Free Trial
Want deep insights into your competitors & competitive landscape? Try Patsnap Eureka!

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

The Hygrometer top 100 is Discovery PatSnap’ annual ranking of the top 100 Most Patent Citation Hygrometer 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.
A hygrometer is an instrument used to measure the amount of humidity and water vapour in the atmosphere, in soil, or in confined spaces. Humidity measurement instruments usually rely on measurements of some other quantity such as temperature, pressure, mass, a mechanical or electrical change in a substance as moisture is absorbed. By calibration and calculation, these measured quantities can lead to a measurement of humidity. Modern electronic devices use temperature of condensation (called the dew point), or changes in electrical capacitance or resistance to measure humidity differences. The first crude hygrometer was invented by the Italian Renaissance polymath Leonardo da Vinci in 1480 and a more modern version was created by Swiss polymath Johann Heinrich Lambert in 1755. Later in the year 1783, Swiss physicist and Geologist, Horace Bénédict de Saussure invented the first hygrometer using human hair to measure humidity.
#
Company Name
Region
Tech Topics
Total
1
Hitachi Ltd.
Elevator,Electrical equipment,Electric motor,
...[+2]
patent citation: 196
2
Mitsubishi Electric Engineering Co., Ltd.
patent citation: 132
3
Azbil Corp.
Building automation,Software,Electronics,
...[+2]
patent citation: 114
4
TOSHIBA Corp.
Semiconductor,Computer hardware,Electronics,
...[+2]
patent citation: 54
5
Japan Energy Corp.
Petroleum,Petroleum industry,Liquefied petroleum gas,
...[+2]
patent citation: 54
6
E.G.&G., Inc.
Financial plan,National security,Backscatter,
...[+2]
patent citation: 51
7
Keybank National Association
patent citation: 51
8
Beckman Instruments, Inc.
Medicine,Guidance system
patent citation: 48
9
TDK Corp.
Electronic component,Ceramic capacitor,Electronics,
...[+2]
patent citation: 47
10
Michell Instruments Ltd.
Kerosene,Dew point,Relative humidity,
...[+2]
patent citation: 41
11
Siemens AG
Power transmission,Electronics,Turbine,
...[+2]
patent citation: 40
12
Siemens SA
Madrid, Spain
Scientific Control,Telecommunications,Turbine,
...[+1]
patent citation: 40
13
Gww Partners LLC
patent citation: 40
14
Honeywell International, Inc.
Aerospace,Electronics,Market research,
...[+2]
patent citation: 37
15
Espec Corp.
Climate system,Computer hardware,Electronics,
...[+2]
patent citation: 36
16
Honda Motor Co., Ltd.
Automotive engineering,Manufacturing engineering,Sport utility vehicle,
...[+2]
patent citation: 32
17
NKK Corp.
Natural resource management,Mining engineering
patent citation: 30
18
General Eastern Instruments
WA, US
Control equipment,Computer hardware,Medical equipment,
...[+1]
patent citation: 29
19
General Electric Co.
Energy management,Turbine,Electronics,
...[+2]
patent citation: 28
20
Sony Group Corp.
Computer hardware,Software,Music,
...[+2]
patent citation: 28
21
Campbell Scientific, Inc.
Computer hardware,Data acquisition,Electronics,
...[+2]
patent citation: 28
22
Huadian Electric Power Research Institute Co., Ltd.
Hydropower,Energy technology
patent citation: 28
23
Samsung Electronics Co., Ltd.
Computer hardware,Semiconductor,Software,
...[+2]
patent citation: 25
24
Ophir Corp.
Laser,Automotive safety,Aerospace,
...[+2]
patent citation: 25
25
Elektrowatt AG
ZH, CH
Asset management,Impact investing
patent citation: 24
26
State Grid Corp. of China
Electric vehicle,Power grid,Total asset,
...[+2]
patent citation: 23
27
Canon, Inc.
Computer hardware,Software,Computer vision,
...[+2]
patent citation: 22
28
Toyota Central R&D Labs, Inc.
Semiconductor,Power semiconductor device,System on a chip,
...[+2]
patent citation: 22
29
Kawasaki Steel Corp.
patent citation: 22
30
Kawasaki Steel
patent citation: 22
31
Chino Corp.
