PlainPatent

CPC technology class · F25

F25D - Refrigerators

Refrigerators; cold rooms; ice-boxes; cooling or freezing apparatus not otherwise provided for. 8,866 US utility patents granted 2015–2025, with the leading assignees and year-by-year grant trajectory.

8,866
US patents granted
#2/4
in F25
36.3%
F25 class share
+24%
5-yr velocity

The verdict

According to USPTO PatentsView, Refrigerators ranks #181 of 670 CPC technology areas - 8,866 US patents granted since 2015, with recorded grant volume up 24% over five years.

#181
of 670 CPC technology areas
8,866
US patents granted, 2015–2025
Lg
leading assignee (1,512)
+24%
grant velocity, last 5 yrs

How F25D's grant cadence moved

Between 2020–2024, F25D recorded 4,337 grants versus 3,492 in 2015–2019 (+24% equal-window velocity). Across complete years, output peaked in 2020 at 941 grants and bottomed in 2015 at 554 (+70% peak-over-trough). Lead assignee LG Electronics Inc. holds 17.1% of the class ; the top three share 30.7%.

Leaderboard read

F25D concentration, lead at 17.1%

LG Electronics Inc. leads this historical grant record at 17.1% of F25D - foreign corporation assignees hold 54% of class grants (3,384 of 6,238). Figures describe granted US utility patents in this CPC subclass, not current investment or legal strength.

Leader's share
17.1%

1,512 of 8,866 grants

Top three share
30.7%

of the class's recorded grants

Lead over #2
657

more grants than Whirlpool Corporation

Where F25D sits inside F25

Among 4 subclasses in F25 (Refrigeration OR COOLING; Combined Heating AND Refrigeration SYSTEMS; Heat Pump SYSTEMS; Manufacture OR Storage OF ICE; Liquefaction Solidification OF Gases), F25D ranks #2 and holds 36.3% of the parent class's 24,410 recorded grants. Sibling chips below are the other subclasses in the same parent class, not the nationwide volume/lead-share peers further down.

F25B 12,158 F25J 1,732 F25C 1,654

Rising assignees active in F25D

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 Qingdao Haier Refrigerator Co., Ltd. 32x 2 → 63 company-wide · 94 in F25D
  2. #2 Haier Smart Home Co., Ltd. 14x 14 → 199 company-wide · 121 in F25D
  3. #3 Asymptote Ltd. 10x 1 → 10 company-wide · 6 in F25D
  4. #4 ColdSnap, Corp. 8.33x 3 → 25 company-wide · 14 in F25D
  5. #5 Messer SE & Co. KGaA 6.00x 0 → 6 company-wide · 5 in F25D

F25D grants by year, peak 2020 (941)

US utility-patent grants per year in F25D, 2015–2025 - recent five years are up 24% versus 2015–2019.

5006007008009001,000 20152016201720182019202020212022202320242025 650

Who leads F25D?

The 12 most active assignees in REFRIGERATORS; Cold ROOMS; ICE-BOXES; Cooling OR Freezing Apparatus NOT Otherwise Provided FOR - wider bars mean more grants

patents

What this shows Lg is the most active filer in F25D, holding 1,512 of the 8,866 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 F25D
Rank Company Patents in F25D
#1 LG Electronics Inc. 1,512
#2 Whirlpool Corporation 855
#3 BSH Hausgeräte GmbH 355
#4 Haier US Appliance Solutions, Inc. 331
#5 Electrolux Home Products, Inc. 170
#6 Carrier Corporation 164
#7 Haier Smart Home Co., Ltd. 121
#8 Qingdao Haier Refrigerator Co., Ltd. 94
#9 Midea Group Co., Ltd. 83
#10 Qingdao Haier Joint Stock Co., Ltd. 81
#11 Thermo King LLC 68
#12 Dongbu Daewoo Electronics Corporation 57
#13 Hefei Hualing Co., Ltd. 48
#14 Hefei Midea Refrigerator Co., Ltd. 46
#15 Lennox Industries Inc. 36
#16 Dometic Sweden AB 35
#17 B/E Aerospace, Inc. 34
#18 Ember Technologies, Inc. 34
#19 Arcelik Anonim Sirketi 33
#20 Yeti Coolers, LLC 32

Footprint here vs. claim strategy

Each dot is a leading F25D 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 F25D assignees by class footprint. Bubble size = patents in F25D. Source: USPTO PatentsView (claim depth is company-wide across all classes). Scatter plot of 14 data points (bubble-sized by third dimension). 81012141618 -5000500100015002000 Patents in F25D Avg claims / patent (company-wide) LgWhirlpoolBsh HausgeräteHaier Us Appliance…Electrolux Home…CarrierHaier Smart HomeQingdao Haier…Midea GroupQingdao Haier Joint…Thermo KingDongbu DaewooHefei HualingHefei Midea Refrigerat…
Top 14 F25D assignees by class footprint. Bubble size = patents in F25D. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Classes near F25D's 8,866-grant footprint

Nationwide nearest neighbors for F25D (#181 of 670 by volume ; lead share 17.1%) - not the F25 parent-class siblings above.

Nearest by grant volume

G01K 8,803 B01F 8,785 C03C 8,986 B08B 9,052

Nearest by lead-assignee share

D05C 17.2% B41C 17.4% H01T 16.7% D05B 16.6%

Questions about F25D

Which company holds the most patents in F25D?
LG Electronics Inc. leads F25D with 1,512 patents (17.1% of the subclass). By PatentsView assignee type, foreign corporations account for 54% of class grants.
Which F25D assignees grew fastest recently?
Among assignees with ≥5 grants in F25D, Qingdao Haier Refrigerator Co., Ltd. shows the highest company-wide grant multiple (32x: 2 grants in 2019–2021 → 63 in 2022–2024) while holding 94 patents in this subclass. Growth is company-wide, not class-only.
How does F25D compare inside parent class F25?
Inside F25 (Refrigeration OR COOLING; Combined Heating AND Refrigeration SYSTEMS; Heat Pump SYSTEMS; Manufacture OR Storage OF ICE; Liquefaction Solidification OF Gases), F25D ranks #2 of 4 subclasses by grant volume and holds 36.3% of the parent class total. The largest sibling is F25B (12,158 grants).

What to do with this data

F25D in context - here's where to go next.

  • LG Electronics Inc. leads F25D with 1,512 grants in this class. See full portfolio
  • F25D ranks #181 of 670 by grant volume among all tracked CPC technology areas. See the ranking
  • Inside parent class F25, the largest sibling subclass is F25B with 12,158 grants. Explore F25B

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

Methodology - F25D figures are USPTO PatentsView granted-utility totals for this subclass (8,866 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.