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Top 20 Key Players companies in HVAC
by Highest Patent Value in the Japan in 2020

The HVAC top 20 is Discovery PatSnap’ annual ranking of the top 20 Highest Patent Value HVAC Key Players in the Japan. Discovery has identified the top key players, startups & unicorns, fast-growings, news entrants in 2020, 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).
#
Company Name
Region
Tech Topics
Total
1
Minebea Mitsumi, Inc.
Ball bearing,Electronics,DC motor,
...[+2]
Avg patent value: 1.25 M
2
Honda Motor Co., Ltd.
Automotive engineering,Manufacturing engineering,Sport utility vehicle,
...[+2]
Avg patent value: 585,277
3
Mitsubishi Electric Engineering Co., Ltd.
Avg patent value: 538,916
4
NEC Corp.
Virtualization,Big data,Network security,
...[+2]
Avg patent value: 420,000
5
Mitsubishi Kogyo KK
Avg patent value: 396,666
6
Azbil Corp.
Building automation,Software,Electronics,
...[+2]
Avg patent value: 370,000
7
Hitachi Ltd.
Elevator,Electrical equipment,Electric motor,
...[+2]
Avg patent value: 210,000
8
Nissan Motor Co., Ltd.
Truck,Public transport,Automotive engineering,
...[+2]
Avg patent value: 174,875
9
Toyota Motor Corp.
Sport utility vehicle,Mobile device,Public transport,
...[+2]
Avg patent value: 173,357
10
Valeo Thermal Systems Japan Corp.
Thermal,Automation,Manufacturing engineering,
...[+2]
Avg patent value: 153,556
11
DENSO Corp.
Automotive engineering,Industrial robot,Programmable logic controller,
...[+2]
Avg patent value: 108,372
12
Fujitsu Ltd.
Cloud computing,Enterprise software,Information technology management,
...[+2]
Avg patent value: 100,000
13
Sanden Corp.
Heat exchanger,Distribution system,Refrigeration,
...[+2]
Avg patent value: 78,000
14
Sanki Engineering Co., Ltd.
Natural gas,Construction engineering,Electronics,
...[+2]
Avg patent value: 75,000
15
TAK Co., Ltd.
Avg patent value: 70,500
16
Nihon Denso KK
Manufacturing engineering,Mechanical engineering
Avg patent value: 63,594
17
DAIKIN INDUSTRIES Ltd.
Air conditioning,Refrigeration,Mechanical engineering,
...[+2]
Avg patent value: 63,300
18
Daikin Airconditioning France SAS
Industrial engineering,Fluorochemical industry,Air conditioning,
...[+1]
Avg patent value: 63,300
19
Nippon Light Metal Co., Ltd.
Metal,Precious metal,Mining engineering,
...[+2]
Avg patent value: 60,000
20
Shimizu Kensetsu KK
Avg patent value: 51,000
Page generation time: Jun 25 2025