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

The HVAC top 100 is Discovery PatSnap’ annual ranking of the top 100 Most Patent Citation HVAC Key Players in the United States. 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
Honeywell International, Inc.
North Carolina, United States
Aerospace,Electronics,Market research,
...[+2]
patent citation: 4,461
4
Johnson Controls Technology Co.
Wisconsin, United States
patent citation: 4,187
5
Trane International, Inc.
North Carolina, United States
Building management,Automation,Manufacturing engineering,
...[+2]
patent citation: 2,083
6
Emerson Electric Co.
Missouri, United States
Software,Computer hardware,Electronics,
...[+2]
patent citation: 1,841
7
EcoFactor, Inc.
California, United States
Energy management,Software as a service,Machine learning,
...[+2]
patent citation: 1,771
8
Schneider Electric Systems USA, Inc.
Massachusetts, United States
Software,Automation,Software as a service,
...[+2]
patent citation: 1,406
9
Lennox Industries, Inc.
Iowa, United States
Air conditioning,Computer hardware,Electronics,
...[+2]
patent citation: 1,311
10
Russound/FMP, Inc.
New Hampshire, United States
Amplifier,Electronics
patent citation: 1,033
11
Vivint, Inc.
Utah, United States
Home automation,Internet of Things,Software,
...[+2]
patent citation: 964
12
FCA US LLC
Michigan, United States
Automotive engineering,Spark plug,Turbocharger,
...[+2]
patent citation: 888
13
YORK International Corp.
Pennsylvania, United States
Refrigeration,Manufacturing engineering,Industrial engineering,
...[+2]
patent citation: 888
14
Telkonet, Inc.
Wisconsin, United States
Energy management,Efficient energy use,Data processing,
...[+2]
patent citation: 843
15
Delphi Technology, Inc.
Massachusetts, United States
Software,Business intelligence,Systems design,
...[+2]
patent citation: 827
16
Nest Labs, Inc.
California, United States
Thermostat,Home automation,Electronic component,
...[+2]
patent citation: 810
17
Pro1 IAQ, Inc.
Colorado, United States
HVAC
patent citation: 720
18
Visteon Global Technologies, Inc.
Michigan, United States
Automotive engineering
patent citation: 691
19
Optimum Energy LLC
Washington, United States
Smart meter,Software,Efficient energy use,
...[+2]
patent citation: 640
20
Novar Electronics Corp.
United States
Telecommunications,Air conditioning,Control system
patent citation: 636
21
ELUTIONS, Inc.
United States
Renewable energy,Elution,Operational efficiency,
...[+1]
patent citation: 594
22
Siemens Energy & Automation, Inc.
United States
Electronics,Automation,Electric utility
patent citation: 578
23
Regal Beloit Americas, Inc.
Kentucky, United States
Electric motor,Coupling,Electrical equipment,
...[+2]
patent citation: 475
24
Autani LLC
United States
Energy management,Software,Building automation,
...[+2]
patent citation: 468
25
General Electric Co.
Massachusetts, United States
Energy management,Turbine,Electronics,
...[+2]
patent citation: 450
26
Nidec Motor Corp.
Missouri, United States
Electric motor,Electrical equipment,Electronics,
...[+2]
patent citation: 442
27
United Technologies
Connecticut, United States
Aerospace,Public transport,Building automation,
...[+2]
patent citation: 402
28
United-Tech, Inc.
Oklahoma, United States
Yeast,Telecommunications,Chemical treatment,
...[+2]
patent citation: 402
29
Glacier Bay, Inc.
California, United States
Icebox,Energy storage,Energy management,
...[+2]
patent citation: 393
30
Lagotek Corp.
Washington, United States
Software,Home automation,Enterprise software,
...[+2]
patent citation: 383
31
Mitsubishi Electric Research Laboratories, Inc.
Massachusetts, United States
Mechatronics,Computer vision,Algorithm,
...[+1]
patent citation: 376
32
Robertshaw Controls Co.
Virginia, United States
Electronics
patent citation: 358
33
Home EcoSystems, Inc.
