H02N ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
Introduced: September 1968
Classification Context
- Section:
- ELECTRICITY
- Class:
- GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
- Subclass:
- ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
Description
H02N covers electric machines and motors that do not fit within the standard categories of rotating machines, transformers, or other specifically defined electrical equipment. This subclass includes unconventional electromechanical devices such as electrostatic motors, piezoelectric actuators, magnetostrictive devices, and other electromagnetic conversion systems. It serves as a residual category for novel or specialized electric machine types that lack dedicated classification provisions elsewhere in H02. Applications include emerging technologies in micro-actuation, energy harvesting, and experimental motor designs that do not conform to traditional AC/DC motor architectures.
Related Keywords
8 direct subcodes
Child Classifications
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- H02N 1/00 Electrostatic generators or motors using a solid moving electrostatic charge carrier
- H02N 10/00 Electric motors using thermal effects
- H02N 11/00 Generators or motors not provided for elsewhere; Alleged obtained by electric or magnetic means
- H02N 13/00 Clutches or holding devices using electrostatic attraction, e.g. using Johnson-Rahbek effect
- H02N 15/00 Holding or levitation devices using magnetic attraction or repulsion, not otherwise provided for
- H02N 2/00 Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N 3/00 Generators in which thermal or kinetic energy is converted into electrical energy by ionisation of a fluid and removal of the charge therefrom
- H02N 99/00 Subject matter not provided for in other groups of this subclass
Top Applicants
Top 10 applicants by patent filingsfor class H02, 2013–2023, worldwide · Source: EPO PATSTAT
- SGCC(STATE GRID CORPORATION OF CHINA) 54,496
- MITSUBISHI ELECTRIC CORPORATION JP 10,495
- TOYOTA MOTOR CORPORATION 9,464
- GUANGDONG POWER GRID CORPORATION 9,339
- ROBERT BOSCH DE 8,226
- SIEMENS DE 8,218
- DENSO CORPORATION 7,063
- MITSUBISHI ELECTRIC CORPORATION 6,619
- SAMSUNG ELECTRONICS COMPANY KR 5,826
- GREE ELECTRIC APPLIANCES 5,094