With the analysis among 1,271 patents, we discovered top 481 key players by total patent application. PetroChina Co., Ltd., China Petroleum & Chemical Corp., Tianjin Development Zone Erjiayi Milan Environmental Protection Technology Co., Ltd. are dominant in this area. They take 3.07% of the total patent filing.
Beijing Shi, China
Patent: 16
Beijing Shi, China
Patent: 12
Tianjin Shi, China
Patent: 11
Beijing Shi, China
Patent: 8
Guangdong Sheng, China
Patent: 6
CITY OF ARAGON, Spain
Patent: 6
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With the analysis among related 541 patents applied in the last 5 years. We discover 445 most active companies in this area. The fast-growing PetroChina Co., Ltd., Xi'an Jiaotong University, Tianjin University take 2.40% of patent filing during this period.
Beijing Shi, China
Patent: 5
Shaanxi Sheng, China
Patent: 4
Tianjin Shi, China
Patent: 4
Beijing Shi, China
Patent: 4
Guangdong Sheng, China
Patent: 4
Sichuan Sheng, China
Patent: 3
Chongqing Shi, China
Patent: 3
Jiangsu Sheng, China
Patent: 3
Guangdong Sheng, China
Patent: 3
Zhejiang Sheng, China
Patent: 3
With the analysis among related 541 patents in last 5 years, we discover 400 new entrants. Xi'an Jiaotong University, Chengdu Cnbm Photoelectric Materials Co Ltd., Chongqing Yanyu Energy Saving Technology Co., Ltd. are the most active new entrants in this area.
Shaanxi Sheng, China
Patent: 4
Sichuan Sheng, China
Patent: 3
Chongqing Shi, China
Patent: 3
Hubei Sheng, China
Patent: 2
Jiangsu Sheng, China
Patent: 2
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Patent: 2
Dencare (Chongqing) Oral Care Co., Ltd.
Chongqing Shi, China
Patent: 2
Zhejiang Sheng, China
Patent: 2
Shandong Sheng, China
Patent: 2
Hubei Sheng, China
Patent: 2
With the analysis among 353 patents, we discovered top 138 universities and scientific research institutions by total patent application. Southwest Petroleum University, South China University of Technology, Guangdong University of Technology are dominant in this area. They take 7.08% of the total patent filing.
Sichuan Sheng, China
Patent: 8
Guangdong Sheng, China
Patent: 6
Guangdong Sheng, China
Patent: 6
Tianjin Shi, China
Patent: 6
Shandong Sheng, China
Patent: 5
Shanghai Shi, China
Patent: 5
Hunan Sheng, China
Patent: 5
Sichuan Sheng, China
Patent: 5
Beijing Shi, China
Patent: 5
Zhejiang Sheng, China
Patent: 5