CPC technology class · F25

F25C - Producing

Producing, working or handling ice. 1,654 US utility patents granted 2015–2025, with the leading assignees and year-by-year grant trajectory.

Compiled by PlainPatent · May 15, 2026

1,654
US patents granted: #4/4
in F25: 6.8%
F25 class share: +8%
5-yr velocity

The verdict

According to USPTO PatentsView, Producing ranks #392 of 670 CPC technology areas - 1,654 US patents granted since 2015, with recorded grant volume up 8% over five years.

#392
of 670 CPC technology areas: 1,654
US patents granted, 2015–2025: Lg
leading assignee (272): +8%
grant velocity, last 5 yrs

How F25C's grant cadence moved

Between 2020–2024, F25C recorded 759 grants versus 706 in 2015–2019 (+8% equal-window velocity). Across complete years, output peaked in 2024 at 187 grants and bottomed in 2021 at 130 (+44% peak-over-trough). Lead assignee Whirlpool Corporation holds 15.7% of the class ; the top three share 27.6%.

Leaderboard read

F25C concentration, lead at 15.7%

Whirlpool Corporation leads this historical grant record at 15.7% of F25C - us corporation assignees hold 68% of class grants (642 of 950). Figures describe granted US utility patents in this CPC subclass, not current investment or legal strength.

Leader's share: 15.7%
Top three share: 27.6%
Lead over #2: 138

Where F25C 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), F25C ranks #4 and holds 6.8% 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 F25D 8,866 F25J 1,732

Rising assignees active in F25C

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 Leer Group 4.60x 5 → 23 company-wide · 8 in F25C
#2 Reddy ICE LLC 3.00x 2 → 6 company-wide · 10 in F25C
#3 Bluenix Co., Ltd. 3.00x 0 → 3 company-wide · 5 in F25C
#4 ICE House America, LLC 3.00x 1 → 3 company-wide · 5 in F25C
#5 Hoshizaki America, Inc. 2.00x 2 → 4 company-wide · 10 in F25C

F25C grants by year, peak 2024 (187)

US utility-patent grants per year in F25C, 2015–2025 - recent five years are up 8% versus 2015–2019.

Whirlpool

259
Haier Us Appliance…

121
Bsh Hausgeräte

76
Electrolux Home…

48
True Manufacturing

44
Dongbu Daewoo

42
Midea Group

35
Nidec Sankyo

22
Snowie

19
Hefei Hualing

17
Hefei Midea Refrigerat…

17
Bsh Home Appliances

16

What this shows Lg is the most active filer in F25C, holding 272 of the 1,654 patents in this class. Concentration at the top signals how contestable this technology area is for new entrants.

View data table

Top patent holders in CPC subclass F25C
Rank	Company	Patents in F25C
#1	Whirlpool Corporation	259
#2	Haier US Appliance Solutions, Inc.	121
#3	BSH Hausgeräte GmbH	76
#4	Electrolux Home Products, Inc.	48
#5	True Manufacturing Co., Inc.	44
#6	Dongbu Daewoo Electronics Corporation	42
#7	Midea Group Co., Ltd.	35
#8	Nidec Sankyo Corporation	22
#9	Snowie LLC	19
#10	Hefei Hualing Co., Ltd.	17
#11	Hefei Midea Refrigerator Co., Ltd.	17
#12	BSH Home Appliances Corporation	16
#13	Manitowoc Foodservice Companies, LLC	12
#14	Coway Co., Ltd.	11
#15	Hisense Ronshen (GUANGDONG) Refrigerator Co., Ltd.	10
#16	Hoshizaki America, Inc.	10
#17	Reddy ICE LLC	10
#18	emz-Hanauer GmbH & Co. KGaA	9
#19	Leer Group	8
#20	Cornelius, Inc.	7

Footprint here vs. claim strategy

Each dot is a leading F25C 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 F25C assignees by class footprint. Bubble size = patents in F25C. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Classes near F25C's 1,654-grant footprint

Nationwide nearest neighbors for F25C (#392 of 670 by volume ; lead share 16.4%) - not the F25 parent-class siblings above.

Nearest by grant volume

G16Y 1,652 A24D 1,661 F01C 1,662 G16C 1,640

Nearest by lead-assignee share

A24B 16.3% E21B 16.3% D05B 16.6% H01T 16.7%

Questions about F25C

Which company holds the most patents in F25C?

LG Electronics Inc. leads F25C with 272 patents (15.7% of the subclass). By PatentsView assignee type, us corporations account for 68% of class grants.

Which F25C assignees grew fastest recently?

Among assignees with ≥5 grants in F25C, Leer Group shows the highest company-wide grant multiple (4.60x: 5 grants in 2019–2021 → 23 in 2022–2024) while holding 8 patents in this subclass. Growth is company-wide, not class-only.

How does F25C 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), F25C ranks #4 of 4 subclasses by grant volume and holds 6.8% of the parent class total. The largest sibling is F25B (12,158 grants).

What to do with this data

F25C in context - here's where to go next.

Whirlpool Corporation leads F25C with 259 grants in this class. See full portfolio
F25C ranks #392 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 - F25C figures are USPTO PatentsView granted-utility totals for this subclass (1,654 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.