F03H PRODUCING A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
Introduced: September 1968
Classification Context
- Section:
- MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- Class:
- MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- Subclass:
- PRODUCING A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
Description
F03H covers unconventional and residual propulsion systems that generate reactive thrust through mechanisms not classified elsewhere in the F03 hierarchy. This includes electromagnetic propulsion, ion drives, plasma thrusters, and other advanced propulsion concepts that do not rely on conventional jet engines, rockets, or fluid-dynamic principles already addressed in other F03 subclasses. The classification serves as a catch-all for emerging and non-traditional reactive propulsion technologies that do not fit into established mechanical or thermal propulsion categories.
Related Keywords
3 direct subcodes
Child Classifications
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- F03H 1/00 Use of plasma to produce a reactive propulsive thrust
- F03H 3/00 Use of photons to produce a reactive propulsive thrust
- F03H 99/00 Subject matter not provided for in other groups of this subclass
Top Applicants
Top 10 applicants by patent filingsfor class F03, 2013–2023, worldwide · Source: EPO PATSTAT
- VESTAS DK 3,539
- WOBBEN PROPERTIES DE 2,922
- SIEMENS GAMESA RENEWABLE ENERGY DK 2,747
- GE (GENERAL ELECTRIC COMPANY) US 2,356
- BEIJING GOLDWIND SCIENCE & CREATION WINDPOWER EQUIPMENT COMPANY 1,228
- SIEMENS DE 886
- SGCC(STATE GRID CORPORATION OF CHINA) 831
- HUANENG CLEAN ENERGY RESEARCH INSTITUTE 785
- MING YANG SMART ENERGY GROUP. 652
- LM WIND POWER DK 600