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Top 100 Key Players companies in HVAC
by Most Patent Citation in the world in 2019

The HVAC top 100 is Discovery PatSnap’ annual ranking of the top 100 Most Patent Citation HVAC Key Players in the world. Discovery has identified the top key players, startups & unicorns, fast-growings, news entrants in 2019, ranking from differnt perspectives, including patent filing intensity, academic research capability, news media heat. The company list is generated from various data types.
Heating, ventilation, and air conditioning (HVAC) is the technology of indoor and vehicular environmental comfort. Its goal is to provide thermal comfort and acceptable indoor air quality. HVAC system design is a subdiscipline of mechanical engineering, based on the principles of thermodynamics, fluid mechanics and heat transfer. "Refrigeration" is sometimes added to the field's abbreviation, as HVAC&R or HVACR or "ventilation" is dropped, as in HACR (as in the designation of HACR-rated circuit breakers).

Key Players

Fast-growings

Startups & Unicorns

New Entrants

Ranking Year:

2022

2021

2020

2019

2018

Region:

Global

China

Japan

United States

South Korea

Germany

Canada

Switzerland

United Kingdom

Sweden

Ranking:

Most Patent Filings

Highest Patent Value

Most Patent Citation

Most Research Publications

Most Literature Citation

Most Market Reports

Most News Heat

#
Company Name
Region
Tech Topics
Total
1
Carrier Corp.
Indiana, United States
Refrigeration,Air conditioning,Mechanical engineering,
...[+2]
patent citation: 6,486
2
Google LLC
California, United States
Advertising,Enterprise software,Search engine,
...[+2]
patent citation: 5,504
3
Ademco, Inc.
NJ, US
Security alarm
patent citation: 4,709
4
Honeywell International, Inc.
North Carolina, United States
Aerospace,Electronics,Market research,
...[+2]
patent citation: 4,461
5
Johnson Controls Technology Co.
Wisconsin, United States
patent citation: 4,187
6
Trane International, Inc.
North Carolina, United States
Building management,Automation,Manufacturing engineering,
...[+2]
patent citation: 2,083
7
Emerson Electric Co.
Missouri, United States
Software,Computer hardware,Electronics,
...[+2]
patent citation: 1,841
8
EcoFactor, Inc.
California, United States
Energy management,Software as a service,Machine learning,
...[+2]
patent citation: 1,771
9
Ranco, Inc. of Delaware
US
Electronics
patent citation: 1,552
10
Schneider Electric Systems USA, Inc.
Massachusetts, United States
Software,Automation,Software as a service,
...[+2]
patent citation: 1,406
11
G.M. Srl
Vicenza, Italy
Chemical engineering
patent citation: 1,319
12
Lennox Industries, Inc.
Iowa, United States
Air conditioning,Computer hardware,Electronics,
...[+2]
patent citation: 1,311
13
West View Research LLC
CA, US
patent citation: 1,282
14
Ford Motor Co. A/S
Denmark
patent citation: 1,249
15
Russound/FMP, Inc.
New Hampshire, United States
Amplifier,Electronics
patent citation: 1,033
16
Vivint, Inc.
Utah, United States
Home automation,Internet of Things,Software,
...[+2]
patent citation: 964
17
FCA US LLC
Michigan, United States
Automotive engineering,Spark plug,Turbocharger,
...[+2]
patent citation: 888
18
YORK International Corp.
Pennsylvania, United States
Refrigeration,Manufacturing engineering,Industrial engineering,
...[+2]
patent citation: 888
19
Samsung Electronics Co., Ltd.
South Korea
Computer hardware,Semiconductor,Software,
...[+2]
patent citation: 865
20
Telkonet, Inc.
Wisconsin, United States
Energy management,Efficient energy use,Data processing,
...[+2]
patent citation: 843
21
Aptiv Plc
DUBLIN, Ireland
Electric vehicle,Automotive engineering,Software,
...[+2]
patent citation: 827
22
Delphi Technology, Inc.
Massachusetts, United States
Software,Business intelligence,Systems design,
...[+2]
patent citation: 827
23
Nest Labs, Inc.
California, United States
Thermostat,Home automation,Electronic component,
...[+2]
patent citation: 810
24
Pro1 IAQ, Inc.
Colorado, United States
HVAC
patent citation: 720
25
Visteon Global Technologies, Inc.
Michigan, United States
Automotive engineering
patent citation: 691
26
MAHLE International GmbH
Germany
Filter (aquarium),Fuel filter,Machine element,
...[+2]
patent citation: 670
