PlainPatent

CPC technology class · Y02

Y02B - Climate Change Mitigation Technologies Related TO Buildings

Climate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications. 34,811 US utility patents granted 2015–2025, with the leading assignees and year-by-year filing trajectory.

34,811
US patents granted
Y02
Parent CPC class
20
Active assignees
-8%
5-yr velocity

The verdict

Climate Change Mitigation Technologies Related TO Buildings ranks #50 of 670 CPC technology areas - 34,811 US patents granted since 2015, with filing down 8% over five years.

#50
of 670 CPC technology areas
34,811
US patents granted, 2015–2025
Lg
leading assignee (654)
-8%
filing velocity, last 5 yrs
Top assignee: LG Electronics Inc. (654 patents)

CPC subclass Y02B - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS - covers 34,811 US utility patents granted between 2015 and 2025 according to USPTO PatentsView records, within the broader CPC class Y02 (TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE). See our CPC classification guide for how the system works.

The competitive landscape in Y02B is shaped by 20 distinct companies actively filing in this space. LG Electronics Inc. leads with 654 patents, followed by Mitsubishi Electric Corporation at 626 grants and Panasonic Intellectual Property Management Co., Ltd. at 575.

Filing activity in Y02B is down 8% 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 Y02B innovation accelerating?

US utility-patent grants per year in Y02B, 2015–2025 - recent five years are down 8% versus 2015–2019.

1,0002,0003,0004,0005,000 20152016201720182019202020212022202320242025 1,501

Who leads Y02B?

The 12 most active assignees in CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS - wider bars mean more grants

patents

What this shows Lg is the most active filer in Y02B, holding 654 of the 34,811 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 Y02B
Rank Company Patents in Y02B
#1 LG Electronics Inc. 654
#2 Mitsubishi Electric Corporation 626
#3 Panasonic Intellectual Property Management Co., Ltd. 575
#4 Lutron Technology Company Llc 448
#5 Signify Holding B.v. 406
#6 Texas Instruments Incorporated 357
#7 Infineon Technologies Austria Ag 282
#8 Whirlpool Corporation 275
#9 Daikin Industries, Ltd. 254
#10 Rohm Co., Ltd. 227
#11 Delta Electronics, Inc. 225
#12 Philips Lighting Holding B.v. 225
#13 Semiconductor Components Industries, Llc 220
#14 Koniniklijke Philips N.v. 217
#15 Silergy Semiconductor Technology (hangzhou) Ltd. 193
#16 ABL IP Holding Llc 191
#17 FUJI Electric Co., Ltd. 188
#18 Lennox Industries Inc. 177
#19 Johnson Controls Technology Company 176
#20 Carrier Corporation 167

About This Class

CPC subclass Y02B belongs to class Y02.

34,811 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 Y02B 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 Y02B assignees by class footprint. Bubble size = patents in Y02B. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Top 14 Y02B assignees by class footprint. Bubble size = patents in Y02B. Source: USPTO PatentsView (claim depth is company-wide across all classes). Scatter plot of 14 data points (bubble-sized by third dimension). 510152025 100200300400500600700 Patents in Y02B Avg claims / patent (company-wide) LgMitsubishi ElectricPanasonic Intellectua…Lutron TechnologySignify Holding B VTexas Instruments Inc…Infineon AustriaWhirlpoolDaikin IndustriesRohmDeltaPhilips Lighting Hold…Semiconductor Compone…Koniniklijke Philips
Top 14 Y02B assignees by class footprint. Bubble size = patents in Y02B. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Frequently Asked Questions

What is CPC class Y02B?
CPC subclass Y02B covers CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS. It belongs to CPC class Y02 (TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE), with 34,811 US utility patents granted since 2015.
How many patents have been filed in Y02B?
34,811 US utility patents were granted in CPC subclass Y02B between 2015 and 2025, based on USPTO PatentsView data.
Which company holds the most patents in Y02B?
LG Electronics Inc. leads Y02B with 654 patents, making it the most active assignee in this technology area.
How is patent data for Y02B 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., Y02) is a broad technology category. Subclasses like Y02B 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.