Massachusetts, United States
Control system,Telecommunications
patent citation: 356
34
DIRECTV LLC
California, United States
Programming,sports equipment,Telecommunications service,
...[+2]
patent citation: 347
35
Regal-Beloit Electric Motors, Inc.
Wisconsin, United States
Electric motor,Electrical equipment,Electronics
patent citation: 346
36
Automated Logic Corp.
New Jersey, United States
Building automation,Software,Control system,
...[+2]
patent citation: 338
37
Acutherm LLC
California, United States
Temperature control
patent citation: 334
38
Exceptional Innovation, Inc.
Ohio, United States
Software,Content delivery
patent citation: 298
39
Itron, Inc.
Washington, United States
Software,Computer hardware,Electronics,
...[+2]
patent citation: 294
40
Itron Inc.
Washington, United States
Smart grid,Water resource management,Electricity,
...[+2]
patent citation: 294
41
Bristol Compressors International, Inc.
Virginia, United States
Refrigeration,Reciprocating compressor,Air compressor,
...[+2]
patent citation: 285
42
AT&T, Inc.
Texas, United States
Wireless,Telecommunications,Mobile device,
...[+2]
patent citation: 282
43
AT&T Information Systems
United States
patent citation: 282
44
AT&T IPM Corp.
United States
patent citation: 282
45
Nailor Industries of Texas, Inc.
Texas, United States
Guidance system
patent citation: 273
46
North American Technologies, Inc.
New Jersey, United States
Coating,Industrial engineering,Varnish,
...[+2]
patent citation: 270
47
Whiterock Corp.
California, United States
patent citation: 263
48
Valeo Climate Control Corp.
Michigan, United States
Automotive engineering
patent citation: 255
49
DENSO International America, Inc.
Michigan, United States
Product category
patent citation: 254
50
Tesla, Inc.
Texas, United States
Electric vehicle,Electronics,Automotive engineering,
...[+2]
patent citation: 248
51
Leviton Manufacturing Co., Inc.
New York, United States
Energy management,Electrical equipment,Computer hardware,
...[+2]
patent citation: 245
52
3M Innovative Properties Co.
Minnesota, United States
Intellectual property,Product design
patent citation: 245
53
ZTEK Corp.
Massachusetts, United States
Hydrogen economy,Hydrogen station,Molten carbonate fuel cell,
...[+2]
patent citation: 244
54
Kimball International, Inc.
Indiana, United States
Interior design,Manufacturing services,Fixture,
...[+2]
patent citation: 240
55
Gentherm, Inc.
Michigan, United States
Steering wheel,Automotive engineering,Electronics,
...[+2]
patent citation: 238
56
Rocky Research
Alabama, United States
Energy management,Graphics processing unit,Information technology management,
...[+2]
patent citation: 238
57
General Motors Co.
Michigan, United States
Sport utility vehicle,Public transport,Enterprise software,
...[+2]
patent citation: 236
58
Battelle Energy Alliance LLC
Idaho, United States
Neutron
patent citation: 220
59
Kimberly-Clark Corp.
Texas, United States
Synthetic fiber,Paperboard,Fast-moving consumer goods,
...[+2]
patent citation: 219
60
Haier US Appliance Solutions, Inc.
Kentucky, United States
Electronics,Demand response,Fixture,
...[+2]
patent citation: 218
61
Lucid USA, Inc.
California, United States
patent citation: 202
62
Melink Corp.
Ohio, United States
Renewable energy,Ventilation (architecture),Solar energy,
...[+2]
patent citation: 197
63
Phoenix Controls Corp.
Massachusetts, United States
Airflow,Efficient energy use,Product design,
...[+2]
patent citation: 189
64
Trans/Air Manufacturing Corp.
Pennsylvania, United States
Automotive engineering
patent citation: 184
65
Clockwork IP LLC
United States
Clockwork,Ventilation (architecture),Air conditioning,
...[+1]
patent citation: 165
66
Juniper Networks, Inc.
