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 grant trajectory.

33,418
US patents granted
#2/6
in H05
32.6%
H05 class share
-10%
5-yr velocity

The verdict

According to USPTO PatentsView, Electric Heating ranks #54 of 670 CPC technology areas - 33,418 US patents granted since 2015, with recorded grant volume down 10% over five years.

#54
of 670 CPC technology areas
33,418
US patents granted, 2015–2025
Samsung
leading assignee (835)
-10%
grant velocity, last 5 yrs

How H05B's grant cadence moved

Between 2020–2024, H05B recorded 14,437 grants versus 15,966 in 2015–2019 (-10% equal-window velocity). Across complete years, output peaked in 2019 at 3,677 grants and bottomed in 2023 at 2,594 (+42% peak-over-trough). Lead assignee Signify Holding B.V. holds 2.3% of the class ; the top three share 6.1%.

Leaderboard read

H05B concentration, lead at 2.3%

Signify Holding B.V. leads this historical grant record at 2.3% of H05B - foreign corporation assignees hold 59% of class grants (12,933 of 22,030). Figures describe granted US utility patents in this CPC subclass, not current investment or legal strength.

Leader's share
2.3%

776 of 33,418 grants

Top three share
6.1%

of the class's recorded grants

Lead over #2
130

more grants than Lutron Technology Company LLC

Where H05B sits inside H05

Among 6 subclasses in H05 (Electric Techniques NOT Otherwise Provided FOR), H05B ranks #2 and holds 32.6% of the parent class's 102,507 recorded grants. Sibling chips below are the other subclasses in the same parent class, not the nationwide volume/lead-share peers further down.

H05K 62,449 H05H 3,951 H05G 2,073 H05F 557 H05C 59

Rising assignees active in H05B

Company-wide grant multiples (2022–2024 vs 2019–2021) among assignees with ≥5 patents in this subclass. Growth is company-wide; class patent counts are subclass-specific.

  1. #1 LX Semicon Co., Ltd. 177x 0 → 177 company-wide · 8 in H05B
  2. #2 Aspire North America LLC 99x 0 → 99 company-wide · 19 in H05B
  3. #3 Korrus, Inc. 71x 0 → 71 company-wide · 56 in H05B
  4. #4 HLI Solutions, Inc. 46x 0 → 46 company-wide · 16 in H05B
  5. #5 Niterra Co., Ltd. 38x 0 → 38 company-wide · 7 in H05B

H05B grants by year, peak 2019 (3,677)

US utility-patent grants per year in H05B, 2015–2025 - recent five years are down 10% 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

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). 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 Intellectual…SharpPhilips Lighting…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).

Classes near H05B's 33,418-grant footprint

Nationwide nearest neighbors for H05B (#54 of 670 by volume ; lead share 2.5%) - not the H05 parent-class siblings above.

Nearest by grant volume

H04R 33,502 H02M 33,952 C07C 32,521 Y02A 32,476

Nearest by lead-assignee share

G16Z 2.5% C12P 2.5% C05F 2.5% D06N 2.5%

Questions about H05B

Which company holds the most patents in H05B?
Samsung Electronics Co., Ltd. leads H05B with 835 patents (2.3% of the subclass). By PatentsView assignee type, foreign corporations account for 59% of class grants.
Which H05B assignees grew fastest recently?
Among assignees with ≥5 grants in H05B, LX Semicon Co., Ltd. shows the highest company-wide grant multiple (177x: 0 grants in 2019–2021 → 177 in 2022–2024) while holding 8 patents in this subclass. Growth is company-wide, not class-only.
How does H05B compare inside parent class H05?
Inside H05 (Electric Techniques NOT Otherwise Provided FOR), H05B ranks #2 of 6 subclasses by grant volume and holds 32.6% of the parent class total. The largest sibling is H05K (62,449 grants).

What to do with this data

H05B in context - here's where to go next.

Figures reflect USPTO PatentsView grant data through 2026-05-15; pending applications not yet granted are not counted.

Methodology - H05B figures are USPTO PatentsView granted-utility totals for this subclass (33,418 grants in the tracked window).

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.