Non-disconnectable pipe joints, e.g. soldered, adhesive, or caulked joints

Introduced: September 1968

Last revised: January 2006

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:: PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL

Filing statistics

IPC F16L 13/00 belongs to the parent subclass F16L, which recorded 368,332 patent applications worldwide between 2013 and 2023. Annual filings grew from 21,486 in 2013 to 44,248 in 2023 (+106%), peaking at 48,514 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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F16L 13/007 specially adapted for joining pipes of dissimilar materials
F16L 13/02 Welded joints
F16L 13/08 Soldered joints
F16L 13/1 Adhesive or cemented joints
F16L 13/12 with a seal made of lead, caulked packing, or the like
F16L 13/14 made by plastically deforming the material of the pipe, e.g. by flanging, rolling

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