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CPC Subclass Not Allocatable
F15D

FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS

Description

This subclass encompasses methods and apparatus for controlling, directing, and modifying the flow characteristics of gases and liquids in practical applications. It covers devices such as diffusers, nozzles, flow control valves, and systems that use fluid dynamics principles to achieve desired flow patterns, pressure distributions, or velocity profiles. The classification includes both active and passive flow control techniques, including swirl generators, flow straighteners, and jet deflection mechanisms. F15D excludes general fluid mechanics theory and focuses on engineered means for practical flow manipulation in hydraulic, pneumatic, and general fluid systems.

1 direct subcode

Child Classifications

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Top Applicants

Top 10 applicants by patent filingsfor class F15, 2013–2023, worldwide · Source: EPO PATSTAT

  1. ROBERT BOSCH DE 1,281
  2. SMC CORPORATION JP 865
  3. HITACHI CONSTRUCTION MACHINERY COMPANY JP 814
  4. KYB CORPORATION JP 584
  5. SCHAEFFLER TECHNOLOGIES & COMPANY DE 536
  6. CATERPILLAR US 532
  7. FESTO & COMPANY DE 486
  8. JOHN DEERE US 419
  9. KAWASAKI HEAVY IND JP 368
  10. HAMILTON SUNDSTRAND US 368