California, United States
Systems design,Educational organization,Product marketing,
...[+2]
patent citation: 154
67
Braeburn Systems LLC
Alabama, United States
Sales management,Indoor air quality,Technical support
patent citation: 153
68
Owens Corning Intellectual Capital LLC
Ohio, United States
Intellectual capital,Chemical engineering
patent citation: 152
69
International Automotive Components Group North America, Inc.
Michigan, United States
Automotive industry,Automotive engineering
patent citation: 147
70
Emerson Motor Co.
Missouri, United States
patent citation: 141
71
International Business Machines Corp.
New York, United States
Software,Computer hardware,Enterprise software,
...[+2]
patent citation: 137
72
enVerid Systems, Inc.
Massachusetts, United States
Air conditioning,Energy storage,Energy management,
...[+2]
patent citation: 134
73
Teradata US, Inc.
California, United States
Software,Building automation,Enterprise software,
...[+1]
patent citation: 128
74
Modine Manufacturing Co.
Wisconsin, United States
Heat exchanger,Automotive engineering,Heat transfer,
...[+2]
patent citation: 127
75
PaceControls LLC
Pennsylvania, United States
Refrigeration,Computer hardware,Electronics
patent citation: 127
76
Pipe Restoration Technologies LLC
California, United States
Epoxy,Mining engineering,Natural resource management,
...[+2]
patent citation: 121
77
View, Inc.
California, United States
Smart glass
patent citation: 119
78
Lutron Electronics Co., Inc.
Pennsylvania, United States
Electronics,Dimmer,Control system,
...[+2]
patent citation: 118
79
Blue Leaf I.P., Inc.
Delaware, United States
Special purpose entity
patent citation: 116
80
FTC Solar, Inc.
Texas, United States
Solar tracker
patent citation: 110
81
Indie Energy Systems Co. LLC
United States
patent citation: 107
82
Caterpillar, Inc.
Illinois, United States
Turbine,Construction engineering,Mechanical engineering,
...[+2]
patent citation: 106
83
Emerson Digital Cold Chain, Inc.
United States
Energy management,Electronics
patent citation: 102
84
ZipWall LLC
Virginia, United States
Demolition,Automation,Manufacturing engineering,
...[+2]
patent citation: 101
85
Bell Laboratories, Inc.
Wisconsin, United States
Rodenticide,Agriculture,Chemical engineering,
...[+2]
patent citation: 100
86
TRAK International, Inc.
Wisconsin, United States
Elevator,Monorail,Tractor,
...[+2]
patent citation: 100
87
Thermo King Corp.
Minnesota, United States
Truck,Supply chain management,Manufacturing engineering,
...[+2]
patent citation: 99
88
Nortek Global HVAC LLC
Missouri, United States
HVAC,Fast-moving consumer goods,Heating system,
...[+2]
patent citation: 98
89
Buffalo Filter LLC
New York, United States
Medical equipment,Health care,Smoke,
...[+2]
patent citation: 94
90
General Motors LLC
Michigan, United States
Software
patent citation: 93
91
Bergstrom, Inc.
Illinois, United States
Automotive engineering,Public transport,Climate system,
...[+2]
patent citation: 89
92
Watlow Electric Manufacturing Co.
Missouri, United States
Semiconductor,Electric heating,Electronics,
...[+2]
patent citation: 88
93
ZF Passive Safety Systems US, Inc.
Arizona, United States
Automotive engineering
patent citation: 88
94
Global Plasma Solutions, Inc.
United States
Ionization,Electronics,Refrigeration,
...[+2]
patent citation: 87
95
Ford Motor Co.
Michigan, United States
Truck,Public transport,Automotive engineering,
...[+2]
patent citation: 86
96
Day Automation Systems, Inc.
United States
patent citation: 86
97
Innovation By Design, Inc.
California, United States
patent citation: 84
98
AAON, Inc.
Oklahoma, United States
Air conditioning,Automation,Industrial engineering,
...[+2]
patent citation: 82
99
Sensata Technologies Massachusetts, Inc.
United States
Electronics
patent citation: 82
100
Musco Corp.
United States
Electronics,Bulb,Fixture
patent citation: 80

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