Details

Introduced: September 1968

Last revised: January 2006

Full Title

Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing > Details

Classification Context

Section:: MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Class:: ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
Subclass:: VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING

Filing statistics

IPC F16K 3/3 belongs to the parent subclass F16K, which recorded 346,705 patent applications worldwide between 2013 and 2023. Annual filings grew from 21,289 in 2013 to 37,962 in 2023 (+78%), peaking at 42,240 applications in 2020. The most active applicants in class F16 are SCHAEFFLER TECHNOLOGIES & COMPANY (21,545 applications), ZAHNRADFABRIK FRIEDRICHSHAFEN (9,446 applications) and TOYOTA MOTOR CORPORATION (7,215 applications).

Source: EPO PATSTAT, worldwide filings

6 direct subcodes

Child Classifications

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F16K 3/312 Line blinds
F16K 3/314 Forms or constructions of slides; Attachment of the slide to the spindle
F16K 3/316 Guiding of the slide
F16K 3/32 Means for additional adjustment of the rate of flow
F16K 3/34 Arrangements for modifying the way in which the rate of flow varies during the actuation of the valve
F16K 3/36 Features relating to lubrication

Top Applicants

Top 10 applicants by patent filingsfor class F16, 2013–2023, worldwide · Source: EPO PATSTAT

SCHAEFFLER TECHNOLOGIES & COMPANY DE 21,545
ZAHNRADFABRIK FRIEDRICHSHAFEN DE 9,446
TOYOTA MOTOR CORPORATION 7,215
HYUNDAI MOTOR COMPANY KR 6,846
ROBERT BOSCH DE 6,106
NTN CORPORATION 5,305
SKF SE 4,219
KIA MOTORS CORPORATION KR 3,852
NSK 3,850
HONDA MOTOR COMPANY 3,639