Pyrometer,Control equipment,Instrumentation,
...[+2]
patent citation: 21
32
Sumitomo Metal Industries Ltd.
Metal,Semiconductor,Casting,
...[+2]
patent citation: 20
33
Fuji Electronics Co., Ltd.
Semiconductor,Microcomputer,Electronic component,
...[+2]
patent citation: 20
34
Fuji Electric FA Components & SYstems Co., Ltd.
Semiconductor,Industrial engineering,Smart grid,
...[+2]
patent citation: 20
35
ELITechGroup, Inc. (Utah)
UT, US
Water potential,Computer hardware,Electronics
patent citation: 20
36
Panasonic Holdings Corp.
Semiconductor,Industrial engineering,Electronics,
...[+2]
patent citation: 19
37
Matsushita Electronics Corp.
Electronics,Computer hardware,DVD player,
...[+2]
patent citation: 19
38
Mitsubishi Kogyo KK
patent citation: 19
39
Hitachi Plant Technologies Ltd.
Water treatment,Environmental consulting,Microfiltration,
...[+2]
patent citation: 17
40
Zhejiang Qinye Construction Engineering Group Co., Ltd.
patent citation: 17
41
Ebara Shinwa Ltd.
patent citation: 17
42
Seiko Epson Corp.
Wearable technology,Projector,Electronics,
...[+2]
patent citation: 16
43
Spectral Sciences, Inc.
Optical radiation,Radiative transfer,Spectroscopy,
...[+2]
patent citation: 16
44
Meidensha Corp.
Electrical equipment,Social infrastructure,Electronics,
...[+2]
patent citation: 15
45
Hitachi Kokusai Electric, Inc.
Semiconductor,Electronics,Thin film,
...[+2]
patent citation: 15
46
JX Nippon Mining & Metals Corp.
Non-ferrous metal,Cathode material,Mining engineering,
...[+2]
patent citation: 15
47
Air Products & Chemicals, Inc.
Industrial gas,Chemical engineering,Helium,
...[+2]
patent citation: 14
48
DAIKIN INDUSTRIES Ltd.
Air conditioning,Refrigeration,Mechanical engineering,
...[+2]
patent citation: 13
49
Sharp Corp.
Computer hardware,Electronics,Telecommunications,
...[+2]
patent citation: 13
50
Chugai Pharmaceutical Co., Ltd.
Drug,Clinical trial,Health care,
...[+2]
patent citation: 13
51
Sunbeam Products, Inc.
Air purifier,Air pollution,Indoor air quality,
...[+2]
patent citation: 13
52
The Holmes Group, Inc.
Air purifier,Electronics,Humidifiers,
...[+2]
patent citation: 13
53
Daikin Airconditioning France SAS
Industrial engineering,Fluorochemical industry,Air conditioning,
...[+1]
patent citation: 13
54
Hitachi High-Tech Science Corp.
Computer hardware,Electronics,Nanometrology,
...[+2]
patent citation: 13
55
General Time Corp.
GA, US
Alarm clock,Medical equipment,Barometer
patent citation: 13
56
Spare IPG 20 Ltd.
DR, GB
patent citation: 13
57
NIPPON STEEL Stainless Steel Corp.
Mill,Metal,Mining engineering,
...[+1]
patent citation: 12
58
Southwest Sciences, Inc.
Magnetometer,Atmospheric chemistry,Avionics,
...[+2]
patent citation: 12
59
National Research Development Corp.
United Kingdom
patent citation: 12
60
Nitto Denko Corp.
Semiconductor,Product design,Adhesive,
...[+2]
patent citation: 11
61
Tomoegawa Co., Ltd.
Materials processing,Industrial engineering,Nonwoven fabric,
...[+2]
patent citation: 11
62
Thales Group
Aerospace,Public transport,Security market,
...[+2]
patent citation: 11
63
Nihon Denso KK
Manufacturing engineering,Mechanical engineering
patent citation: 11
64
Thales International SAS
Aerospace,Information system,National security,
...[+1]
patent citation: 11
65
BBC Brown Boveri Ltd.