27
Optimum Energy LLC
Washington, United States
Smart meter,Software,Efficient energy use,
...[+2]
patent citation: 640
28
Novar Electronics Corp.
United States
Telecommunications,Air conditioning,Control system
patent citation: 636
29
ELUTIONS, Inc.
United States
Renewable energy,Elution,Operational efficiency,
...[+1]
patent citation: 594
30
Siemens Energy & Automation, Inc.
United States
Electronics,Automation,Electric utility
patent citation: 578
31
Regal Beloit Americas, Inc.
Kentucky, United States
Electric motor,Coupling,Electrical equipment,
...[+2]
patent citation: 475
32
Autani LLC
United States
Energy management,Software,Building automation,
...[+2]
patent citation: 468
33
General Electric Co.
Massachusetts, United States
Energy management,Turbine,Electronics,
...[+2]
patent citation: 450
34
Nidec Motor Corp.
Missouri, United States
Electric motor,Electrical equipment,Electronics,
...[+2]
patent citation: 442
35
United Technologies
Connecticut, United States
Aerospace,Public transport,Building automation,
...[+2]
patent citation: 402
36
United-Tech, Inc.
Oklahoma, United States
Yeast,Telecommunications,Chemical treatment,
...[+2]
patent citation: 402
37
Glacier Bay, Inc.
California, United States
Icebox,Energy storage,Energy management,
...[+2]
patent citation: 393
38
Lagotek Corp.
Washington, United States
Software,Home automation,Enterprise software,
...[+2]
patent citation: 383
39
Mitsubishi Electric Research Laboratories, Inc.
Massachusetts, United States
Mechatronics,Computer vision,Algorithm,
...[+1]
patent citation: 376
40
Honda Motor Co., Ltd.
Tokyo, Japan
Automotive engineering,Manufacturing engineering,Sport utility vehicle,
...[+2]
patent citation: 360
41
Robertshaw Controls Co.
Virginia, United States
Electronics
patent citation: 358
42
Home EcoSystems, Inc.
Massachusetts, United States
Control system,Telecommunications
patent citation: 356
43
DIRECTV LLC
California, United States
Programming,sports equipment,Telecommunications service,
...[+2]
patent citation: 347
44
Regal-Beloit Electric Motors, Inc.
Wisconsin, United States
Electric motor,Electrical equipment,Electronics
patent citation: 346
45
Automated Logic Corp.
New Jersey, United States
Building automation,Software,Control system,
...[+2]
patent citation: 338
46
Acutherm LLC
California, United States
Temperature control
patent citation: 334
47
Kontrol Energy Group, Inc.
Ontario, Canada
Power transmission
patent citation: 329
48
Koninklijke Philips NV
Noord-Holland, Netherlands
Health care,Wellness Programs,Medical imaging,
...[+2]
patent citation: 324
49
BELIMO Holding AG
Zürich, Switzerland
Actuator,Air conditioning,Electronics,
...[+2]
patent citation: 309
50
Exceptional Innovation, Inc.
Ohio, United States
Software,Content delivery
patent citation: 298
51
Itron, Inc.
Washington, United States
Software,Computer hardware,Electronics,
...[+2]
patent citation: 294
52
Itron Inc.
Washington, United States
Smart grid,Water resource management,Electricity,
...[+2]
patent citation: 294
53
Bristol Compressors International, Inc.
Virginia, United States
Refrigeration,Reciprocating compressor,Air compressor,
...[+2]
patent citation: 285
54
AT&T, Inc.
Texas, United States
Wireless,Telecommunications,Mobile device,
...[+2]
patent citation: 282
55
AT&T Information Systems
United States
patent citation: 282
56
AT&T IPM Corp.
United States
patent citation: 282
57
Hanon Systems
South Korea
Heat exchanger,Automotive engineering,Industrial engineering,
...[+2]
patent citation: 278
58
Nailor Industries of Texas, Inc.
Texas, United States
Guidance system
patent citation: 273
59
North American Technologies, Inc.
New Jersey, United States
Coating,Industrial engineering,Varnish,
...[+2]
patent citation: 270
60
Whiterock Corp.
California, United States
patent citation: 263
61
Hyundai Motor Co., Ltd.
South Korea
Public transport,Automotive engineering,Truck,
...[+2]
patent citation: 261
62
Valeo Climate Control Corp.
Michigan, United States
Automotive engineering
patent citation: 255
63
DENSO International America, Inc.
Michigan, United States
Product category
patent citation: 254
64
Tesla, Inc.
Texas, United States
Electric vehicle,Electronics,Automotive engineering,
...[+2]
patent citation: 248
65
Leviton Manufacturing Co., Inc.
