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Top 20 Key Players companies in Sunroom
by Most Patent Citation in the Japan in 2019

The Sunroom top 20 is Discovery PatSnap’ annual ranking of the top 20 Most Patent Citation Sunroom Key Players in the Japan. 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 sunroom, also frequently called a solarium (and sometimes a "Florida room", "garden conservatory", "garden room", "patio room", "sun parlor", "sun porch", "three season room" or "winter garden"), is a room that permits abundant daylight and views of the landscape while sheltering from adverse weather. Sunroom and solarium have the same denotation: solarium is Latin for "place of sun[light]". Solaria of various forms have been erected throughout European history. Presently, the sunroom or solarium is popular in Europe, Canada, the United States, Australia, and New Zealand. Sunrooms may feature passive solar building design to heat and illuminate them.
#
Company Name
Region
Tech Topics
Total
1
Sekisui Chemical Co., Ltd.
Synthetic rubber,Industrial engineering,Polyvinyl chloride,
...[+2]
patent citation: 32
2
Misawa Homes Co., Ltd.
Land utilization,Real estate development,Residential land
patent citation: 25
3
Sekisui House, Ltd.
Real estate development,Residential land,Urban area,
...[+2]
patent citation: 21
4
Sekisui Kasei Co., Ltd.
Civil engineering,Chemical engineering,Health care,
...[+2]
patent citation: 12
5
Nihon Funen Co. Ltd.
Ceramic
patent citation: 12
6
Showa Aluminum Corp.
Mining engineering,Precious metal,Dross,
...[+2]
patent citation: 7
7
Panasonic Holdings Corp.
Semiconductor,Industrial engineering,Electronics,
...[+2]
patent citation: 6
8
Nippon Sheet Glass Co., Ltd.
Glazing,Flat glass,Timing belt,
...[+2]
patent citation: 6
9
Matsushita Electronics Corp.
Electronics,Computer hardware,DVD player,
...[+2]
patent citation: 6
10
Kajima Corp.
Civil engineering,Construction engineering,Real estate development,
...[+2]
patent citation: 5
11
Sumitomo Forestry Co., Ltd.
Forestry,Forest product,Reforestation,
...[+2]
patent citation: 5
12
Sankyo Aluminum Industry Co., Ltd.
Metal,Natural resource management,Mining engineering
patent citation: 5
13
Shimizu Kensetsu KK
patent citation: 4
14
Nippon Light Metal Co., Ltd.
Metal,Precious metal,Mining engineering,
...[+2]
patent citation: 3
15
LIXIL Corp. /Old/
Construction engineering,Materials science
patent citation: 2
16
Matsushita Seiko Co Ltd
Automation,Manufacturing engineering,Industrial engineering,
...[+2]
patent citation: 2
17
TOSHIBA Corp.
Semiconductor,Computer hardware,Electronics,
...[+2]
patent citation: 0
18
Sumitomo Realty & Development Co., Ltd.
Land lot,Construction engineering,Property management,
...[+2]
patent citation: 0
19
Fujisash Co., Ltd.
Incineration,Curtain wall,Light-emitting diode,
...[+2]
patent citation: 0
20
Panasonic Homes Co., Ltd.
Real estate development,Landscaping,Nursing,
...[+1]
patent citation: 0
Page generation time: Jun 25 2025