Switzerland
patent citation: 10
66
Guangzhou Aosong Electronics Co. Ltd.
Semiconductor,Capacitor,Electron,
...[+2]
patent citation: 10
67
MEECO, Inc.
PA, US
Computer hardware,Electronics,Semiconductor,
...[+2]
patent citation: 10
68
Ricoh Co., Ltd.
Digital media,Data visualization,Thermal paper,
...[+2]
patent citation: 9
69
FANUC Corp.
Robotics,Robot,Automation,
...[+2]
patent citation: 9
70
Carl Schenck AG
Diagnostic system,Automation
patent citation: 9
71
LI-COR, Inc.
Reagent,Molecular diagnostics,Health care,
...[+2]
patent citation: 9
72
A. O. Smith Corp.
Water treatment,Renewable energy,Efficient energy use,
...[+2]
patent citation: 8
73
Sumitomo Pharma Co., Ltd.
Medicine,Health care,Clinical trial,
...[+2]
patent citation: 8
74
Chongqing Fuling Zhacai Group Co., Ltd.
Food processing,Food industry,Seasoning,
...[+2]
patent citation: 8
75
The Dow Chemical Co.
Coating,Agriculture,Chemical engineering,
...[+2]
patent citation: 8
76
Fuji Electric Systems Co., Ltd.
Automation,Manufacturing engineering,Industrial engineering,
...[+2]
patent citation: 8
77
Sumitomo Pharmaceuticals Co., Ltd.
Botanical drug,Herb
patent citation: 8
78
Nippon Telegraph & Telephone Corp.
Telecommunications,Cloud database,Data center,
...[+2]
patent citation: 7
79
Iseki & Co., Ltd.
Combine harvester,Cutlery,Manufacturing engineering,
...[+2]
patent citation: 7
80
China Ordnance Industry Grp Air Ammunition Institute Co., Ltd.
Mechanical engineering,Manufacturing engineering
patent citation: 7
81
Shanghai Research Institute of Chemical Industry Co. Ltd.
Biology,Chemistry,Oceanography,
...[+2]
patent citation: 7
82
Hazamagumi KK
patent citation: 7
83
Shanghai Nuclear Engineering Research & Design Institute
Nuclear engineering
patent citation: 7
84
JGC Plantech Co., Ltd.
AI, JP
patent citation: 7
85
Kajima Corp.
Civil engineering,Construction engineering,Real estate development,
...[+2]
patent citation: 6
86
TAKUMA CO., LTD.
Manufacturing engineering,Agricultural waste,Boiler (power generation),
...[+2]
patent citation: 6
87
Messer Group GmbH
Industrial gas,Nitrogen,Argon,
...[+2]
patent citation: 6
88
Kanebo Ltd.
Textile,Cosmetics,Food products,
...[+2]
patent citation: 6
89
Fujita Corp.
Land utilization,Demolition,Construction engineering,
...[+2]
patent citation: 6
90
Vapor
Electronic cigarette,Cannabis,Product design,
...[+2]
patent citation: 6
91
China Sinogy Electric Engineering Co., Ltd.
Construction engineering,Project management
patent citation: 6
92
Ingenera SA
Switzerland
Deep learning,Farming industry,Livestock
patent citation: 6
93
Ohbayashi Corp.
Construction engineering
patent citation: 6
94
Powerchina Huadong Engineering Corp. Ltd.
Industrial engineering,Offshore wind power,Wind power,
...[+1]
patent citation: 6
95
LG Electronics, Inc.
Computer hardware,Electronics,Telecommunications,
...[+2]
patent citation: 5
96
Ebara Corp.
Vacuum pump,Manufacturing engineering,Turbine,
...[+2]
patent citation: 5
97
Sumitomo Metal Mining Co., Ltd.
Nickel,Mining engineering,Natural resource management,
...[+2]
patent citation: 5
98
ShinMaywa Industries, Ltd.
Aerospace,Jet bridge,National security,
...[+2]
patent citation: 5
99
Nohmi Bosai Ltd.
Fire protection,Automation,Manufacturing engineering,
...[+2]
patent citation: 5
100
Nordica SpA
Veneto, Italy
patent citation: 5
Page generation time: Jul 06 2025