IPC Main Group
F16L 53/00 Heating of pipes or pipe systems; Cooling of pipes or pipe systems
Introduced: September 1968
Last revised: January 2018
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
Additional Content
Devices for preventing freezing of pipes in water main or service pipe systems Devices for thawing frozen pipes in water main or service pipe systems
2 direct subcodes
Child Classifications
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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