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.
Filing statistics
IPC subclass H02N recorded 44,586 patent applications worldwide between 2013 and 2023. Annual filings declined from 3,945 in 2013 to 3,640 in 2023 (-8%), peaking at 4,725 applications in 2020. The most active applicants in class H02 are SGCC(STATE GRID CORPORATION OF CHINA) (54,496 applications), MITSUBISHI ELECTRIC CORPORATION (10,495 applications) and TOYOTA MOTOR CORPORATION (9,464 applications).
Source: EPO PATSTAT, worldwide filings
In class comparison
H02N ranks 9th of 9 subclasses with filings in H02, with 44,586 applications between 2013 and 2023, 1.9% of the class. Annual filings declined 8% from 2013 to 2023, below the class as a whole (+132%).
| Rank | Subclass | Title | Applications | Share |
|---|---|---|---|---|
| 1 | H02J, Electric Power Networks; Circuit Arrangements or Systems for Supplying or Distributing Electric Power; Systems for Storing Electric Energy | Electric Power Networks; Circuit Arrangements or Systems for Supplying or Distributing Electric Power; Systems for Storing Electric Energy | 623,631 | 27.2% |
| 2 | H02K, Dynamo-Electric Machines | Dynamo-Electric Machines | 426,168 | 18.6% |
| 3 | H02G, Installation of Electric Cables or Lines, or of Combined Optical and Electric Cables or Lines | Installation of Electric Cables or Lines, or of Combined Optical and Electric Cables or Lines | 280,513 | 12.3% |
| 4 | H02M, Apparatus for Conversion Between Ac and Ac, Between Ac and Dc, or Between Dc and Dc, and for Use With Mains or Similar Power Supply Systems; Conversion of Dc or Ac Input Power Into Surge Output Power; Control or Regulation Thereof | Apparatus for Conversion Between Ac and Ac, Between Ac and Dc, or Between Dc and Dc, and for Use With Mains or Similar Power Supply Systems; Conversion of Dc or Ac Input Power Into Surge Output Power; Control or Regulation Thereof | 261,349 | 11.4% |
| 5 | H02B, Boards, Substations or Switching Arrangements for the Supply or Distribution of Electric Power | Boards, Substations or Switching Arrangements for the Supply or Distribution of Electric Power | 228,580 | 10.0% |
| 6 | H02S, Generation of Electric Power by Conversion of Infrared Radiation, Visible Light or Ultraviolet Light, e.g. Using Photovoltaic [PV] Modules | Generation of Electric Power by Conversion of Infrared Radiation, Visible Light or Ultraviolet Light, e.g. Using Photovoltaic [PV] Modules | 178,704 | 7.8% |
| 7 | H02H, Emergency Protective Circuit Arrangements | Emergency Protective Circuit Arrangements | 123,243 | 5.4% |
| 8 | H02P, Control or Regulation of Electric Motors, Electric Generators or Dynamo-Electric Converters; Controlling Transformers, Reactors or Choke Coils | Control or Regulation of Electric Motors, Electric Generators or Dynamo-Electric Converters; Controlling Transformers, Reactors or Choke Coils | 122,940 | 5.4% |
| 9 | H02N | Electric Machines Not Otherwise Provided for | 44,586 | 1.9% |
Source: EPO PATSTAT, worldwide filings
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