New York, United States
Energy management,Electrical equipment,Computer hardware,
...[+2]
patent citation: 245
66
3M Innovative Properties Co.
Minnesota, United States
Intellectual property,Product design
patent citation: 245
67
ZTEK Corp.
Massachusetts, United States
Hydrogen economy,Hydrogen station,Molten carbonate fuel cell,
...[+2]
patent citation: 244
68
Kimball International, Inc.
Indiana, United States
Interior design,Manufacturing services,Fixture,
...[+2]
patent citation: 240
69
Gentherm, Inc.
Michigan, United States
Steering wheel,Automotive engineering,Electronics,
...[+2]
patent citation: 238
70
Rocky Research
Alabama, United States
Energy management,Graphics processing unit,Information technology management,
...[+2]
patent citation: 238
71
General Motors Co.
Michigan, United States
Sport utility vehicle,Public transport,Enterprise software,
...[+2]
patent citation: 236
72
TonerHead, Inc.
IL, US
Industrial engineering
patent citation: 229
73
Battelle Energy Alliance LLC
Idaho, United States
Neutron
patent citation: 220
74
Kimberly-Clark Corp.
Texas, United States
Synthetic fiber,Paperboard,Fast-moving consumer goods,
...[+2]
patent citation: 219
75
Haier US Appliance Solutions, Inc.
Kentucky, United States
Electronics,Demand response,Fixture,
...[+2]
patent citation: 218
76
Kia Corp.
South Korea
Customer expectation,Automotive engineering,Public transport,
...[+2]
patent citation: 203
77
Lucid USA, Inc.
California, United States
patent citation: 202
78
Melink Corp.
Ohio, United States
Renewable energy,Ventilation (architecture),Solar energy,
...[+2]
patent citation: 197
79
Phoenix Controls Corp.
Massachusetts, United States
Airflow,Efficient energy use,Product design,
...[+2]
patent citation: 189
80
LG Electronics, Inc.
South Korea
Computer hardware,Electronics,Telecommunications,
...[+2]
patent citation: 184
81
Trans/Air Manufacturing Corp.
Pennsylvania, United States
Automotive engineering
patent citation: 184
82
Lennox Manufacturing, Inc.
IA, US
HVAC,Automation,Manufacturing engineering,
...[+2]
patent citation: 184
83
Research Products Corp.
Wisconsin, United States
Agriculture
patent citation: 182
84
Siemens Corp.
DC, US
Software,Telecommunications,Smart card security,
...[+2]
patent citation: 181
85
Clockwork IP LLC
United States
Clockwork,Ventilation (architecture),Air conditioning,
...[+1]
patent citation: 165
86
Juniper Networks, Inc.
California, United States
Systems design,Educational organization,Product marketing,
...[+2]
patent citation: 154
87
Braeburn Systems LLC
Alabama, United States
Sales management,Indoor air quality,Technical support
patent citation: 153
88
Owens Corning Intellectual Capital LLC
Ohio, United States
Intellectual capital,Chemical engineering
patent citation: 152
89
International Automotive Components Group North America, Inc.
Michigan, United States
Automotive industry,Automotive engineering
patent citation: 147
90
Emerson Motor Co.
Missouri, United States
patent citation: 141
91
ecobee, Inc.
Ontario, Canada
Thermostat,Internet of Things,Energy management,
...[+2]
patent citation: 139
92
International Business Machines Corp.
New York, United States
Software,Computer hardware,Enterprise software,
...[+2]
patent citation: 137
93
enVerid Systems, Inc.
Massachusetts, United States
Air conditioning,Energy storage,Energy management,
...[+2]
patent citation: 134
94
Teradata US, Inc.
California, United States
Software,Building automation,Enterprise software,
...[+1]
patent citation: 128
95
Modine Manufacturing Co.
Wisconsin, United States
Heat exchanger,Automotive engineering,Heat transfer,
...[+2]
patent citation: 127
96
PaceControls LLC
Pennsylvania, United States
Refrigeration,Computer hardware,Electronics
patent citation: 127
97
Computime Ltd.
United Kingdom
Information technology consulting,Systems design
patent citation: 124
98
Verdant Environmental Technologies, Inc.
Quebec, Canada
Energy management,Efficient energy use,Thermal sensing,
...[+2]
patent citation: 121
99
Pipe Restoration Technologies LLC
California, United States
Epoxy,Mining engineering,Natural resource management,
...[+2]
patent citation: 121
100
View, Inc.
California, United States
Smart glass
patent citation: 119

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