PlainPatent

CPC technology class · A47

A47L - Domestic Washing Or Cleaning

Domestic washing or cleaning ; suction cleaners in general. 9,460 US utility patents granted 2015–2025, with the leading assignees and year-by-year grant trajectory.

9,460
US patents granted
#1/9
in A47
20.7%
A47 class share
+25%
5-yr velocity

The verdict

According to USPTO PatentsView, Domestic Washing Or Cleaning ranks #175 of 670 CPC technology areas - 9,460 US patents granted since 2015, with recorded grant volume up 25% over five years.

#175
of 670 CPC technology areas
9,460
US patents granted, 2015–2025
Lg
leading assignee (978)
+25%
grant velocity, last 5 yrs

How A47L's grant cadence moved

Between 2020–2024, A47L recorded 4,779 grants versus 3,822 in 2015–2019 (+25% equal-window velocity). Across complete years, output peaked in 2022 at 998 grants and bottomed in 2015 at 649 (+54% peak-over-trough). Lead assignee LG Electronics Inc. holds 10.3% of the class ; the top three share 19.8%.

Leaderboard read

A47L concentration, lead at 10.3%

LG Electronics Inc. leads this historical grant record at 10.3% of A47L - foreign corporation assignees hold 57% of class grants (4,092 of 7,177). Figures describe granted US utility patents in this CPC subclass, not current investment or legal strength.

Leader's share
10.3%

978 of 9,460 grants

Top three share
19.8%

of the class's recorded grants

Lead over #2
507

more grants than Whirlpool Corporation

Where A47L sits inside A47

Among 9 subclasses in A47 (FURNITURE; Domestic Articles OR APPLIANCES; Coffee MILLS; Spice MILLS; Suction Cleaners IN General), A47L ranks #1 and holds 20.7% of the parent class's 45,744 recorded grants. Sibling chips below are the other subclasses in the same parent class, not the nationwide volume/lead-share peers further down.

A47J 8,354 A47B 7,915 A47C 6,586 A47G 4,697 A47F 3,660 A47K 3,567 A47D 1,075 A47H 430

Rising assignees active in A47L

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 Guangdong Midea White Home Appliance Technology Innovation Center Co., Ltd. 26x 0 → 26 company-wide · 10 in A47L
  2. #2 Beijing Roborock Technology Co., Ltd. 21x 3 → 63 company-wide · 26 in A47L
  3. #3 Yunjing Intelligence (Shenzhen) Co., Ltd. 18x 0 → 18 company-wide · 20 in A47L
  4. #4 Yunjing Intelligence Innovation (SHENZHEN) Co., Ltd. 14x 0 → 14 company-wide · 20 in A47L
  5. #5 Shenzhen Silver Star Intelligent Group Co., Ltd 14x 0 → 14 company-wide · 15 in A47L

A47L grants by year, peak 2022 (998)

US utility-patent grants per year in A47L, 2015–2025 - recent five years are up 25% versus 2015–2019.

6007008009001,0001,100 20152016201720182019202020212022202320242025 651

Who leads A47L?

The 12 most active assignees in Domestic Washing OR Cleaning ; Suction Cleaners IN General - wider bars mean more grants

patents

What this shows Lg is the most active filer in A47L, holding 978 of the 9,460 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 A47L
Rank Company Patents in A47L
#1 LG Electronics Inc. 978
#2 Whirlpool Corporation 471
#3 Omachron Intellectual Property Inc. 421
#4 iRobot Corporation 316
#5 Haier US Appliance Solutions, Inc. 260
#6 BSH Hausgeräte GmbH 239
#7 Bissell Inc. 220
#8 SharkNinja Operating LLC 178
#9 Dyson Technology Limited 170
#10 The Procter & Gamble Company 155
#11 Midea Group Co., Ltd. 134
#12 Bissell Homecare, Inc. 132
#13 Techtronic Floor Care Technology Limited 120
#14 Ecolab USA Inc. 106
#15 Illinois Tool Works Inc. 93
#16 Vorwerk & Co. Interholding GMBH 92
#17 AI Incorporated 78
#18 Electrolux Appliances Aktiebolag 70
#19 Makita Corporation 69
#20 Emerson Electric Co. 69

Footprint here vs. claim strategy

Each dot is a leading A47L 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 A47L assignees by class footprint. Bubble size = patents in A47L. Source: USPTO PatentsView (claim depth is company-wide across all classes). Scatter plot of 14 data points (bubble-sized by third dimension). 510152025 020040060080010001200 Patents in A47L Avg claims / patent (company-wide) LgWhirlpoolOmachron Intellectual…irobotHaier Us Appliance…Bsh HausgeräteBissellSharkninja OperatingDyson TechnologyThe Procter & GambleMidea GroupBissell HomecareTechtronic Floor Care…Ecolab Usa
Top 14 A47L assignees by class footprint. Bubble size = patents in A47L. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Classes near A47L's 9,460-grant footprint

Nationwide nearest neighbors for A47L (#175 of 670 by volume ; lead share 10.3%) - not the A47 parent-class siblings above.

Nearest by grant volume

B60C 9,320 E05B 9,176 A23V 9,116 Y02W 9,860

Nearest by lead-assignee share

E03C 10.3% G07D 10.3% B64D 10.4% F02M 10.4%

Questions about A47L

Which company holds the most patents in A47L?
LG Electronics Inc. leads A47L with 978 patents (10.3% of the subclass). By PatentsView assignee type, foreign corporations account for 57% of class grants.
Which A47L assignees grew fastest recently?
Among assignees with ≥5 grants in A47L, Guangdong Midea White Home Appliance Technology Innovation Center Co., Ltd. shows the highest company-wide grant multiple (26x: 0 grants in 2019–2021 → 26 in 2022–2024) while holding 10 patents in this subclass. Growth is company-wide, not class-only.
How does A47L compare inside parent class A47?
Inside A47 (FURNITURE; Domestic Articles OR APPLIANCES; Coffee MILLS; Spice MILLS; Suction Cleaners IN General), A47L ranks #1 of 9 subclasses by grant volume and holds 20.7% of the parent class total. The largest sibling is A47J (8,354 grants).

What to do with this data

A47L 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 - A47L figures are USPTO PatentsView granted-utility totals for this subclass (9,460 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.