PlainPatent

CPC technology class · H05

H05B - Electric Heating

Electric heating; electric light sources not otherwise provided for; circuit arrangements for electric light sources, in general. 33,418 US utility patents granted 2015–2025, with the leading assignees and year-by-year filing trajectory.

33,418
US patents granted
H05
Parent CPC class
20
Active assignees
+3%
5-yr velocity

The verdict

Electric Heating ranks #54 of 670 CPC technology areas - 33,418 US patents granted since 2015, with filing up 3% over five years.

#54
of 670 CPC technology areas
33,418
US patents granted, 2015–2025
Samsung
leading assignee (835)
+3%
filing velocity, last 5 yrs
Top assignee: Samsung Electronics Co., Ltd. (835 patents)

CPC subclass H05B - ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL - covers 33,418 US utility patents granted between 2015 and 2025 according to USPTO PatentsView records, within the broader CPC class H05 (ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR). See our CPC classification guide for how the system works.

The competitive landscape in H05B is shaped by 20 distinct companies actively filing in this space. Samsung Electronics Co., Ltd. leads with 835 patents, followed by Lutron Technology Company Llc at 646 grants and Panasonic Intellectual Property Management Co., Ltd. at 610.

Filing activity in H05B is up 3% over the past five years versus 2015-2019, a relatively steady filing pace. All counts come directly from USPTO PatentsView and reflect US granted utility patents only.

Is H05B innovation accelerating?

US utility-patent grants per year in H05B, 2015–2025 - recent five years are up 3% versus 2015–2019.

1,5002,0002,5003,0003,5004,000 20152016201720182019202020212022202320242025 1,935

Who leads H05B?

The 12 most active assignees in ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL - wider bars mean more grants

patents

What this shows Samsung is the most active filer in H05B, holding 835 of the 33,418 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 H05B
Rank Company Patents in H05B
#1 Signify Holding B.v. 776
#2 Lutron Technology Company Llc 646
#3 Panasonic Intellectual Property Management Co., Ltd. 610
#4 Sharp Kabushiki Kaisha 450
#5 Philips Lighting Holding B.v. 422
#6 Semiconductor Energy Laboratory Co., Ltd. 380
#7 Altria Client Services Llc 380
#8 Koniniklijke Philips N.v. 376
#9 ABL IP Holding Llc 339
#10 Philip Morris Products S.a. 246
#11 Cree, Inc. 214
#12 Whirlpool Corporation 212
#13 RAI Strategic Holdings, Inc. 198
#14 Lumileds Llc 190
#15 Lutron Electronics Co., Inc. 188
#16 Applied Materials, Inc. 172
#17 Osram Gmbh 167
#18 Jiaxing Super Lighting Electric Appliance Co., Ltd 152
#19 Rohm Co., Ltd. 151
#20 Japan Display Inc. 149

About This Class

CPC subclass H05B belongs to class H05.

33,418 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 H05B 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 H05B assignees by class footprint. Bubble size = patents in H05B. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Top 14 H05B assignees by class footprint. Bubble size = patents in H05B. Source: USPTO PatentsView (claim depth is company-wide across all classes). Scatter plot of 14 data points (bubble-sized by third dimension). 510152025 02004006008001000 Patents in H05B Avg claims / patent (company-wide) Signify Holding B VLutron TechnologyPanasonic Intellectua…SharpPhilips Lighting Hold…Semiconductor Energy…Altria Client ServicesKoniniklijke PhilipsAbl Ip HoldingPhilip Morris ProductsCreeWhirlpoolRai Strategic HoldingsLumileds
Top 14 H05B assignees by class footprint. Bubble size = patents in H05B. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Frequently Asked Questions

What is CPC class H05B?
CPC subclass H05B covers ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL. It belongs to CPC class H05 (ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR), with 33,418 US utility patents granted since 2015.
How many patents have been filed in H05B?
33,418 US utility patents were granted in CPC subclass H05B between 2015 and 2025, based on USPTO PatentsView data.
Which company holds the most patents in H05B?
Samsung Electronics Co., Ltd. leads H05B with 835 patents, making it the most active assignee in this technology area.
How is patent data for H05B 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., H05) is a broad technology category. Subclasses like H05B 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.