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CPC technology class · H02

H02N - Electric Machines

Electric machines not otherwise provided for. 3,799 US utility patents granted 2015–2025, with the leading assignees and year-by-year filing trajectory.

3,799
US patents granted
H02
Parent CPC class
20
Active assignees
+28%
5-yr velocity

The verdict

Electric Machines ranks #279 of 670 CPC technology areas - 3,799 US patents granted since 2015, with filing up 28% over five years.

#279
of 670 CPC technology areas
3,799
US patents granted, 2015–2025
Canon
leading assignee (370)
+28%
filing velocity, last 5 yrs
Top assignee: Canon Kabushiki Kaisha (370 patents)

CPC subclass H02N - ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR - covers 3,799 US utility patents granted between 2015 and 2025 according to USPTO PatentsView records, within the broader CPC class H02 (GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER). See our CPC classification guide for how the system works.

The competitive landscape in H02N is shaped by 20 distinct companies actively filing in this space. Canon Kabushiki Kaisha leads with 370 patents, followed by Georgia Tech Research Corporation at 27 grants and TDK Taiwan Corp. at 27.

Filing activity in H02N is up 28% over the past five years versus 2015-2019, a sharp acceleration suggesting an emerging or fast-moving technology area. All counts come directly from USPTO PatentsView and reflect US granted utility patents only.

Is H02N innovation accelerating?

US utility-patent grants per year in H02N, 2015–2025 - recent five years are up 28% versus 2015–2019.

150200250300350400450 20152016201720182019202020212022202320242025 207

Who leads H02N?

The 12 most active assignees in ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR - wider bars mean more grants

patents

What this shows Canon is the most active filer in H02N, holding 370 of the 3,799 patents in this class. Concentration at the top signals how contestable this technology area is for new entrants.

Source USPTO PatentsView, granted utility patents As of 2015–2025 grant years
View data table
Top patent holders in CPC subclass H02N
Rank Company Patents in H02N
#1 Physik Instrumente (pi) Gmbh & Co. KG 49
#2 Georgia Tech Research Corporation 27
#3 TDK Taiwan Corp. 27
#4 Saginomiya Seisakusho, Inc. 27
#5 Sumitomo Osaka Cement Co., Ltd. 24
#6 MEMS Drive, Inc. 18
#7 Omnitek Partners Llc 16
#8 Mitsumi Electric Co., Ltd. 15
#9 MEMS Drive (nanjing) Co., Ltd. 15
#10 Digitaloptics Corporation MEMS 14
#11 Cairdac 14
#12 TOTO Ltd. 13
#13 Stmicroelectronics (crolles 2) SAS 13
#14 Sumitomo Riko Company Limited 13
#15 Citizen Watch Co., Ltd. 12
#16 FACE International Corporaton 12
#17 Korea Electronics Technology Institute 11
#18 Novelis Inc. 11
#19 C-motive Technologies, Inc. 11
#20 Calagen, Inc. 11

About This Class

CPC subclass H02N belongs to class H02.

3,799 patents were granted in this class between 2015 and 2025.

20 companies actively patent in this space.

Classification System

Cooperative Patent Classification (CPC) is a hierarchical patent classification system used by the USPTO and EPO.

← All Technology Classes Technology Rankings →

Footprint here vs. claim strategy

Each dot is a leading H02N assignee, placed by how many patents it holds in this class (horizontal) against its company-wide average claims per patent (vertical) - a read on whether the class is led by broad-but-shallow filers or focused deep-claim players.

Top 14 H02N assignees by class footprint. Bubble size = patents in H02N. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Top 14 H02N assignees by class footprint. Bubble size = patents in H02N. Source: USPTO PatentsView (claim depth is company-wide across all classes). Scatter plot of 14 data points (bubble-sized by third dimension). 510152025 102030405060 Patents in H02N Avg claims / patent (company-wide) Physik Instrumente (P…Georgia Tech ResearchTdk TaiwanSaginomiya SeisakushoSumitomo Osaka CementMems DriveOmnitek PartnersMitsumi ElectricMems Drive (Nanjing)Digitaloptics MemsCairdacTotoStmicroelectronics (C…Sumitomo Riko
Top 14 H02N assignees by class footprint. Bubble size = patents in H02N. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Frequently Asked Questions

What is CPC class H02N?
CPC subclass H02N covers ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR. It belongs to CPC class H02 (GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER), with 3,799 US utility patents granted since 2015.
How many patents have been filed in H02N?
3,799 US utility patents were granted in CPC subclass H02N between 2015 and 2025, based on USPTO PatentsView data.
Which company holds the most patents in H02N?
Canon Kabushiki Kaisha leads H02N with 370 patents, making it the most active assignee in this technology area.
How is patent data for H02N collected?
Patent data comes from USPTO PatentsView, a public research dataset maintained by the United States Patent and Trademark Office. It covers all US granted utility patents and assigns CPC codes based on the technology described in each patent.
What is the difference between CPC class and subclass?
A CPC class (e.g., H02) is a broad technology category. Subclasses like H02N provide finer granularity within that category. PlainPatent organizes data at the subclass level (4-character codes) for the most useful view of technology domains.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from USPTO PatentsView - official U.S. government patent data. See our methodology for computation details. Retrieved and formatted by PlainPatent Editorial

Every figure on PlainPatent is rendered directly from USPTO source data, no number is typed in by an editor. This page draws directly on USPTO source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.