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IPC Subgroup
F15D 1/06

by influencing the boundary layer

Introduced: September 1968

Last revised: January 2006

Full Title

Influencing the flow of fluids > in pipes or conduits > by influencing the boundary layer

Classification Context

Section:
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Class:
FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
Subclass:
FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS

Filing statistics

IPC F15D 1/06 belongs to the parent subclass F15D, which recorded 5,001 patent applications worldwide between 2013 and 2023. Annual filings declined from 440 in 2013 to 361 in 2023 (-18%), peaking at 506 applications in 2020. The most active applicants in class F15 are ROBERT BOSCH (1,079 applications), SCHAEFFLER TECHNOLOGIES & COMPANY (980 applications) and SMC CORPORATION (737 applications).

Source: EPO PATSTAT, worldwide filings

Related Keywords

BOUNDARY layer control in general

Top Applicants

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

  1. ROBERT BOSCH DE 1,079
  2. SCHAEFFLER TECHNOLOGIES & COMPANY DE 980
  3. SMC CORPORATION JP 737
  4. HITACHI CONSTRUCTION MACHINERY COMPANY JP 674
  5. KYB CORPORATION JP 525
  6. CATERPILLAR US 461
  7. FESTO & COMPANY DE 451
  8. ZHEJIANG UNIVERSITY 448
  9. HITACHI CONSTRUCTION MACHINERY COMPANY 442
  10. XUZHOU HEAVY MACHINERY COMPANY 404