Tubular elements of cross-section which is non-circular (F28F1/08, F28F1/10 take precedence)

Full Title

Tubular elements; Assemblies of tubular elements (specially adapted for movement F28F5/00) > Tubular elements of cross-section which is non-circular (F28F1/08, F28F1/10 take precedence)

5 direct subcodes

Child Classifications

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F28F 1/022
F28F 1/025
F28F 1/04 polygonal, e.g. rectangular
F28F 1/06 crimped or corrugated in cross-section
F28F 2001/027

Top Applicants

Top 10 applicants by patent filingsfor class F28, 2013–2023, worldwide · Source: EPO PATSTAT

VALEO SYSTEMES THERMIQUES FR 1,945
MITSUBISHI ELECTRIC CORPORATION JP 1,518
MAHLE INTERNATIONAL DE 1,120
ALFA LAVAL SE 1,085
HANON SYSTEMS KR 939
DENSO CORPORATION JP 900
LG ELECTRONICS KR 861
HAMILTON SUNDSTRAND US 795
DAIKIN INDUSTRIES JP 608
DENSO CORPORATION 537