 2013 and 2023. Annual filings grew from 3,409 in 2013 to 4,757 in 2023 (+40%), peaking at 11,573 applications in 2020. The most active applicants in class A62 are SGCC(STATE GRID CORPORATION OF CHINA) (1,604 applications), 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) (1,202 applications) and TYCO FIRE PRODUCTS (906 applications).

Source: EPO PATSTAT, worldwide filings

Related Keywords

FILTER(S) for breathing-protection purposes

3 direct subcodes

Child Classifications

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A62B 23/02 for respirators
A62B 23/04 for gasproof shelters
A62B 23/06 Nose filters

Top Applicants

Top 10 applicants by patent filingsfor class A62, 2013–2023, worldwide · Source: EPO PATSTAT

SGCC(STATE GRID CORPORATION OF CHINA) 1,604
3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 1,202
TYCO FIRE PRODUCTS US 906
NOHMI BOSAI 429
LG ENERGY SOLUTION KR 414
HOCHIKI CORPORATION 408
HUBEI JI'ANDUN FIRE-FIGHTING TECHNOLOGY COMPANY 374
HONEYWELL INTERNATIONAL US 355
SINOPEC (CHINA PETROCHEMICAL CORPORATION) 346
FISHER AND PAYKEL HEALTHCARE NZ 305